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Alert Archives for All California Counties
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230 total alerts issued on this day

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Spacer GifLast Update:April 21, 2026 - 7:00 am PDT
El Dorado County   4 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
WWY.gif   WINTER WEATHER ADVISORY   (3 updates)
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 20 10:41 am Expired: Apr 21 5:00 pm Duration: 1 day   6 hrs   19 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 21 12:11 am Expired: Apr 22 5:00 pm Duration: 1 day   16 hrs   49 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 21 1:46 pm Expired: Apr 22 5:00 pm Duration: 1 day   3 hrs   14 mins  
SRA.gif   WINTER STORM WATCH  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 20 10:41 am Expired: Apr 20 10:56 am Duration: 0 hrs   15 mins  
FLS.gif   FLOOD ADVISORY  
  Areas affected: Amador, CA; Calaveras, CA; El Dorado, CA; Nevada, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Sutter, CA; Tuolumne, CA; Yolo, CA
Effective: Apr 21 1:28 pm Expired: Apr 21 7:30 pm Duration: 6 hrs   02 mins  
Placer County   4 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
WWY.gif   WINTER WEATHER ADVISORY   (3 updates)
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 20 10:41 am Expired: Apr 21 5:00 pm Duration: 1 day   6 hrs   19 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 21 12:11 am Expired: Apr 22 5:00 pm Duration: 1 day   16 hrs   49 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 21 1:46 pm Expired: Apr 22 5:00 pm Duration: 1 day   3 hrs   14 mins  
SRA.gif   WINTER STORM WATCH  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 20 10:41 am Expired: Apr 20 10:56 am Duration: 0 hrs   15 mins  
FLS.gif   FLOOD ADVISORY  
  Areas affected: Amador, CA; Calaveras, CA; El Dorado, CA; Nevada, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Sutter, CA; Tuolumne, CA; Yolo, CA
Effective: Apr 21 1:28 pm Expired: Apr 21 7:30 pm Duration: 6 hrs   02 mins  
Nevada County   4 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
WWY.gif   WINTER WEATHER ADVISORY   (3 updates)
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 20 10:41 am Expired: Apr 21 5:00 pm Duration: 1 day   6 hrs   19 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 21 12:11 am Expired: Apr 22 5:00 pm Duration: 1 day   16 hrs   49 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 21 1:46 pm Expired: Apr 22 5:00 pm Duration: 1 day   3 hrs   14 mins  
SRA.gif   WINTER STORM WATCH  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 20 10:41 am Expired: Apr 20 10:56 am Duration: 0 hrs   15 mins  
FLS.gif   FLOOD ADVISORY  
  Areas affected: Amador, CA; Calaveras, CA; El Dorado, CA; Nevada, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Sutter, CA; Tuolumne, CA; Yolo, CA
Effective: Apr 21 1:28 pm Expired: Apr 21 7:30 pm Duration: 6 hrs   02 mins  
Amador County   2 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
FLS.gif   FLOOD ADVISORY  
  Areas affected: Amador, CA; Calaveras, CA; El Dorado, CA; Nevada, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Sutter, CA; Tuolumne, CA; Yolo, CA
Effective: Apr 21 1:28 pm Expired: Apr 21 7:30 pm Duration: 6 hrs   02 mins  
Alpine County   3 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
WWY.gif   WINTER WEATHER ADVISORY   (3 updates)
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 20 10:41 am Expired: Apr 21 5:00 pm Duration: 1 day   6 hrs   19 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 21 12:11 am Expired: Apr 22 5:00 pm Duration: 1 day   16 hrs   49 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 21 1:46 pm Expired: Apr 22 5:00 pm Duration: 1 day   3 hrs   14 mins  
SRA.gif   WINTER STORM WATCH  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 20 10:41 am Expired: Apr 20 10:56 am Duration: 0 hrs   15 mins  
Butte County   3 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
SVR.gif   SEVERE THUNDERSTORM WARNING   (2 updates)
SVRSTO
  Areas affected: Butte, CA; Glenn, CA; Tehama, CA
Effective: Apr 21 3:56 pm Expired: Apr 21 4:45 pm Duration: 0 hrs   49 mins  
At 413 PM PDT, a severe thunderstorm was located over Orland, moving
  Areas affected: Butte, CA; Glenn, CA; Tehama, CA
Effective: Apr 21 4:13 pm Expired: Apr 21 4:45 pm Duration: 0 hrs   32 mins  
