Northern California County Alert Archives from the National Weather Service

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Alert Archives for All California Counties

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Select a date: 52 total alerts issued on this day Updates Every 15 Minutes
Alert Summary \| Alert RSS Feed \| Alert Archives \| Icon key Last Update:July 27, 2026 - 7:00 am PDT

Humboldt County

BEACH HAZARDS STATEMENT
Areas affected: Southwestern Humboldt; Coastal Mendocino
Effective: Jul 26 9:07 pm	Expired: Jul 27 12:00 pm	Duration: 14 hrs 53 mins

Mendocino County

BEACH HAZARDS STATEMENT
Areas affected: Southwestern Humboldt; Coastal Mendocino
Effective: Jul 26 9:07 pm	Expired: Jul 27 12:00 pm	Duration: 14 hrs 53 mins

Imperial County

EXTREME HEAT WARNING (4 updates)
Areas affected: Parker Valley; Yuma; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 26 11:59 am	Expired: Jul 27 4:00 am	Duration: 16 hrs 01 min
Areas affected: Kofa; Central La Paz; Southeast Yuma County; Gila River Valley; Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Chiriaco Summit
Effective: Jul 26 11:59 am	Expired: Jul 27 4:00 am	Duration: 16 hrs 01 min
Areas affected: Kofa; Central La Paz; Southeast Yuma County; Gila River Valley; Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Chiriaco Summit
Effective: Jul 27 12:48 am	Expired: Jul 27 5:00 pm	Duration: 16 hrs 12 mins
Areas affected: Parker Valley; Yuma; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 27 12:48 am	Expired: Jul 27 5:00 pm	Duration: 16 hrs 12 mins

Riverside County 2 alerts

EXTREME HEAT WARNING (5 updates)
Areas affected: Parker Valley; Yuma; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 26 11:59 am	Expired: Jul 27 4:00 am	Duration: 16 hrs 01 min
Areas affected: Kofa; Central La Paz; Southeast Yuma County; Gila River Valley; Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Chiriaco Summit
Effective: Jul 26 11:59 am	Expired: Jul 27 4:00 am	Duration: 16 hrs 01 min
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins
Areas affected: Kofa; Central La Paz; Southeast Yuma County; Gila River Valley; Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Chiriaco Summit
Effective: Jul 27 12:48 am	Expired: Jul 27 5:00 pm	Duration: 16 hrs 12 mins
Areas affected: Parker Valley; Yuma; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 27 12:48 am	Expired: Jul 27 5:00 pm	Duration: 16 hrs 12 mins

HEAT ADVISORY (3 updates)
Areas affected: Santa Ana Mountains and Foothills
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins
Areas affected: San Bernardino County Mountains; Riverside County Mountains
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins

San Bernardino County 2 alerts

EXTREME HEAT WARNING (4 updates)
Areas affected: Kofa; Central La Paz; Southeast Yuma County; Gila River Valley; Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Chiriaco Summit
Effective: Jul 26 11:59 am	Expired: Jul 27 4:00 am	Duration: 16 hrs 01 min
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 26 3:42 pm	Expired: Jul 27 5:00 am	Duration: 13 hrs 18 mins
Areas affected: Apple and Lucerne Valleys
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins
Areas affected: Kofa; Central La Paz; Southeast Yuma County; Gila River Valley; Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Chiriaco Summit
Effective: Jul 27 12:48 am	Expired: Jul 27 5:00 pm	Duration: 16 hrs 12 mins

HEAT ADVISORY (2 updates)
Areas affected: San Bernardino County Mountains; Riverside County Mountains
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 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 26 3:42 pm	Expired: Jul 27 5:00 am	Duration: 13 hrs 18 mins

Kern County

EXTREME HEAT WARNING
Areas affected: Indian Wells Valley; Mojave Desert
Effective: Jul 26 8:16 pm	Expired: Jul 27 5:15 am	Duration: 8 hrs 59 mins

Los Angeles County

BEACH HAZARDS STATEMENT
Areas affected: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Jul 26 2:17 pm	Expired: Jul 27 3:00 pm	Duration: 1 day 0 hrs 43 mins

Marin County

BEACH HAZARDS STATEMENT
Areas affected: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Jul 26 2:17 pm	Expired: Jul 27 3:00 pm	Duration: 1 day 0 hrs 43 mins

Monterey County

BEACH HAZARDS STATEMENT
Areas affected: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Jul 26 2:17 pm	Expired: Jul 27 3:00 pm	Duration: 1 day 0 hrs 43 mins

