California County Alert Archives from the National Weather Service

Alert Archives for All California Counties

If there's no Alerts for the day, there's no log file

Select a date: 53 total alerts issued on this day Updates Every 15 Minutes
Alert Summary \| Alert RSS Feed \| Alert Archives \| Icon key Last Update:August 29, 2026 - 7:00 am PDT

Imperial County 2 alerts

AIR QUALITY ALERT
Areas affected: Imperial County Southwest; Imperial County West; Imperial Valley
Effective: Aug 28 3:45 pm	Expired: Aug 30 12:00 am	Duration: 1 day 8 hrs 15 mins

EXTREME HEAT WARNING (3 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 28 1:56 pm	Expired: Aug 29 4:00 am	Duration: 14 hrs 04 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 29 12:09 am	Expired: Aug 29 8:00 pm	Duration: 19 hrs 51 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 29 9:29 am	Expired: Aug 29 8:00 pm	Duration: 10 hrs 31 mins

Riverside County

EXTREME HEAT WARNING (9 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 28 1:56 pm	Expired: Aug 29 4:00 am	Duration: 14 hrs 04 mins
Areas affected: Santa Ana Mountains and Foothills
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 mins
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 mins
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 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 29 12:09 am	Expired: Aug 29 8:00 pm	Duration: 19 hrs 51 mins
Areas affected: Santa Ana Mountains and Foothills
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 mins
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 mins
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 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 29 9:29 am	Expired: Aug 29 8:00 pm	Duration: 10 hrs 31 mins

Orange County 2 alerts

EXTREME HEAT WARNING (4 updates)
Areas affected: Orange County Inland
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 mins
Areas affected: Santa Ana Mountains and Foothills
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 mins
Areas affected: Santa Ana Mountains and Foothills
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 mins
Areas affected: Orange County Inland
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 mins

HEAT ADVISORY (2 updates)
Areas affected: Orange County Coastal
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 mins
Areas affected: Orange County Coastal
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 mins

San Diego County 2 alerts

EXTREME HEAT WARNING (8 updates)
Areas affected: Santa Ana Mountains and Foothills
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 mins
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 mins
Areas affected: San Diego County Mountains
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 mins
Areas affected: San Diego County Inland Valleys
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 mins
Areas affected: Santa Ana Mountains and Foothills
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 mins
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 mins
Areas affected: San Diego County Mountains
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 mins
Areas affected: San Diego County Inland Valleys
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 mins

HEAT ADVISORY (2 updates)
Areas affected: San Diego County Coastal Areas
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 mins
Areas affected: San Diego County Coastal Areas
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 mins

San Bernardino County

EXTREME HEAT WARNING (2 updates)
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 28 9:06 pm	Expired: Aug 29 6:15 am	Duration: 9 hrs 09 mins
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 29 5:20 am	Expired: Aug 29 2:30 pm	Duration: 9 hrs 10 mins

Santa Barbara County 2 alerts

WIND ADVISORY (4 updates)
Areas affected: Santa Ynez Mountains Western Range
Effective: Aug 28 11:16 am	Expired: Aug 29 6:00 am	Duration: 18 hrs 44 mins
Areas affected: Santa Barbara County Southwestern Coast
Effective: Aug 28 11:16 am	Expired: Aug 29 8:00 pm	Duration: 1 day 8 hrs 44 mins
Areas affected: Santa Barbara County Southwestern Coast
Effective: Aug 29 7:49 am	Expired: Aug 30 6:00 am	Duration: 22 hrs 11 mins
Areas affected: Santa Ynez Mountains Western Range
Effective: Aug 29 7:49 am	Expired: Aug 30 6:00 am	Duration: 22 hrs 11 mins

HEAT ADVISORY (6 updates)
Areas affected: 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 28 11:16 am	Expired: Aug 29 8:00 pm	Duration: 1 day 8 hrs 44 mins
Areas affected: Santa Barbara County Southwestern Coast
Effective: Aug 28 11:16 am	Expired: Aug 29 8:00 pm	Duration: 1 day 8 hrs 44 mins
Areas affected: Santa Clarita Valley; Santa Barbara County Southeastern Coast; 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: Aug 29 1:20 am	Expired: Aug 29 8:00 pm	Duration: 18 hrs 40 mins
Areas affected: Santa Barbara County Southwestern Coast
Effective: Aug 29 1:20 am	Expired: Aug 29 8:00 pm	Duration: 18 hrs 40 mins
Areas affected: Santa Barbara County Southwestern Coast
Effective: Aug 29 7:49 am	Expired: Aug 30 6:00 am	Duration: 22 hrs 11 mins
Areas affected: Santa Clarita Valley; Santa Barbara County Southeastern Coast; 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: Aug 29 7:49 am	Expired: Aug 29 8:00 pm	Duration: 12 hrs 11 mins

Ventura County

HEAT ADVISORY (4 updates)
Areas affected: 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 28 11:16 am	Expired: Aug 29 8:00 pm	Duration: 1 day 8 hrs 44 mins
Areas affected: Santa Clarita Valley; 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; Los Angeles County San Gabriel Valley
Effective: Aug 28 11:16 am	Expired: Aug 29 8:00 pm	Duration: 1 day 8 hrs 44 mins
Areas affected: Santa Clarita Valley; Santa Barbara County Southeastern Coast; 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: Aug 29 1:20 am	Expired: Aug 29 8:00 pm	Duration: 18 hrs 40 mins
Areas affected: Santa Clarita Valley; Santa Barbara County Southeastern Coast; 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: Aug 29 7:49 am	Expired: Aug 29 8:00 pm	Duration: 12 hrs 11 mins

Los Angeles County

DENSE FOG ADVISORY (2 updates)
Areas affected: North Bay Interior Valleys
Effective: Aug 29 5:04 am	Expired: Aug 29 9:00 am	Duration: 3 hrs 56 mins
Areas affected: North Bay Interior Valleys
Effective: Aug 29 8:26 am	Expired: Aug 29 10:00 am	Duration: 1 hr 34 mins

Marin County

DENSE FOG ADVISORY (2 updates)
Areas affected: North Bay Interior Valleys
Effective: Aug 29 5:04 am	Expired: Aug 29 9:00 am	Duration: 3 hrs 56 mins
Areas affected: North Bay Interior Valleys
Effective: Aug 29 8:26 am	Expired: Aug 29 10:00 am	Duration: 1 hr 34 mins

Napa County

DENSE FOG ADVISORY (2 updates)
Areas affected: North Bay Interior Valleys
Effective: Aug 29 5:04 am	Expired: Aug 29 9:00 am	Duration: 3 hrs 56 mins
Areas affected: North Bay Interior Valleys
Effective: Aug 29 8:26 am	Expired: Aug 29 10:00 am	Duration: 1 hr 34 mins

Sonoma County

DENSE FOG ADVISORY (2 updates)
Areas affected: North Bay Interior Valleys
Effective: Aug 29 5:04 am	Expired: Aug 29 9:00 am	Duration: 3 hrs 56 mins
Areas affected: North Bay Interior Valleys
Effective: Aug 29 8:26 am	Expired: Aug 29 10:00 am	Duration: 1 hr 34 mins

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