SPS.gif   SPECIAL WEATHER STATEMENT   (2 updates)
At 440 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Northern Sacramento Valley in Tehama County; Central Glenn County Including Interstate 5; Eastern Glenn County; Butte County Below 1000 ft
Effective: Apr 21 4:41 pm Expired: Apr 21 5:15 pm Duration: 0 hrs   34 mins  
At 511 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Sierra Nevada of Tehama-Butte-Plumas Counties Between 1000-3000 ft; Northern Sacramento Valley in Tehama County; Eastern Glenn County; Butte County Below 1000 ft
Effective: Apr 21 5:12 pm Expired: Apr 21 6:00 pm Duration: 0 hrs   48 mins  
Lassen County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
Shasta County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
Sierra County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
Tehama County   3 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
SVR.gif   SEVERE THUNDERSTORM WARNING   (4 updates)
SVRSTO
  Areas affected: Tehama, CA
Effective: Apr 21 3:20 pm Expired: Apr 21 4:00 pm Duration: 0 hrs   40 mins  
At 341 PM PDT, a severe thunderstorm was located over Paskenta, or 18
  Areas affected: Tehama, CA
Effective: Apr 21 3:41 pm Expired: Apr 21 4:00 pm Duration: 0 hrs   19 mins  
SVRSTO
  Areas affected: Butte, CA; Glenn, CA; Tehama, CA
Effective: Apr 21 3:56 pm Expired: Apr 21 4:45 pm Duration: 0 hrs   49 mins  
At 413 PM PDT, a severe thunderstorm was located over Orland, moving
  Areas affected: Butte, CA; Glenn, CA; Tehama, CA
Effective: Apr 21 4:13 pm Expired: Apr 21 4:45 pm Duration: 0 hrs   32 mins  
SPS.gif   SPECIAL WEATHER STATEMENT   (2 updates)
At 440 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Northern Sacramento Valley in Tehama County; Central Glenn County Including Interstate 5; Eastern Glenn County; Butte County Below 1000 ft
Effective: Apr 21 4:41 pm Expired: Apr 21 5:15 pm Duration: 0 hrs   34 mins  
At 511 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Sierra Nevada of Tehama-Butte-Plumas Counties Between 1000-3000 ft; Northern Sacramento Valley in Tehama County; Eastern Glenn County; Butte County Below 1000 ft
Effective: Apr 21 5:12 pm Expired: Apr 21 6:00 pm Duration: 0 hrs   48 mins  
Tuolumne County   2 alerts
WSW.gif   WINTER STORM WARNING   (5 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 20 5:33 pm Expired: Apr 21 2:00 am Duration: 8 hrs   27 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 21 12:38 am Expired: Apr 21 11:00 am Duration: 10 hrs   22 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 21 10:45 am Expired: Apr 21 7:00 pm Duration: 8 hrs   15 mins  
FLS.gif   FLOOD ADVISORY  
  Areas affected: Amador, CA; Calaveras, CA; El Dorado, CA; Nevada, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Sutter, CA; Tuolumne, CA; Yolo, CA
Effective: Apr 21 1:28 pm Expired: Apr 21 7:30 pm Duration: 6 hrs   02 mins  
Fresno County   5 alerts
WSW.gif   WINTER STORM WARNING   (3 updates)
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 20 5:33 pm Expired: Apr 21 2:00 am Duration: 8 hrs   27 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 21 12:38 am Expired: Apr 21 11:00 am Duration: 10 hrs   22 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 21 10:45 am Expired: Apr 21 7:00 pm Duration: 8 hrs   15 mins  
SPS.gif   SPECIAL WEATHER STATEMENT   (9 updates)
At 1132 AM PDT, Doppler radar was tracking a strong thunderstorm 13
  Areas affected: West Side Mountains north of 198; Los Banos - Dos Palos; Merced - Madera - Mendota
Effective: Apr 21 11:33 am Expired: Apr 21 12:00 pm Duration: 0 hrs   27 mins  
At 1216 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: West Side Mountains north of 198; Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:16 pm Expired: Apr 21 12:45 pm Duration: 0 hrs   29 mins  
At 1241 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:41 pm Expired: Apr 21 1:15 pm Duration: 0 hrs   34 mins  
At 104 PM PDT, Doppler radar was tracking a strong thunderstorm 7
  Areas affected: West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Hanford - Corcoran - Lemoore
Effective: Apr 21 1:04 pm Expired: Apr 21 1:30 pm Duration: 0 hrs   26 mins  
At 147 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; Caruthers - San Joaquin - Selma; Fresno-Clovis
Effective: Apr 21 1:48 pm Expired: Apr 21 2:15 pm Duration: 0 hrs   27 mins  
At 310 PM PDT, Doppler radar was tracking a strong thunderstorm 9
