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

Updates Every 15 Minutes
Spacer GifLast Update:April 11, 2026 - 7:00 am PDT
El Dorado County
WSW.gif   WINTER STORM WARNING   (3 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 10 8:21 am Expired: Apr 11 4:00 pm Duration: 1 day   7 hrs   39 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
W. Slope N. Sierra
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
Placer County
WSW.gif   WINTER STORM WARNING   (3 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 10 8:21 am Expired: Apr 11 4:00 pm Duration: 1 day   7 hrs   39 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
Nevada County
WSW.gif   WINTER STORM WARNING   (3 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 10 8:21 am Expired: Apr 11 4:00 pm Duration: 1 day   7 hrs   39 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
Plumas County   2 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
WWY.gif   WINTER WEATHER ADVISORY  
  Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Apr 10 8:21 am Expired: Apr 11 4:00 pm Duration: 1 day   7 hrs   39 mins  
Amador County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
Butte County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
Calaveras County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
Lassen County   2 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
WWY.gif   WINTER WEATHER ADVISORY  
  Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Apr 10 8:21 am Expired: Apr 11 4:00 pm Duration: 1 day   7 hrs   39 mins  
Shasta County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
Sierra County   2 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
WWY.gif   WINTER WEATHER ADVISORY  
  Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Apr 10 8:21 am Expired: Apr 11 4:00 pm Duration: 1 day   7 hrs   39 mins  
Tehama County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
Yuba County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
Fresno County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 10 7:34 pm Expired: Apr 11 4:00 am Duration: 8 hrs   26 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 11 3:48 am Expired: Apr 11 12:00 pm Duration: 8 hrs   12 mins  
Kern County   2 alerts
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 10 7:34 pm Expired: Apr 11 4:00 am Duration: 8 hrs   26 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 11 3:48 am Expired: Apr 11 12:00 pm Duration: 8 hrs   12 mins  
WIY.gif   WIND ADVISORY   (2 updates)
  Areas affected: Mojave Desert Slopes
Effective: Apr 10 10:44 pm Expired: Apr 11 7:00 am Duration: 8 hrs   16 mins  
  Areas affected: Mojave Desert Slopes
Effective: Apr 11 6:47 am Expired: Apr 11 3:00 pm Duration: 8 hrs   13 mins  
Madera County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 10 7:34 pm Expired: Apr 11 4:00 am Duration: 8 hrs   26 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 11 3:48 am Expired: Apr 11 12:00 pm Duration: 8 hrs   12 mins  
Mariposa County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 10 7:34 pm Expired: Apr 11 4:00 am Duration: 8 hrs   26 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 11 3:48 am Expired: Apr 11 12:00 pm Duration: 8 hrs   12 mins  
Tulare County
WSW.gif   WINTER STORM WARNING   (2 updates)
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 10 7:34 pm Expired: Apr 11 4:00 am Duration: 8 hrs   26 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 11 3:48 am Expired: Apr 11 12:00 pm Duration: 8 hrs   12 mins  
Imperial County
WIY.gif   WIND ADVISORY  
  Areas affected: Imperial County Southwest
Effective: Apr 10 12:51 pm Expired: Apr 11 4:00 am Duration: 15 hrs   09 mins  
Inyo County
WWY.gif   WINTER WEATHER ADVISORY  
  Areas affected: Eastern Sierra Slopes of Inyo County
Effective: Apr 10 10:53 pm Expired: Apr 11 11:00 am Duration: 12 hrs   07 mins  
Mono County
WSW.gif   WINTER STORM WARNING  
  Areas affected: Mono
Effective: Apr 10 8:21 am Expired: Apr 11 4:00 pm Duration: 1 day   7 hrs   39 mins  
Riverside County
SPS.gif   AIR QUALITY ALERT   (2 updates)
  Areas affected: Coachella Valley; San Gorgonio Pass Near Banning
Effective: Apr 10 1:21 pm Expired: Apr 11 1:30 pm Duration: 1 day   0 hrs   09 mins  
  Areas affected: Coachella Valley; San Gorgonio Pass Near Banning
Effective: Apr 9 12:57 pm Expired: Apr 11 3:00 am Duration: 1 day   14 hrs   03 mins  
Santa Barbara County
WWY.gif   WINTER WEATHER ADVISORY   (2 updates)
  Areas affected: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains
Effective: Apr 10 12:07 pm Expired: Apr 13 11:00 am Duration: 2 days   22 hrs   53 mins  
  Areas affected: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains
Effective: Apr 11 12:28 am Expired: Apr 11 9:00 pm Duration: 20 hrs   32 mins  
Ventura County
WWY.gif   WINTER WEATHER ADVISORY   (2 updates)
  Areas affected: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains
Effective: Apr 10 12:07 pm Expired: Apr 13 11:00 am Duration: 2 days   22 hrs   53 mins  
  Areas affected: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains
Effective: Apr 11 12:28 am Expired: Apr 11 9:00 pm Duration: 20 hrs   32 mins  
Siskiyou County
WWY.gif   WINTER WEATHER ADVISORY   (2 updates)
  Areas affected: Western Siskiyou County
Effective: Apr 10 10:33 pm Expired: Apr 11 8:00 am Duration: 9 hrs   27 mins  
  Areas affected: Western Siskiyou County
Effective: Apr 11 2:02 am Expired: Apr 11 5:30 pm Duration: 15 hrs   28 mins  
Trinity County
WWY.gif   WINTER WEATHER ADVISORY   (3 updates)
  Areas affected: Northern Trinity
Effective: Apr 10 12:09 pm Expired: Apr 10 11:00 pm Duration: 10 hrs   51 mins  
  Areas affected: Northern Trinity
Effective: Apr 11 12:25 am Expired: Apr 11 8:30 am Duration: 8 hrs   05 mins  
  Areas affected: Northern Trinity
Effective: Apr 11 8:11 am Expired: Apr 11 11:00 pm Duration: 14 hrs   49 mins  
Alpine County
WSW.gif   WINTER STORM WARNING   (3 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Greater Lake Tahoe Area; Greater Lake Tahoe Area
Effective: Apr 10 8:21 am Expired: Apr 11 4:00 pm Duration: 1 day   7 hrs   39 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  
Tuolumne County
WSW.gif   WINTER STORM WARNING   (4 updates)
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 10 10:34 am Expired: Apr 11 11:15 am Duration: 1 day   0 hrs   41 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 10 7:34 pm Expired: Apr 11 4:00 am Duration: 8 hrs   26 mins  
  Areas affected: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
Effective: Apr 11 3:48 am Expired: Apr 11 12:00 pm Duration: 8 hrs   12 mins  
  Areas affected: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
Effective: Apr 11 9:14 am Expired: Apr 12 1:00 pm Duration: 1 day   3 hrs   46 mins  


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