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

Updates Every 15 Minutes
Spacer GifLast Update:April 17, 2026 - 7:00 am PDT
Plumas County
FZW.gif   FREEZE WARNING  
  Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Apr 16 1:28 am Expired: Apr 17 8:00 am Duration: 1 day   6 hrs   32 mins  
Lassen County
FZW.gif   FREEZE WARNING  
  Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Apr 16 1:28 am Expired: Apr 17 8:00 am Duration: 1 day   6 hrs   32 mins  
Sierra County
FZW.gif   FREEZE WARNING  
  Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Apr 16 1:28 am Expired: Apr 17 8:00 am Duration: 1 day   6 hrs   32 mins  
Del Norte County   2 alerts
FZW.gif   FREEZE WARNING   (2 updates)
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 16 8:46 pm Expired: Apr 17 5:00 am Duration: 8 hrs   14 mins  
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 17 5:11 am Expired: Apr 17 9:00 am Duration: 3 hrs   49 mins  
FRY.gif   FROST ADVISORY   (2 updates)
  Areas affected: Coastal Del Norte; Northern Coastal Humboldt; Southwestern Humboldt; Coastal Mendocino; Southwestern Interior Mendocino; Southeastern Interior Mendocino
Effective: Apr 16 8:46 pm Expired: Apr 17 5:00 am Duration: 8 hrs   14 mins  
  Areas affected: Coastal Del Norte; Northern Coastal Humboldt; Southwestern Humboldt; Coastal Mendocino; Southwestern Interior Mendocino; Southeastern Interior Mendocino
Effective: Apr 17 5:11 am Expired: Apr 17 9:00 am Duration: 3 hrs   49 mins  
Humboldt County   2 alerts
FZW.gif   FREEZE WARNING   (2 updates)
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 16 8:46 pm Expired: Apr 17 5:00 am Duration: 8 hrs   14 mins  
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 17 5:11 am Expired: Apr 17 9:00 am Duration: 3 hrs   49 mins  
FRY.gif   FROST ADVISORY   (2 updates)
  Areas affected: Coastal Del Norte; Northern Coastal Humboldt; Southwestern Humboldt; Coastal Mendocino; Southwestern Interior Mendocino; Southeastern Interior Mendocino
Effective: Apr 16 8:46 pm Expired: Apr 17 5:00 am Duration: 8 hrs   14 mins  
  Areas affected: Coastal Del Norte; Northern Coastal Humboldt; Southwestern Humboldt; Coastal Mendocino; Southwestern Interior Mendocino; Southeastern Interior Mendocino
Effective: Apr 17 5:11 am Expired: Apr 17 9:00 am Duration: 3 hrs   49 mins  
Mendocino County   2 alerts
FZW.gif   FREEZE WARNING   (2 updates)
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 16 8:46 pm Expired: Apr 17 5:00 am Duration: 8 hrs   14 mins  
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 17 5:11 am Expired: Apr 17 9:00 am Duration: 3 hrs   49 mins  
FRY.gif   FROST ADVISORY   (2 updates)
  Areas affected: Coastal Del Norte; Northern Coastal Humboldt; Southwestern Humboldt; Coastal Mendocino; Southwestern Interior Mendocino; Southeastern Interior Mendocino
Effective: Apr 16 8:46 pm Expired: Apr 17 5:00 am Duration: 8 hrs   14 mins  
  Areas affected: Coastal Del Norte; Northern Coastal Humboldt; Southwestern Humboldt; Coastal Mendocino; Southwestern Interior Mendocino; Southeastern Interior Mendocino
Effective: Apr 17 5:11 am Expired: Apr 17 9:00 am Duration: 3 hrs   49 mins  
Trinity County
FZW.gif   FREEZE WARNING   (2 updates)
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 16 8:46 pm Expired: Apr 17 5:00 am Duration: 8 hrs   14 mins  
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 17 5:11 am Expired: Apr 17 9:00 am Duration: 3 hrs   49 mins  
Northern Lake County
FZW.gif   FREEZE WARNING   (2 updates)
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 16 8:46 pm Expired: Apr 17 5:00 am Duration: 8 hrs   14 mins  
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 17 5:11 am Expired: Apr 17 9:00 am Duration: 3 hrs   49 mins  
Imperial County   2 alerts
WIY.gif   WIND ADVISORY   (2 updates)
  Areas affected: Parker Valley; Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Imperial County Southeast; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Apr 16 12:03 pm Expired: Apr 17 5:30 am Duration: 17 hrs   27 mins  
  Areas affected: Parker Valley; Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Imperial County Southeast; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Apr 17 3:02 am Expired: Apr 17 1:00 pm Duration: 9 hrs   58 mins  
SPS.gif   AIR QUALITY ALERT  
  Areas affected: Imperial County Southwest; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley