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota
Effective: Apr 21 3:10 pm Expired: Apr 21 3:45 pm Duration: 0 hrs   35 mins  
At 354 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Planada - Le Grand - Snelling; Fresno-Clovis; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills
Effective: Apr 21 3:54 pm Expired: Apr 21 4:30 pm Duration: 0 hrs   36 mins  
At 410 PM PDT, Doppler radar was tracking a strong thunderstorm over
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 4:10 pm Expired: Apr 21 4:45 pm Duration: 0 hrs   35 mins  
At 512 PM PDT, Doppler radar was tracking a strong thunderstorm 7
  Areas affected: Planada - Le Grand - Snelling; Fresno-Clovis; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills; Fresno-Tulare Lower Sierra; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge
Effective: Apr 21 5:12 pm Expired: Apr 21 5:45 pm Duration: 0 hrs   33 mins  
FLS.gif   FLOOD ADVISORY  
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 1:56 pm Expired: Apr 21 3:30 pm Duration: 1 hr   34 mins  
TOR.gif   TORNADO WARNING   (2 updates)
At 230 PM PDT, a confirmed tornado was located near Biola, or 8 miles
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 2:30 pm Expired: Apr 21 2:45 pm Duration: 0 hrs   15 mins  
TORHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 2:37 pm Expired: Apr 21 3:00 pm Duration: 0 hrs   23 mins  
SVR.gif   SEVERE THUNDERSTORM WARNING   (9 updates)
SVRHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 2:54 pm Expired: Apr 21 3:30 pm Duration: 0 hrs   36 mins  
At 309 PM PDT, a severe thunderstorm was located over Bonadelle
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 3:09 pm Expired: Apr 21 3:30 pm Duration: 0 hrs   21 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA; Merced, CA
Effective: Apr 21 3:19 pm Expired: Apr 21 3:45 pm Duration: 0 hrs   26 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA; Merced, CA
Effective: Apr 21 3:43 pm Expired: Apr 21 4:15 pm Duration: 0 hrs   32 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 4:05 pm Expired: Apr 21 4:30 pm Duration: 0 hrs   25 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 4:24 pm Expired: Apr 21 5:00 pm Duration: 0 hrs   36 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 4:30 pm Expired: Apr 21 5:00 pm Duration: 0 hrs   30 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 4:54 pm Expired: Apr 21 5:30 pm Duration: 0 hrs   36 mins  
SVRHNX
  Areas affected: Fresno, CA; Tulare, CA
Effective: Apr 21 5:11 pm Expired: Apr 21 5:45 pm Duration: 0 hrs   34 mins  
Madera County   5 alerts
WSW.gif   WINTER STORM WARNING   (3 updates)
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 20 5:33 pm Expired: Apr 21 2:00 am Duration: 8 hrs   27 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 21 12:38 am Expired: Apr 21 11:00 am Duration: 10 hrs   22 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 21 10:45 am Expired: Apr 21 7:00 pm Duration: 8 hrs   15 mins  
SPS.gif   SPECIAL WEATHER STATEMENT   (8 updates)
At 1132 AM PDT, Doppler radar was tracking a strong thunderstorm 13
  Areas affected: West Side Mountains north of 198; Los Banos - Dos Palos; Merced - Madera - Mendota
Effective: Apr 21 11:33 am Expired: Apr 21 12:00 pm Duration: 0 hrs   27 mins  
At 1216 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: West Side Mountains north of 198; Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:16 pm Expired: Apr 21 12:45 pm Duration: 0 hrs   29 mins  
At 1241 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:41 pm Expired: Apr 21 1:15 pm Duration: 0 hrs   34 mins  
At 147 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; Caruthers - San Joaquin - Selma; Fresno-Clovis
Effective: Apr 21 1:48 pm Expired: Apr 21 2:15 pm Duration: 0 hrs   27 mins  
At 310 PM PDT, Doppler radar was tracking a strong thunderstorm 9
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota
Effective: Apr 21 3:10 pm Expired: Apr 21 3:45 pm Duration: 0 hrs   35 mins  
At 354 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Planada - Le Grand - Snelling; Fresno-Clovis; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills
Effective: Apr 21 3:54 pm Expired: Apr 21 4:30 pm Duration: 0 hrs   36 mins  
At 410 PM PDT, Doppler radar was tracking a strong thunderstorm over
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 4:10 pm Expired: Apr 21 4:45 pm Duration: 0 hrs   35 mins  
