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

Updates Every 15 Minutes
Spacer GifLast Update:February 21, 2026 - 8:00 am PDT
El Dorado County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Placer County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Nevada County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Plumas County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Amador County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Alpine County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Butte County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Calaveras County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Lassen County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Shasta County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Sierra County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Tehama County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Tuolumne County
SWA.gif   COLD WEATHER ADVISORY   (2 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
  Areas affected: Mariposa-Madera Lower Sierra; Fresno-Tulare Lower Sierra; South End of the Lower Sierra; Yosemite NP outside of the valley; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP; South End of the Upper Sierra
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
Yuba County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  
Alameda County
SWA.gif   COLD WEATHER ADVISORY   (2 updates)
  Areas affected: North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Northern Salinas Valley/Hollister Valley and Carmel Valley
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
  Areas affected: East Bay Hills
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
Contra Costa County
SWA.gif   COLD WEATHER ADVISORY   (2 updates)
  Areas affected: North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Northern Salinas Valley/Hollister Valley and Carmel Valley
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
  Areas affected: East Bay Hills
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
Los Angeles County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Northern Salinas Valley/Hollister Valley and Carmel Valley
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
Marin County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Northern Salinas Valley/Hollister Valley and Carmel Valley
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
Monterey County   2 alerts
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Northern Salinas Valley/Hollister Valley and Carmel Valley
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
HZW.gif   EXTREME COLD WARNING  
  Areas affected: Eastern Santa Clara Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
Napa County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Northern Salinas Valley/Hollister Valley and Carmel Valley
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
San Benito County   2 alerts
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Northern Salinas Valley/Hollister Valley and Carmel Valley
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
HZW.gif   EXTREME COLD WARNING  
  Areas affected: Eastern Santa Clara Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
Santa Clara County   2 alerts
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Northern Salinas Valley/Hollister Valley and Carmel Valley
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
HZW.gif   EXTREME COLD WARNING  
  Areas affected: Eastern Santa Clara Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
Sonoma County
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Northern Salinas Valley/Hollister Valley and Carmel Valley
Effective: Feb 20 12:00 pm Expired: Feb 21 4:00 am Duration: 16 hrs   00 mins  
Del Norte County
HWW.gif   HIGH WIND WARNING   (2 updates)
  Areas affected: Del Norte Interior; Southwestern Humboldt; Northern Humboldt Interior; Southern Humboldt Interior
Effective: Feb 20 10:11 pm Expired: Feb 21 12:00 pm Duration: 13 hrs   49 mins  
  Areas affected: Coastal Del Norte
Effective: Feb 20 10:11 pm Expired: Feb 21 12:00 pm Duration: 13 hrs   49 mins  
Humboldt County   2 alerts
HWW.gif   HIGH WIND WARNING  
  Areas affected: Del Norte Interior; Southwestern Humboldt; Northern Humboldt Interior; Southern Humboldt Interior
Effective: Feb 20 10:11 pm Expired: Feb 21 12:00 pm Duration: 13 hrs   49 mins  
WIY.gif   WIND ADVISORY  
  Areas affected: Northern Humboldt Coast
Effective: Feb 20 10:11 pm Expired: Feb 21 12:00 pm Duration: 13 hrs   49 mins  
Fresno County   2 alerts
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Mariposa-Madera Lower Sierra; Fresno-Tulare Lower Sierra; South End of the Lower Sierra; Yosemite NP outside of the valley; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP; South End of the Upper Sierra
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
FZW.gif   FREEZE WARNING  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
Kern County   2 alerts
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Mariposa-Madera Lower Sierra; Fresno-Tulare Lower Sierra; South End of the Lower Sierra; Yosemite NP outside of the valley; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP; South End of the Upper Sierra
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
FZW.gif   FREEZE WARNING  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
Madera County   2 alerts
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Mariposa-Madera Lower Sierra; Fresno-Tulare Lower Sierra; South End of the Lower Sierra; Yosemite NP outside of the valley; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP; South End of the Upper Sierra
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
FZW.gif   FREEZE WARNING  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
Mariposa County   2 alerts
SWA.gif   COLD WEATHER ADVISORY   (2 updates)
  Areas affected: Mariposa-Madera Lower Sierra; Fresno-Tulare Lower Sierra; South End of the Lower Sierra; Yosemite NP outside of the valley; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP; South End of the Upper Sierra
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
  Areas affected: Yosemite Valley
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
FZW.gif   FREEZE WARNING  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
Tulare County   2 alerts
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Mariposa-Madera Lower Sierra; Fresno-Tulare Lower Sierra; South End of the Lower Sierra; Yosemite NP outside of the valley; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP; South End of the Upper Sierra
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
FZW.gif   FREEZE WARNING  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
Kings County
FZW.gif   FREEZE WARNING  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
Merced County
FZW.gif   FREEZE WARNING  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley
Effective: Feb 20 5:40 pm Expired: Feb 21 1:45 am Duration: 8 hrs   05 mins  
Mendocino County
WIY.gif   WIND ADVISORY  
  Areas affected: Mendocino Coast; Northwestern Mendocino Interior; Southwestern Mendocino Interior
Effective: Feb 20 10:11 pm Expired: Feb 21 12:00 pm Duration: 13 hrs   49 mins  
Santa Barbara County
FZW.gif   FREEZE WARNING  
  Areas affected: Cuyama Valley; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills
Effective: Feb 20 8:22 pm Expired: Feb 21 9:00 am Duration: 12 hrs   38 mins  
Siskiyou County   3 alerts
WSW.gif   WINTER STORM WARNING  
  Areas affected: Western Siskiyou County; South Central Siskiyou County; North Central and Southeast Siskiyou County
Effective: Feb 20 10:07 pm Expired: Feb 21 7:15 am Duration: 9 hrs   08 mins  
WIY.gif   WIND ADVISORY  
  Areas affected: Central Siskiyou County
Effective: Feb 20 9:56 pm Expired: Feb 21 7:00 am Duration: 9 hrs   04 mins  
SPS.gif   HYDROLOGIC OUTLOOK  
ESFMFR
  Areas affected: Siskiyou, CA; Coos, OR; Curry, OR; Josephine, OR
Effective: Feb 20 1:44 pm Expired: Feb 21 4:00 pm Duration: 1 day   2 hrs   16 mins  
Trinity County
WSW.gif   WINTER STORM WARNING  
  Areas affected: Northern Trinity
Effective: Feb 20 6:30 pm Expired: Feb 21 12:00 pm Duration: 17 hrs   30 mins  
Ventura County
FRY.gif   FROST ADVISORY  
  Areas affected: Santa Clarita Valley; Ojai Valley; Central Ventura County Valleys; Calabasas and Agoura Hills; Western San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains
Effective: Feb 20 8:22 pm Expired: Feb 21 9:00 am Duration: 12 hrs   38 mins  
W. Slope N. Sierra
SWA.gif   COLD WEATHER ADVISORY  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Feb 20 12:19 pm Expired: Feb 21 10:00 am Duration: 21 hrs   41 mins  


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