San Francisco County

BEACH HAZARDS STATEMENT
Areas affected: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Jul 26 2:17 pm	Expired: Jul 27 3:00 pm	Duration: 1 day 0 hrs 43 mins

San Mateo County

BEACH HAZARDS STATEMENT
Areas affected: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Jul 26 2:17 pm	Expired: Jul 27 3:00 pm	Duration: 1 day 0 hrs 43 mins

Santa Cruz County

BEACH HAZARDS STATEMENT
Areas affected: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Jul 26 2:17 pm	Expired: Jul 27 3:00 pm	Duration: 1 day 0 hrs 43 mins

Sonoma County

BEACH HAZARDS STATEMENT
Areas affected: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Jul 26 2:17 pm	Expired: Jul 27 3:00 pm	Duration: 1 day 0 hrs 43 mins

Orange County 2 alerts

BEACH HAZARDS STATEMENT
Areas affected: San Diego County Coastal Areas; Orange County Coastal
Effective: Jul 26 10:55 pm	Expired: Jul 27 3:00 pm	Duration: 16 hrs 05 mins

HEAT ADVISORY (3 updates)
Areas affected: Orange County Inland
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins
Areas affected: Orange County Coastal
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins
Areas affected: Santa Ana Mountains and Foothills
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins

San Diego County 3 alerts

BEACH HAZARDS STATEMENT
Areas affected: San Diego County Coastal Areas; Orange County Coastal
Effective: Jul 26 10:55 pm	Expired: Jul 27 3:00 pm	Duration: 16 hrs 05 mins

HEAT ADVISORY (4 updates)
Areas affected: Santa Ana Mountains and Foothills
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins
Areas affected: San Diego County Coastal Areas
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins
Areas affected: San Diego County Inland Valleys
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins
Areas affected: San Diego County Mountains
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins

EXTREME HEAT WARNING
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Jul 26 9:50 pm	Expired: Jul 27 6:00 am	Duration: 8 hrs 10 mins

San Luis Obispo County 2 alerts

HEAT ADVISORY
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 26 11:26 am	Expired: Jul 27 3:00 am	Duration: 15 hrs 34 mins

BEACH HAZARDS STATEMENT
Areas affected: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches
Effective: Jul 25 1:50 pm	Expired: Jul 27 4:00 pm	Duration: 2 days 2 hrs 10 mins

Santa Barbara County 3 alerts

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 26 11:26 am	Expired: Jul 27 3:00 am	Duration: 15 hrs 34 mins
Areas affected: Santa Ynez Mountains Western Range
Effective: Jul 26 11:26 am	Expired: Jul 27 3:00 am	Duration: 15 hrs 34 mins
Areas affected: Santa Barbara County Southwestern Coast
Effective: Jul 26 11:26 am	Expired: Jul 27 3:00 am	Duration: 15 hrs 34 mins
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: Jul 26 11:26 am	Expired: Jul 27 3:00 am	Duration: 15 hrs 34 mins

BEACH HAZARDS STATEMENT
Areas affected: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches
Effective: Jul 25 1:50 pm	Expired: Jul 27 4:00 pm	Duration: 2 days 2 hrs 10 mins

WIND ADVISORY (2 updates)
Areas affected: Santa Barbara County Southwestern Coast
Effective: Jul 26 11:26 am	Expired: Jul 27 3:00 am	Duration: 15 hrs 34 mins
Areas affected: Santa Ynez Mountains Western Range
Effective: Jul 26 11:26 am	Expired: Jul 27 3:00 am	Duration: 15 hrs 34 mins

Ventura County 3 alerts

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 26 11:26 am	Expired: Jul 27 3:00 am	Duration: 15 hrs 34 mins
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: Jul 26 11:26 am	Expired: Jul 27 3:00 am	Duration: 15 hrs 34 mins

BEACH HAZARDS STATEMENT
Areas affected: Ventura County Beaches; Malibu Coast; Los Angeles County Beaches
Effective: Jul 25 1:50 pm	Expired: Jul 27 4:00 pm	Duration: 2 days 2 hrs 10 mins

AIR QUALITY ALERT
Areas affected: Eastern San Fernando Valley; Eastern San Gabriel Mountains; Interstate 5 Corridor; Los Angeles County San Gabriel Valley; Santa Clarita Valley; Santa Susana Mountains; Western San Fernando Valley; Western San Gabriel Mountains and Highway 14 Corridor
Effective: Jul 22 5:20 pm	Expired: Jul 27 8:00 pm	Duration: 5 days 2 hrs 40 mins

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