At 512 PM PDT, Doppler radar was tracking a strong thunderstorm 7
  Areas affected: Planada - Le Grand - Snelling; Fresno-Clovis; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills; Fresno-Tulare Lower Sierra; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge
Effective: Apr 21 5:12 pm Expired: Apr 21 5:45 pm Duration: 0 hrs   33 mins  
FLS.gif   FLOOD ADVISORY  
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 1:56 pm Expired: Apr 21 3:30 pm Duration: 1 hr   34 mins  
TOR.gif   TORNADO WARNING   (2 updates)
At 230 PM PDT, a confirmed tornado was located near Biola, or 8 miles
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 2:30 pm Expired: Apr 21 2:45 pm Duration: 0 hrs   15 mins  
TORHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 2:37 pm Expired: Apr 21 3:00 pm Duration: 0 hrs   23 mins  
SVR.gif   SEVERE THUNDERSTORM WARNING   (10 updates)
SVRHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 2:54 pm Expired: Apr 21 3:30 pm Duration: 0 hrs   36 mins  
At 309 PM PDT, a severe thunderstorm was located over Bonadelle
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 3:09 pm Expired: Apr 21 3:30 pm Duration: 0 hrs   21 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA; Merced, CA
Effective: Apr 21 3:19 pm Expired: Apr 21 3:45 pm Duration: 0 hrs   26 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA; Merced, CA
Effective: Apr 21 3:43 pm Expired: Apr 21 4:15 pm Duration: 0 hrs   32 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 4:05 pm Expired: Apr 21 4:30 pm Duration: 0 hrs   25 mins  
SVRHNX
  Areas affected: Madera, CA
Effective: Apr 21 4:09 pm Expired: Apr 21 4:45 pm Duration: 0 hrs   36 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 4:24 pm Expired: Apr 21 5:00 pm Duration: 0 hrs   36 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 4:30 pm Expired: Apr 21 5:00 pm Duration: 0 hrs   30 mins  
SVRHNX
  Areas affected: Madera, CA
Effective: Apr 21 4:41 pm Expired: Apr 21 5:15 pm Duration: 0 hrs   34 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA
Effective: Apr 21 4:54 pm Expired: Apr 21 5:30 pm Duration: 0 hrs   36 mins  
Mariposa County   2 alerts
WSW.gif   WINTER STORM WARNING   (3 updates)
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 20 5:33 pm Expired: Apr 21 2:00 am Duration: 8 hrs   27 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 21 12:38 am Expired: Apr 21 11:00 am Duration: 10 hrs   22 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 21 10:45 am Expired: Apr 21 7:00 pm Duration: 8 hrs   15 mins  
SPS.gif   SPECIAL WEATHER STATEMENT   (6 updates)
At 1216 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: West Side Mountains north of 198; Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:16 pm Expired: Apr 21 12:45 pm Duration: 0 hrs   29 mins  
At 1241 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:41 pm Expired: Apr 21 1:15 pm Duration: 0 hrs   34 mins  
At 147 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; Caruthers - San Joaquin - Selma; Fresno-Clovis
Effective: Apr 21 1:48 pm Expired: Apr 21 2:15 pm Duration: 0 hrs   27 mins  
At 354 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Planada - Le Grand - Snelling; Fresno-Clovis; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills
Effective: Apr 21 3:54 pm Expired: Apr 21 4:30 pm Duration: 0 hrs   36 mins  
At 410 PM PDT, Doppler radar was tracking a strong thunderstorm over
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 4:10 pm Expired: Apr 21 4:45 pm Duration: 0 hrs   35 mins  
At 512 PM PDT, Doppler radar was tracking a strong thunderstorm 7
  Areas affected: Planada - Le Grand - Snelling; Fresno-Clovis; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills; Fresno-Tulare Lower Sierra; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge
Effective: Apr 21 5:12 pm Expired: Apr 21 5:45 pm Duration: 0 hrs   33 mins  
Tulare County   3 alerts
WSW.gif   WINTER STORM WARNING   (3 updates)
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 20 5:33 pm Expired: Apr 21 2:00 am Duration: 8 hrs   27 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 21 12:38 am Expired: Apr 21 11:00 am Duration: 10 hrs   22 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP
Effective: Apr 21 10:45 am Expired: Apr 21 7:00 pm Duration: 8 hrs   15 mins  
SPS.gif   SPECIAL WEATHER STATEMENT   (6 updates)
