California County Alert Archives from the National Weather Service

Alert Archives for All California Counties

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Select a date: 55 total alerts issued on this day Updates Every 15 Minutes
Alert Summary \| Alert RSS Feed \| Alert Archives \| Icon key Last Update:July 22, 2026 - 7:00 am PDT

Imperial County

EXTREME HEAT WARNING (2 updates)
Areas affected: Parker Valley; Yuma; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 21 11:58 am	Expired: Jul 22 5:00 am	Duration: 17 hrs 02 mins
Areas affected: Parker Valley; Yuma; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 22 12:22 am	Expired: Jul 22 3:00 pm	Duration: 14 hrs 38 mins

Riverside County 2 alerts

EXTREME HEAT WARNING (5 updates)
Areas affected: Parker Valley; Yuma; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 21 11:58 am	Expired: Jul 22 5:00 am	Duration: 17 hrs 02 mins
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Jul 21 10:23 am	Expired: Jul 21 10:15 pm	Duration: 11 hrs 52 mins
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins
Areas affected: Parker Valley; Yuma; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 22 12:22 am	Expired: Jul 22 3:00 pm	Duration: 14 hrs 38 mins

HEAT ADVISORY (6 updates)
Areas affected: San Diego County Inland Valleys; Santa Ana Mountains and Foothills; Orange County Inland
Effective: Jul 21 10:23 am	Expired: Jul 21 10:15 pm	Duration: 11 hrs 52 mins
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jul 21 10:23 am	Expired: Jul 21 10:15 pm	Duration: 11 hrs 52 mins
Areas affected: San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains
Effective: Jul 21 10:23 am	Expired: Jul 21 10:15 pm	Duration: 11 hrs 52 mins
Areas affected: Santa Ana Mountains and Foothills
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins
Areas affected: San Bernardino County Mountains; Riverside County Mountains
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jul 22 12:10 am	Expired: Jul 22 12:25 am	Duration: 0 hrs 15 mins

Inyo County

EXTREME HEAT WARNING
Areas affected: Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Northwest Deserts; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side
Effective: Jul 21 1:12 pm	Expired: Jul 22 5:00 am	Duration: 15 hrs 48 mins

San Bernardino County 2 alerts

EXTREME HEAT WARNING (6 updates)
Areas affected: Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Northwest Deserts; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side
Effective: Jul 21 1:12 pm	Expired: Jul 22 5:00 am	Duration: 15 hrs 48 mins
Areas affected: Kofa; Central La Paz; Southeast Yuma County; Gila River Valley; Joshua Tree NP West; Joshua Tree NP East
Effective: Jul 21 11:58 am	Expired: Jul 22 5:00 am	Duration: 17 hrs 02 mins
Areas affected: Apple and Lucerne Valleys
Effective: Jul 21 10:23 am	Expired: Jul 21 10:15 pm	Duration: 11 hrs 52 mins
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins
Areas affected: Apple and Lucerne Valleys
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins
Areas affected: Kofa; Central La Paz; Southeast Yuma County; Gila River Valley; Joshua Tree NP West; Joshua Tree NP East
Effective: Jul 22 12:22 am	Expired: Jul 22 3:00 pm	Duration: 14 hrs 38 mins

HEAT ADVISORY (4 updates)
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jul 21 10:23 am	Expired: Jul 21 10:15 pm	Duration: 11 hrs 52 mins
Areas affected: San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains
Effective: Jul 21 10:23 am	Expired: Jul 21 10:15 pm	Duration: 11 hrs 52 mins
Areas affected: San Bernardino County Mountains; Riverside County Mountains
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jul 22 12:10 am	Expired: Jul 22 12:25 am	Duration: 0 hrs 15 mins

Kern County

EXTREME HEAT WATCH
Areas affected: Indian Wells Valley; Mojave Desert
Effective: Jul 21 6:32 pm	Expired: Jul 22 3:00 am	Duration: 8 hrs 28 mins

Orange County

HEAT ADVISORY (3 updates)
Areas affected: San Diego County Inland Valleys; Santa Ana Mountains and Foothills; Orange County Inland
Effective: Jul 21 10:23 am	Expired: Jul 21 10:15 pm	Duration: 11 hrs 52 mins
Areas affected: Santa Ana Mountains and Foothills
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins
Areas affected: Orange County Inland
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins

San Diego County 2 alerts

HEAT ADVISORY (6 updates)
Areas affected: San Diego County Inland Valleys; Santa Ana Mountains and Foothills; Orange County Inland
Effective: Jul 21 10:23 am	Expired: Jul 21 10:15 pm	Duration: 11 hrs 52 mins
Areas affected: San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains
Effective: Jul 21 10:23 am	Expired: Jul 21 10:15 pm	Duration: 11 hrs 52 mins
Areas affected: Santa Ana Mountains and Foothills
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins
Areas affected: San Diego County Mountains
Effective: Jul 22 12:10 am	Expired: Jul 22 12:25 am	Duration: 0 hrs 15 mins
Areas affected: San Diego County Coastal Areas
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins
Areas affected: San Diego County Inland Valleys
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins

EXTREME HEAT WARNING (3 updates)
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Jul 21 10:23 am	Expired: Jul 21 10:15 pm	Duration: 11 hrs 52 mins
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins
Areas affected: San Diego County Mountains
Effective: Jul 22 12:10 am	Expired: Jul 22 3:30 pm	Duration: 15 hrs 20 mins

San Luis Obispo County

HEAT ADVISORY (2 updates)
Areas affected: Cuyama Valley; Santa Clarita Valley; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Valley; 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; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Los Angeles County San Gabriel Valley
Effective: Jul 21 12:33 pm	Expired: Jul 22 12:45 am	Duration: 12 hrs 12 mins
Areas affected: Cuyama Valley; Santa Clarita Valley; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Valley; 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; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Los Angeles County San Gabriel Valley
Effective: Jul 22 12:28 am	Expired: Jul 22 12:30 pm	Duration: 12 hrs 02 mins

Santa Barbara County 2 alerts

HEAT ADVISORY (8 updates)
Areas affected: Cuyama Valley; Santa Clarita Valley; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Valley; 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; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Los Angeles County San Gabriel Valley
Effective: Jul 21 12:33 pm	Expired: Jul 22 12:45 am	Duration: 12 hrs 12 mins
Areas affected: Santa Ynez Mountains Western Range
Effective: Jul 21 12:33 pm	Expired: Jul 22 12:45 am	Duration: 12 hrs 12 mins
Areas affected: Santa Barbara County Southeastern Coast
Effective: Jul 21 12:33 pm	Expired: Jul 22 12:45 am	Duration: 12 hrs 12 mins
Areas affected: Santa Barbara County Southwestern Coast
Effective: Jul 21 12:33 pm	Expired: Jul 22 12:45 am	Duration: 12 hrs 12 mins
Areas affected: Cuyama Valley; Santa Clarita Valley; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Valley; 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; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Los Angeles County San Gabriel Valley
Effective: Jul 22 12:28 am	Expired: Jul 22 12:30 pm	Duration: 12 hrs 02 mins
Areas affected: Santa Barbara County Southwestern Coast
Effective: Jul 22 12:28 am	Expired: Jul 22 12:30 pm	Duration: 12 hrs 02 mins
Areas affected: Santa Barbara County Southeastern Coast
Effective: Jul 22 12:28 am	Expired: Jul 22 12:30 pm	Duration: 12 hrs 02 mins
Areas affected: Santa Ynez Mountains Western Range
Effective: Jul 22 12:28 am	Expired: Jul 22 12:30 pm	Duration: 12 hrs 02 mins

WIND ADVISORY (4 updates)
Areas affected: Santa Barbara County Southwestern Coast
Effective: Jul 21 12:33 pm	Expired: Jul 22 12:45 am	Duration: 12 hrs 12 mins
Areas affected: Santa Ynez Mountains Western Range
Effective: Jul 21 12:33 pm	Expired: Jul 22 12:45 am	Duration: 12 hrs 12 mins
Areas affected: Santa Barbara County Southwestern Coast
Effective: Jul 22 12:28 am	Expired: Jul 22 12:30 pm	Duration: 12 hrs 02 mins
Areas affected: Santa Ynez Mountains Western Range
Effective: Jul 22 12:28 am	Expired: Jul 22 12:30 pm	Duration: 12 hrs 02 mins

Ventura County

HEAT ADVISORY (4 updates)
Areas affected: Cuyama Valley; Santa Clarita Valley; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Valley; 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; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Los Angeles County San Gabriel Valley
Effective: Jul 21 12:33 pm	Expired: Jul 22 12:45 am	Duration: 12 hrs 12 mins
Areas affected: Ventura County Inland Coast; Los Angeles County Inland Coast including Downtown Los Angeles
Effective: Jul 21 12:33 pm	Expired: Jul 22 12:45 am	Duration: 12 hrs 12 mins
Areas affected: Cuyama Valley; Santa Clarita Valley; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Valley; 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; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Los Angeles County San Gabriel Valley
Effective: Jul 22 12:28 am	Expired: Jul 22 12:30 pm	Duration: 12 hrs 02 mins
Areas affected: Ventura County Inland Coast; Los Angeles County Inland Coast including Downtown Los Angeles
Effective: Jul 22 12:28 am	Expired: Jul 22 12:30 pm	Duration: 12 hrs 02 mins

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