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

Updates Every 15 Minutes
Spacer GifLast Update:August 23, 2026 - 7:00 am PDT
Imperial County
SVW.gif   EXTREME HEAT WARNING   (2 updates)
  Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 22 11:42 am Expired: Aug 23 3:00 am Duration: 15 hrs   18 mins  
  Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 23 12:13 am Expired: Aug 23 3:30 pm Duration: 15 hrs   17 mins  
Riverside County   3 alerts
SVW.gif   EXTREME HEAT WARNING   (4 updates)
  Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 22 11:42 am Expired: Aug 23 3:00 am Duration: 15 hrs   18 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 23 12:13 am Expired: Aug 23 3:30 pm Duration: 15 hrs   17 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
SWA.gif   EXTREME HEAT WATCH   (2 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
Inyo County
SVW.gif   EXTREME HEAT WARNING   (2 updates)
  Areas affected: Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Northwest Deserts; Death Valley National Park; San Bernardino County-Upper Colorado River Valley; Las Vegas Valley; Lake Mead - NV side; Lake Mohave - NV side
Effective: Aug 22 3:31 pm Expired: Aug 23 5:15 am Duration: 13 hrs   44 mins  
  Areas affected: Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Northwest Deserts; Death Valley National Park; San Bernardino County-Upper Colorado River Valley; Las Vegas Valley; Lake Mead - NV side; Lake Mohave - NV side
Effective: Aug 23 1:44 am Expired: Aug 23 8:00 pm Duration: 18 hrs   16 mins  
San Bernardino County   3 alerts
SVW.gif   EXTREME HEAT WARNING   (2 updates)
  Areas affected: Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Northwest Deserts; Death Valley National Park; San Bernardino County-Upper Colorado River Valley; Las Vegas Valley; Lake Mead - NV side; Lake Mohave - NV side
Effective: Aug 22 3:31 pm Expired: Aug 23 5:15 am Duration: 13 hrs   44 mins  
  Areas affected: Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Northwest Deserts; Death Valley National Park; San Bernardino County-Upper Colorado River Valley; Las Vegas Valley; Lake Mead - NV side; Lake Mohave - NV side
Effective: Aug 23 1:44 am Expired: Aug 23 8:00 pm Duration: 18 hrs   16 mins  
HTY.gif   HEAT ADVISORY   (4 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino County Mountains
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
  Areas affected: San Bernardino County Mountains
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
SWA.gif   EXTREME HEAT WATCH   (6 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: Apple and Lucerne Valleys
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino County Mountains
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
  Areas affected: San Bernardino County Mountains
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
  Areas affected: Apple and Lucerne Valleys
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
Orange County   2 alerts
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
SWA.gif   EXTREME HEAT WATCH   (4 updates)
  Areas affected: San Diego County Coastal Areas; Orange County Coastal
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
  Areas affected: San Diego County Coastal Areas; Orange County Coastal
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
San Diego County   4 alerts
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
SWA.gif   EXTREME HEAT WATCH   (4 updates)
  Areas affected: San Diego County Coastal Areas; Orange County Coastal
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
  Areas affected: San Diego County Coastal Areas; Orange County Coastal
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
SVW.gif   EXTREME HEAT WARNING   (2 updates)
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 22 9:43 pm Expired: Aug 23 6:15 am Duration: 8 hrs   32 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 23 5:17 am Expired: Aug 23 2:15 pm Duration: 8 hrs   58 mins  
SPS.gif   SPECIAL WEATHER STATEMENT  
Be advised of patchy areas of dense fog currently forming along
  Areas affected: San Diego County Coastal Areas
Effective: Aug 23 4:49 am Expired: Aug 23 7:00 am Duration: 2 hrs   11 mins  
Santa Barbara County   2 alerts
HTY.gif   HEAT ADVISORY   (6 updates)
  Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles
Effective: Aug 22 7:35 pm Expired: Aug 23 7:45 am Duration: 12 hrs   10 mins  
  Areas affected: Santa Clarita Valley; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 22 7:35 pm Expired: Aug 23 7:45 am Duration: 12 hrs   10 mins  
  Areas affected: Cuyama Valley
Effective: Aug 22 7:35 pm Expired: Aug 23 7:45 am Duration: 12 hrs   10 mins  
  Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles
Effective: Aug 23 12:06 am Expired: Aug 25 10:00 am Duration: 2 days   9 hrs   54 mins  
  Areas affected: Cuyama Valley
Effective: Aug 23 12:06 am Expired: Aug 25 10:00 am Duration: 2 days   9 hrs   54 mins  
  Areas affected: Santa Clarita Valley; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 23 12:06 am Expired: Aug 25 10:00 am Duration: 2 days   9 hrs   54 mins  
SWA.gif   EXTREME HEAT WATCH   (6 updates)
  Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles
Effective: Aug 22 7:35 pm Expired: Aug 23 7:45 am Duration: 12 hrs   10 mins  
  Areas affected: Cuyama Valley
Effective: Aug 22 7:35 pm Expired: Aug 23 7:45 am Duration: 12 hrs   10 mins  
  Areas affected: Santa Clarita Valley; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 22 7:35 pm Expired: Aug 23 7:45 am Duration: 12 hrs   10 mins  
  Areas affected: Cuyama Valley
Effective: Aug 23 12:06 am Expired: Aug 25 10:00 am Duration: 2 days   9 hrs   54 mins  
  Areas affected: Santa Clarita Valley; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 23 12:06 am Expired: Aug 25 10:00 am Duration: 2 days   9 hrs   54 mins  
  Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles
Effective: Aug 23 12:06 am Expired: Aug 25 10:00 am Duration: 2 days   9 hrs   54 mins  
Ventura County   2 alerts
HTY.gif   HEAT ADVISORY   (4 updates)
  Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles
Effective: Aug 22 7:35 pm Expired: Aug 23 7:45 am Duration: 12 hrs   10 mins  
  Areas affected: Santa Clarita Valley; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 22 7:35 pm Expired: Aug 23 7:45 am Duration: 12 hrs   10 mins  
  Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles
Effective: Aug 23 12:06 am Expired: Aug 25 10:00 am Duration: 2 days   9 hrs   54 mins  
  Areas affected: Santa Clarita Valley; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 23 12:06 am Expired: Aug 25 10:00 am Duration: 2 days   9 hrs   54 mins  
SWA.gif   EXTREME HEAT WATCH   (4 updates)
  Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles
Effective: Aug 22 7:35 pm Expired: Aug 23 7:45 am Duration: 12 hrs   10 mins  
  Areas affected: Santa Clarita Valley; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 22 7:35 pm Expired: Aug 23 7:45 am Duration: 12 hrs   10 mins  
  Areas affected: Santa Clarita Valley; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 23 12:06 am Expired: Aug 25 10:00 am Duration: 2 days   9 hrs   54 mins  
  Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles
Effective: Aug 23 12:06 am Expired: Aug 25 10:00 am Duration: 2 days   9 hrs   54 mins  


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