At 1216 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: West Side Mountains north of 198; Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:16 pm Expired: Apr 21 12:45 pm Duration: 0 hrs   29 mins  
At 1241 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:41 pm Expired: Apr 21 1:15 pm Duration: 0 hrs   34 mins  
At 104 PM PDT, Doppler radar was tracking a strong thunderstorm 7
  Areas affected: West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Hanford - Corcoran - Lemoore
Effective: Apr 21 1:04 pm Expired: Apr 21 1:30 pm Duration: 0 hrs   26 mins  
At 147 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; Caruthers - San Joaquin - Selma; Fresno-Clovis
Effective: Apr 21 1:48 pm Expired: Apr 21 2:15 pm Duration: 0 hrs   27 mins  
At 354 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Planada - Le Grand - Snelling; Fresno-Clovis; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills
Effective: Apr 21 3:54 pm Expired: Apr 21 4:30 pm Duration: 0 hrs   36 mins  
At 512 PM PDT, Doppler radar was tracking a strong thunderstorm 7
  Areas affected: Planada - Le Grand - Snelling; Fresno-Clovis; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills; Fresno-Tulare Lower Sierra; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge
Effective: Apr 21 5:12 pm Expired: Apr 21 5:45 pm Duration: 0 hrs   33 mins  
SVR.gif   SEVERE THUNDERSTORM WARNING  
SVRHNX
  Areas affected: Fresno, CA; Tulare, CA
Effective: Apr 21 5:11 pm Expired: Apr 21 5:45 pm Duration: 0 hrs   34 mins  
Imperial County   2 alerts
WIY.gif   WIND ADVISORY   (3 updates)
  Areas affected: Imperial County Southwest
Effective: Apr 20 9:53 pm Expired: Apr 21 4:00 pm Duration: 18 hrs   07 mins  
  Areas affected: Imperial County Southwest
Effective: Apr 21 12:18 am Expired: Apr 21 2:00 pm Duration: 13 hrs   42 mins  
  Areas affected: Imperial County Southwest
Effective: Apr 21 1:34 pm Expired: Apr 22 8:00 am Duration: 18 hrs   26 mins  
SPS.gif   AIR QUALITY ALERT  
  Areas affected: Imperial County Southwest; Imperial County West; Imperial Valley
Effective: Apr 20 9:40 am Expired: Apr 22 12:00 am Duration: 1 day   14 hrs   20 mins  
Kern County
WIY.gif   WIND ADVISORY   (6 updates)
  Areas affected: Mojave Desert Slopes
Effective: Apr 20 8:32 pm Expired: Apr 21 5:00 am Duration: 8 hrs   28 mins  
  Areas affected: Indian Wells Valley; Mojave Desert
Effective: Apr 20 8:32 pm Expired: Apr 21 5:00 am Duration: 8 hrs   28 mins  
  Areas affected: Mojave Desert Slopes
Effective: Apr 21 4:39 am Expired: Apr 21 2:00 pm Duration: 9 hrs   21 mins  
  Areas affected: Indian Wells Valley; Mojave Desert
Effective: Apr 21 4:39 am Expired: Apr 21 2:00 pm Duration: 9 hrs   21 mins  
  Areas affected: Mojave Desert Slopes
Effective: Apr 21 11:14 am Expired: Apr 21 10:00 pm Duration: 10 hrs   46 mins  
  Areas affected: Indian Wells Valley; Mojave Desert
Effective: Apr 21 11:14 am Expired: Apr 21 10:00 pm Duration: 10 hrs   46 mins  
Mono County   2 alerts
SRA.gif   WINTER STORM WATCH  
  Areas affected: Mono
Effective: Apr 20 10:41 am Expired: Apr 20 10:56 am Duration: 0 hrs   15 mins  
WWY.gif   WINTER WEATHER ADVISORY   (3 updates)
  Areas affected: Mono
Effective: Apr 20 10:41 am Expired: Apr 21 5:00 pm Duration: 1 day   6 hrs   19 mins  
  Areas affected: Mono
Effective: Apr 21 12:11 am Expired: Apr 22 5:00 pm Duration: 1 day   16 hrs   49 mins  
  Areas affected: Mono
Effective: Apr 21 1:46 pm Expired: Apr 22 5:00 pm Duration: 1 day   3 hrs   14 mins  
Riverside County   2 alerts
WIY.gif   WIND ADVISORY   (6 updates)
  Areas affected: Riverside County Mountains; San Diego County Mountains
Effective: Apr 20 9:39 pm Expired: Apr 21 6:15 am Duration: 8 hrs   36 mins  
  Areas affected: San Gorgonio Pass Near Banning
Effective: Apr 20 9:39 pm Expired: Apr 21 6:15 am Duration: 8 hrs   36 mins  
  Areas affected: San Gorgonio Pass Near Banning
Effective: Apr 21 3:55 am Expired: Apr 21 3:30 pm Duration: 11 hrs   35 mins  
  Areas affected: Riverside County Mountains; San Diego County Mountains
Effective: Apr 21 3:55 am Expired: Apr 21 3:30 pm Duration: 11 hrs   35 mins  
  Areas affected: San Gorgonio Pass Near Banning
Effective: Apr 21 10:30 am Expired: Apr 21 10:15 pm Duration: 11 hrs   45 mins  
  Areas affected: Riverside County Mountains; San Diego County Mountains
Effective: Apr 21 10:30 am Expired: Apr 21 10:15 pm Duration: 11 hrs   45 mins  