Effective: Apr 15 5:21 pm Expired: Apr 17 5:00 pm Duration: 1 day   23 hrs   39 mins  
Riverside County   2 alerts
WIY.gif   WIND ADVISORY   (4 updates)
  Areas affected: Parker Valley; Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Imperial County Southeast; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Apr 16 12:03 pm Expired: Apr 17 5:30 am Duration: 17 hrs   27 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Santa Ana Mountains and Foothills; Orange County Inland
Effective: Apr 16 9:49 pm Expired: Apr 17 6:15 am Duration: 8 hrs   26 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Santa Ana Mountains and Foothills; Orange County Inland
Effective: Apr 17 2:07 am Expired: Apr 17 3:30 pm Duration: 13 hrs   23 mins  
  Areas affected: Parker Valley; Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Imperial County Southeast; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Apr 17 3:02 am Expired: Apr 17 1:00 pm Duration: 9 hrs   58 mins  
SPS.gif   AIR QUALITY ALERT  
  Areas affected: Imperial County Southwest; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley
Effective: Apr 15 5:21 pm Expired: Apr 17 5:00 pm Duration: 1 day   23 hrs   39 mins  
San Bernardino County
WIY.gif   WIND ADVISORY   (11 updates)
  Areas affected: Parker Valley; Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Imperial County Southeast; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Apr 16 12:03 pm Expired: Apr 17 5:30 am Duration: 17 hrs   27 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Santa Ana Mountains and Foothills; Orange County Inland
Effective: Apr 16 9:49 pm Expired: Apr 17 6:15 am Duration: 8 hrs   26 mins  
  Areas affected: Apple and Lucerne Valleys
Effective: Apr 16 9:49 pm Expired: Apr 17 2:00 am Duration: 4 hrs   11 mins  
  Areas affected: Lake Havasu and Fort Mohave; Lake Mohave - AZ side; San Bernardino County-Upper Colorado River Valley; Lake Mohave - NV side
Effective: Apr 16 12:28 pm Expired: Apr 17 12:30 am Duration: 12 hrs   02 mins  
  Areas affected: Hualapai Mountains; Northwest Deserts; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; Southern Clark County
Effective: Apr 16 12:28 pm Expired: Apr 17 12:30 am Duration: 12 hrs   02 mins  
  Areas affected: Hualapai Mountains; Northwest Deserts; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; Southern Clark County
Effective: Apr 17 12:31 am Expired: Apr 17 5:00 am Duration: 4 hrs   29 mins  
  Areas affected: Lake Havasu and Fort Mohave; Lake Mohave - AZ side; San Bernardino County-Upper Colorado River Valley; Lake Mohave - NV side
Effective: Apr 17 12:31 am Expired: Apr 17 5:00 am Duration: 4 hrs   29 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Santa Ana Mountains and Foothills; Orange County Inland
Effective: Apr 17 2:07 am Expired: Apr 17 3:30 pm Duration: 13 hrs   23 mins  
  Areas affected: Parker Valley; Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Imperial County Southeast; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Apr 17 3:02 am Expired: Apr 17 1:00 pm Duration: 9 hrs   58 mins  
  Areas affected: Lake Havasu and Fort Mohave; Lake Mohave - AZ side; San Bernardino County-Upper Colorado River Valley; Lake Mohave - NV side
Effective: Apr 17 4:56 am Expired: Apr 17 11:00 am Duration: 6 hrs   04 mins  
  Areas affected: Hualapai Mountains; Northwest Deserts; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; Southern Clark County
Effective: Apr 17 4:56 am Expired: Apr 17 11:00 am Duration: 6 hrs   04 mins  
Inyo County
WIY.gif   WIND ADVISORY   (2 updates)
  Areas affected: Northwest Plateau; Lake Mead - AZ side; Eastern Sierra Slopes of Inyo County; White Mountains of Inyo County; Death Valley National Park; Owens Valley South; Owens Valley North; Lincoln County; Northeast Clark County; Western Clark and Southern Nye County; Sheep Range; Spring Mountains-Red Rock Canyon; Las Vegas Valley; Lake Mead - NV side
Effective: Apr 16 12:28 pm Expired: Apr 17 12:30 am Duration: 12 hrs   02 mins  
  Areas affected: Northwest Plateau; Lake Mead - AZ side; Eastern Sierra Slopes of Inyo County; White Mountains of Inyo County; Death Valley National Park; Owens Valley South; Owens Valley North; Lincoln County; Northeast Clark County; Western Clark and Southern Nye County; Sheep Range; Spring Mountains-Red Rock Canyon; Las Vegas Valley; Lake Mead - NV side
Effective: Apr 17 12:31 am Expired: Apr 17 5:00 am Duration: 4 hrs   29 mins  
Kern County
WIY.gif   WIND ADVISORY   (2 updates)
