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

Updates Every 15 Minutes
Spacer GifLast Update:March 12, 2026 - 7:00 am PDT
Orange County
HTY.gif   HEAT ADVISORY   (3 updates)
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 11 9:52 pm Expired: Mar 12 6:15 am Duration: 8 hrs   23 mins  
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 12 5:39 am Expired: Mar 12 4:00 pm Duration: 10 hrs   21 mins  
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 12 9:32 pm Expired: Mar 13 7:15 am Duration: 9 hrs   43 mins  
Riverside County
HTY.gif   HEAT ADVISORY   (3 updates)
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 11 9:52 pm Expired: Mar 12 6:15 am Duration: 8 hrs   23 mins  
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 12 5:39 am Expired: Mar 12 4:00 pm Duration: 10 hrs   21 mins  
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 12 9:32 pm Expired: Mar 13 7:15 am Duration: 9 hrs   43 mins  
San Bernardino County
HTY.gif   HEAT ADVISORY   (3 updates)
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 11 9:52 pm Expired: Mar 12 6:15 am Duration: 8 hrs   23 mins  
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 12 5:39 am Expired: Mar 12 4:00 pm Duration: 10 hrs   21 mins  
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 12 9:32 pm Expired: Mar 13 7:15 am Duration: 9 hrs   43 mins  
San Diego County
HTY.gif   HEAT ADVISORY   (3 updates)
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 11 9:52 pm Expired: Mar 12 6:15 am Duration: 8 hrs   23 mins  
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 12 5:39 am Expired: Mar 12 4:00 pm Duration: 10 hrs   21 mins  
  Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Mar 12 9:32 pm Expired: Mar 13 7:15 am Duration: 9 hrs   43 mins  
San Luis Obispo County
HTY.gif   HEAT ADVISORY   (3 updates)
  Areas affected: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Effective: Mar 11 11:11 am Expired: Mar 12 6:30 am Duration: 19 hrs   19 mins  
  Areas affected: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Effective: Mar 12 2:03 am Expired: Mar 12 2:15 pm Duration: 12 hrs   12 mins  
  Areas affected: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Effective: Mar 12 1:22 pm Expired: Mar 13 7:15 am Duration: 17 hrs   53 mins  
Santa Barbara County
HTY.gif   HEAT ADVISORY   (3 updates)
  Areas affected: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Effective: Mar 11 11:11 am Expired: Mar 12 6:30 am Duration: 19 hrs   19 mins  
  Areas affected: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Effective: Mar 12 2:03 am Expired: Mar 12 2:15 pm Duration: 12 hrs   12 mins  
  Areas affected: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Effective: Mar 12 1:22 pm Expired: Mar 13 7:15 am Duration: 17 hrs   53 mins  
Ventura County
HTY.gif   HEAT ADVISORY   (6 updates)
  Areas affected: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Effective: Mar 11 11:11 am Expired: Mar 12 6:30 am Duration: 19 hrs   19 mins  
  Areas affected: Santa Clarita Valley; Ventura County Beaches; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles; 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; Los Angeles County San Gabriel Valley
Effective: Mar 11 11:11 am Expired: Mar 12 6:30 am Duration: 19 hrs   19 mins  
  Areas affected: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Effective: Mar 12 2:03 am Expired: Mar 12 2:15 pm Duration: 12 hrs   12 mins  
  Areas affected: Santa Clarita Valley; Ventura County Beaches; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles; 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; Los Angeles County San Gabriel Valley
Effective: Mar 12 2:03 am Expired: Mar 12 2:15 pm Duration: 12 hrs   12 mins  
  Areas affected: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Effective: Mar 12 1:22 pm Expired: Mar 13 7:15 am Duration: 17 hrs   53 mins  
  Areas affected: Santa Clarita Valley; Ventura County Beaches; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles; 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; Los Angeles County San Gabriel Valley
Effective: Mar 12 1:22 pm Expired: Mar 13 7:15 am Duration: 17 hrs   53 mins  


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