SPS.gif   AIR QUALITY ALERT  
  Areas affected: Coachella Valley; San Gorgonio Pass Near Banning
Effective: Apr 21 12:26 pm Expired: Apr 23 12:15 am Duration: 1 day   11 hrs   49 mins  
San Diego County
WIY.gif   WIND ADVISORY   (6 updates)
  Areas affected: Riverside County Mountains; San Diego County Mountains
Effective: Apr 20 9:39 pm Expired: Apr 21 6:15 am Duration: 8 hrs   36 mins  
  Areas affected: Apple and Lucerne Valleys; San Diego County Deserts
Effective: Apr 20 9:39 pm Expired: Apr 21 6:15 am Duration: 8 hrs   36 mins  
  Areas affected: Riverside County Mountains; San Diego County Mountains
Effective: Apr 21 3:55 am Expired: Apr 21 3:30 pm Duration: 11 hrs   35 mins  
  Areas affected: Apple and Lucerne Valleys; San Diego County Deserts
Effective: Apr 21 3:55 am Expired: Apr 21 3:30 pm Duration: 11 hrs   35 mins  
  Areas affected: Apple and Lucerne Valleys; San Diego County Deserts
Effective: Apr 21 10:30 am Expired: Apr 21 10:15 pm Duration: 11 hrs   45 mins  
  Areas affected: Riverside County Mountains; San Diego County Mountains
Effective: Apr 21 10:30 am Expired: Apr 21 10:15 pm Duration: 11 hrs   45 mins  
San Bernardino County
WIY.gif   WIND ADVISORY   (12 updates)
  Areas affected: Apple and Lucerne Valleys; San Diego County Deserts
Effective: Apr 20 9:39 pm Expired: Apr 21 6:15 am Duration: 8 hrs   36 mins  
  Areas affected: San Bernardino County Mountains
Effective: Apr 20 9:39 pm Expired: Apr 21 6:15 am Duration: 8 hrs   36 mins  
  Areas affected: Northwest Plateau; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Western Mojave Desert; Morongo Basin; Northeast Clark County; Western Clark and Southern Nye County; Sheep Range; Spring Mountains-Red Rock Canyon; Las Vegas Valley; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side
Effective: Apr 20 10:32 am Expired: Apr 21 5:15 am Duration: 18 hrs   43 mins  
  Areas affected: Joshua Tree NP West
Effective: Apr 21 12:18 am Expired: Apr 21 2:00 pm Duration: 13 hrs   42 mins  
  Areas affected: Northwest Plateau; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Western Mojave Desert; Morongo Basin; Northeast Clark County; Western Clark and Southern Nye County; Sheep Range; Spring Mountains-Red Rock Canyon; Las Vegas Valley; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side
Effective: Apr 21 12:34 am Expired: Apr 21 9:45 am Duration: 9 hrs   11 mins  
  Areas affected: San Bernardino County Mountains
Effective: Apr 21 3:55 am Expired: Apr 21 3:30 pm Duration: 11 hrs   35 mins  
  Areas affected: Apple and Lucerne Valleys; San Diego County Deserts
Effective: Apr 21 3:55 am Expired: Apr 21 3:30 pm Duration: 11 hrs   35 mins  
  Areas affected: Northwest Plateau; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Western Mojave Desert; Morongo Basin; Northeast Clark County; Western Clark and Southern Nye County; Sheep Range; Spring Mountains-Red Rock Canyon; Las Vegas Valley; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side
Effective: Apr 21 9:23 am Expired: Apr 21 11:00 pm Duration: 13 hrs   37 mins  
  Areas affected: Apple and Lucerne Valleys; San Diego County Deserts
Effective: Apr 21 10:30 am Expired: Apr 21 10:15 pm Duration: 11 hrs   45 mins  
  Areas affected: San Bernardino County Mountains
Effective: Apr 21 10:30 am Expired: Apr 21 10:15 pm Duration: 11 hrs   45 mins  
  Areas affected: Northwest Plateau; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Western Mojave Desert; Morongo Basin; Northeast Clark County; Western Clark and Southern Nye County; Sheep Range; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side
Effective: Apr 21 10:28 am Expired: Apr 21 11:00 pm Duration: 12 hrs   32 mins  
  Areas affected: Joshua Tree NP West
Effective: Apr 21 1:34 pm Expired: Apr 22 12:00 am Duration: 10 hrs   26 mins  
Siskiyou County
WWY.gif   WINTER WEATHER ADVISORY   (2 updates)
  Areas affected: Western Siskiyou County; Central Siskiyou County; South Central Siskiyou County
Effective: Apr 20 12:59 pm Expired: Apr 21 6:00 am Duration: 17 hrs   01 min  
  Areas affected: Western Siskiyou County; Central Siskiyou County; South Central Siskiyou County
Effective: Apr 21 3:06 am Expired: Apr 21 11:00 am Duration: 7 hrs   54 mins  
Trinity County
WWY.gif   WINTER WEATHER ADVISORY   (2 updates)
  Areas affected: Northeastern Trinity
Effective: Apr 20 8:51 pm Expired: Apr 21 5:00 am Duration: 8 hrs   09 mins  