  Areas affected: Mojave Desert Slopes
Effective: Apr 16 10:33 pm Expired: Apr 17 6:00 am Duration: 7 hrs   27 mins  
  Areas affected: Indian Wells Valley; Mojave Desert
Effective: Apr 16 10:33 pm Expired: Apr 17 6:00 am Duration: 7 hrs   27 mins  
Modoc County
FZW.gif   FREEZE WARNING  
  Areas affected: Surprise Valley California; Northern Washoe County
Effective: Apr 16 1:28 am Expired: Apr 17 8:00 am Duration: 1 day   6 hrs   32 mins  
Orange County
WIY.gif   WIND ADVISORY   (2 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Santa Ana Mountains and Foothills; Orange County Inland
Effective: Apr 16 9:49 pm Expired: Apr 17 6:15 am Duration: 8 hrs   26 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Santa Ana Mountains and Foothills; Orange County Inland
Effective: Apr 17 2:07 am Expired: Apr 17 3:30 pm Duration: 13 hrs   23 mins  
San Diego County
WIY.gif   WIND ADVISORY   (2 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Santa Ana Mountains and Foothills; Orange County Inland
Effective: Apr 16 9:49 pm Expired: Apr 17 6:15 am Duration: 8 hrs   26 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Santa Ana Mountains and Foothills; Orange County Inland
Effective: Apr 17 2:07 am Expired: Apr 17 3:30 pm Duration: 13 hrs   23 mins  
San Luis Obispo County
WIY.gif   WIND ADVISORY   (3 updates)
  Areas affected: Santa Lucia Mountains
Effective: Apr 16 8:09 pm Expired: Apr 17 3:00 am Duration: 6 hrs   51 mins  
  Areas affected: Santa Lucia Mountains
Effective: Apr 17 2:56 am Expired: Apr 17 8:00 am Duration: 5 hrs   04 mins  
  Areas affected: Santa Lucia Mountains
Effective: Apr 17 5:29 am Expired: Apr 17 8:00 am Duration: 2 hrs   31 mins  
Santa Barbara County
WIY.gif   WIND ADVISORY   (2 updates)
  Areas affected: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor
Effective: Apr 16 8:09 pm Expired: Apr 17 3:00 am Duration: 6 hrs   51 mins  
  Areas affected: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Effective: Apr 16 8:09 pm Expired: Apr 17 3:00 am Duration: 6 hrs   51 mins  
Ventura County
WIY.gif   WIND ADVISORY   (8 updates)
  Areas affected: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor
Effective: Apr 16 8:09 pm Expired: Apr 17 3:00 am Duration: 6 hrs   51 mins  
  Areas affected: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Effective: Apr 16 8:09 pm Expired: Apr 17 3:00 am Duration: 6 hrs   51 mins  
  Areas affected: Santa Clarita Valley; Ventura County Beaches; Ventura County Inland Coast; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains
Effective: Apr 16 8:09 pm Expired: Apr 17 3:00 am Duration: 6 hrs   51 mins  
  Areas affected: Santa Clarita Valley; Ventura County Beaches; Ventura County Inland Coast; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains
Effective: Apr 17 2:56 am Expired: Apr 17 2:00 pm Duration: 11 hrs   04 mins  
  Areas affected: Southern Ventura County Mountains; Interstate 5 Corridor
Effective: Apr 17 5:29 am Expired: Apr 17 2:00 pm Duration: 8 hrs   31 mins  
  Areas affected: Santa Clarita Valley; Ventura County Beaches; Ventura County Inland Coast; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains
Effective: Apr 17 5:29 am Expired: Apr 17 2:00 pm Duration: 8 hrs   31 mins  
  Areas affected: Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains
Effective: Apr 17 7:57 am Expired: Apr 17 2:00 pm Duration: 6 hrs   03 mins  
  Areas affected: Santa Clarita Valley; Ventura County Beaches; Ventura County Inland Coast; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains
Effective: Apr 17 7:57 am Expired: Apr 17 2:00 pm Duration: 6 hrs   03 mins  
Siskiyou County
FZW.gif   FREEZE WARNING   (2 updates)
  Areas affected: Western Siskiyou County; Eastern Curry County and Josephine County; Jackson County
Effective: Apr 16 10:43 am Expired: Apr 17 5:00 am Duration: 18 hrs   17 mins  
  Areas affected: Western Siskiyou County; Eastern Curry County and Josephine County; Jackson County
Effective: Apr 17 1:48 am Expired: Apr 17 9:00 am Duration: 7 hrs   12 mins  
Lake County
FZW.gif   FREEZE WARNING   (2 updates)
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 16 8:46 pm Expired: Apr 17 5:00 am Duration: 8 hrs   14 mins  
  Areas affected: Interior Del Norte; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity; Western Lake
Effective: Apr 17 5:11 am Expired: Apr 17 9:00 am Duration: 3 hrs   49 mins  


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