  Areas affected: Northeastern Trinity
Effective: Apr 21 5:49 am Expired: Apr 21 11:00 am Duration: 5 hrs   11 mins  
Plumas County   2 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
SPS.gif   SPECIAL WEATHER STATEMENT  
At 511 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Sierra Nevada of Tehama-Butte-Plumas Counties Between 1000-3000 ft; Northern Sacramento Valley in Tehama County; Eastern Glenn County; Butte County Below 1000 ft
Effective: Apr 21 5:12 pm Expired: Apr 21 6:00 pm Duration: 0 hrs   48 mins  
Calaveras County   2 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 20 2:11 pm Expired: Apr 21 5:15 pm Duration: 1 day   3 hrs   04 mins  
  Areas affected: Lassen Volcanic National Park; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Effective: Apr 21 11:02 am Expired: Apr 22 5:00 pm Duration: 1 day   5 hrs   58 mins  
FLS.gif   FLOOD ADVISORY  
  Areas affected: Amador, CA; Calaveras, CA; El Dorado, CA; Nevada, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Sutter, CA; Tuolumne, CA; Yolo, CA
Effective: Apr 21 1:28 pm Expired: Apr 21 7:30 pm Duration: 6 hrs   02 mins  
Inyo County   2 alerts
WIY.gif   WIND ADVISORY   (4 updates)
  Areas affected: Eastern Sierra Slopes of Inyo County; White Mountains of Inyo County; Owens Valley South; Owens Valley North; Lincoln County
Effective: Apr 20 10:32 am Expired: Apr 21 5:15 am Duration: 18 hrs   43 mins  
  Areas affected: Eastern Sierra Slopes of Inyo County; White Mountains of Inyo County; Owens Valley South; Owens Valley North; Lincoln County
Effective: Apr 21 12:34 am Expired: Apr 21 9:45 am Duration: 9 hrs   11 mins  
  Areas affected: Eastern Sierra Slopes of Inyo County; White Mountains of Inyo County; Owens Valley South; Owens Valley North; Lincoln County
Effective: Apr 21 9:23 am Expired: Apr 21 11:00 pm Duration: 13 hrs   37 mins  
  Areas affected: Eastern Sierra Slopes of Inyo County; White Mountains of Inyo County; Owens Valley South; Owens Valley North; Lincoln County
Effective: Apr 21 10:28 am Expired: Apr 21 11:00 pm Duration: 12 hrs   32 mins  
HWW.gif   HIGH WIND WARNING   (4 updates)
  Areas affected: Death Valley National Park
Effective: Apr 20 10:32 am Expired: Apr 21 5:15 am Duration: 18 hrs   43 mins  
  Areas affected: Death Valley National Park; Esmeralda and Central Nye County
Effective: Apr 21 12:34 am Expired: Apr 21 9:45 am Duration: 9 hrs   11 mins  
  Areas affected: Death Valley National Park; Esmeralda and Central Nye County
Effective: Apr 21 9:23 am Expired: Apr 21 11:00 pm Duration: 13 hrs   37 mins  
  Areas affected: Death Valley National Park; Esmeralda and Central Nye County
Effective: Apr 21 10:28 am Expired: Apr 21 11:00 pm Duration: 12 hrs   32 mins  
Ventura County
WIY.gif   WIND ADVISORY  
  Areas affected: Southern Ventura County Mountains; Northern Ventura County Mountains
Effective: Apr 21 10:00 am Expired: Apr 21 5:00 pm Duration: 7 hrs   00 mins  
Merced County   2 alerts
SPS.gif   SPECIAL WEATHER STATEMENT   (8 updates)
At 1132 AM PDT, Doppler radar was tracking a strong thunderstorm 13
  Areas affected: West Side Mountains north of 198; Los Banos - Dos Palos; Merced - Madera - Mendota
Effective: Apr 21 11:33 am Expired: Apr 21 12:00 pm Duration: 0 hrs   27 mins  
At 1216 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: West Side Mountains north of 198; Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:16 pm Expired: Apr 21 12:45 pm Duration: 0 hrs   29 mins  
At 1241 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:41 pm Expired: Apr 21 1:15 pm Duration: 0 hrs   34 mins  
At 147 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; Caruthers - San Joaquin - Selma; Fresno-Clovis
Effective: Apr 21 1:48 pm Expired: Apr 21 2:15 pm Duration: 0 hrs   27 mins  
At 310 PM PDT, Doppler radar was tracking a strong thunderstorm 9
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota
Effective: Apr 21 3:10 pm Expired: Apr 21 3:45 pm Duration: 0 hrs   35 mins  
At 354 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Planada - Le Grand - Snelling; Fresno-Clovis; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills
Effective: Apr 21 3:54 pm Expired: Apr 21 4:30 pm Duration: 0 hrs   36 mins  
At 410 PM PDT, Doppler radar was tracking a strong thunderstorm over
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 4:10 pm Expired: Apr 21 4:45 pm Duration: 0 hrs   35 mins  
At 512 PM PDT, Doppler radar was tracking a strong thunderstorm 7
  Areas affected: Planada - Le Grand - Snelling; Fresno-Clovis; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills; Fresno-Tulare Lower Sierra; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge
Effective: Apr 21 5:12 pm Expired: Apr 21 5:45 pm Duration: 0 hrs   33 mins  
SVR.gif   SEVERE THUNDERSTORM WARNING   (2 updates)
SVRHNX
  Areas affected: Fresno, CA; Madera, CA; Merced, CA
Effective: Apr 21 3:19 pm Expired: Apr 21 3:45 pm Duration: 0 hrs   26 mins  
SVRHNX
  Areas affected: Fresno, CA; Madera, CA; Merced, CA
Effective: Apr 21 3:43 pm Expired: Apr 21 4:15 pm Duration: 0 hrs   32 mins  
Kings County
SPS.gif   SPECIAL WEATHER STATEMENT   (3 updates)
At 1216 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: West Side Mountains north of 198; Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:16 pm Expired: Apr 21 12:45 pm Duration: 0 hrs   29 mins  
At 1241 PM PDT, Doppler radar was tracking strong thunderstorms along
  Areas affected: Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
Effective: Apr 21 12:41 pm Expired: Apr 21 1:15 pm Duration: 0 hrs   34 mins  
At 104 PM PDT, Doppler radar was tracking a strong thunderstorm 7
  Areas affected: West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Hanford - Corcoran - Lemoore
Effective: Apr 21 1:04 pm Expired: Apr 21 1:30 pm Duration: 0 hrs   26 mins  
Sacramento County
FLS.gif   FLOOD ADVISORY  
  Areas affected: Amador, CA; Calaveras, CA; El Dorado, CA; Nevada, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Sutter, CA; Tuolumne, CA; Yolo, CA
Effective: Apr 21 1:28 pm Expired: Apr 21 7:30 pm Duration: 6 hrs   02 mins  
San Joaquin County
FLS.gif   FLOOD ADVISORY  
  Areas affected: Amador, CA; Calaveras, CA; El Dorado, CA; Nevada, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Sutter, CA; Tuolumne, CA; Yolo, CA
Effective: Apr 21 1:28 pm Expired: Apr 21 7:30 pm Duration: 6 hrs   02 mins  
Stanislaus County
FLS.gif   FLOOD ADVISORY  
  Areas affected: Amador, CA; Calaveras, CA; El Dorado, CA; Nevada, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Sutter, CA; Tuolumne, CA; Yolo, CA
Effective: Apr 21 1:28 pm Expired: Apr 21 7:30 pm Duration: 6 hrs   02 mins  
Sutter County
FLS.gif   FLOOD ADVISORY  
  Areas affected: Amador, CA; Calaveras, CA; El Dorado, CA; Nevada, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Sutter, CA; Tuolumne, CA; Yolo, CA
Effective: Apr 21 1:28 pm Expired: Apr 21 7:30 pm Duration: 6 hrs   02 mins  
Yolo County
FLS.gif   FLOOD ADVISORY  
  Areas affected: Amador, CA; Calaveras, CA; El Dorado, CA; Nevada, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Sutter, CA; Tuolumne, CA; Yolo, CA
Effective: Apr 21 1:28 pm Expired: Apr 21 7:30 pm Duration: 6 hrs   02 mins  
Glenn County   2 alerts
SVR.gif   SEVERE THUNDERSTORM WARNING   (5 updates)
SVRSTO
  Areas affected: Glenn, CA
Effective: Apr 21 3:10 pm Expired: Apr 21 4:00 pm Duration: 0 hrs   50 mins  
At 325 PM PDT, a severe thunderstorm was located near Fruto, or near
  Areas affected: Glenn, CA
Effective: Apr 21 3:26 pm Expired: Apr 21 4:00 pm Duration: 0 hrs   34 mins  
At 335 PM PDT, a severe thunderstorm was located near Fruto, or 8
  Areas affected: Glenn, CA
Effective: Apr 21 3:36 pm Expired: Apr 21 4:00 pm Duration: 0 hrs   24 mins  
SVRSTO
  Areas affected: Butte, CA; Glenn, CA; Tehama, CA
Effective: Apr 21 3:56 pm Expired: Apr 21 4:45 pm Duration: 0 hrs   49 mins  
At 413 PM PDT, a severe thunderstorm was located over Orland, moving
  Areas affected: Butte, CA; Glenn, CA; Tehama, CA
Effective: Apr 21 4:13 pm Expired: Apr 21 4:45 pm Duration: 0 hrs   32 mins  
SPS.gif   SPECIAL WEATHER STATEMENT   (2 updates)
At 440 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Northern Sacramento Valley in Tehama County; Central Glenn County Including Interstate 5; Eastern Glenn County; Butte County Below 1000 ft
Effective: Apr 21 4:41 pm Expired: Apr 21 5:15 pm Duration: 0 hrs   34 mins  
At 511 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: Sierra Nevada of Tehama-Butte-Plumas Counties Between 1000-3000 ft; Northern Sacramento Valley in Tehama County; Eastern Glenn County; Butte County Below 1000 ft
Effective: Apr 21 5:12 pm Expired: Apr 21 6:00 pm Duration: 0 hrs   48 mins  


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