California County Alert Archives from the National Weather Service

Alert Archives for All California Counties

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Select a date: 14 total alerts issued on this day Updates Every 15 Minutes
Alert Summary \| Alert RSS Feed \| Alert Archives \| Icon key Last Update:July 4, 2026 - 7:00 am PDT

Fresno County

LAKE WIND ADVISORY (3 updates)
Areas affected: West Side Mountains north of 198
Effective: Jul 3 10:35 pm	Expired: Jul 4 7:00 am	Duration: 8 hrs 25 mins
Areas affected: West Side Mountains north of 198
Effective: Jul 4 6:31 am	Expired: Jul 4 3:00 pm	Duration: 8 hrs 29 mins
Areas affected: West Side Mountains north of 198
Effective: Jul 4 2:41 pm	Expired: Jul 4 11:00 pm	Duration: 8 hrs 19 mins

Merced County

LAKE WIND ADVISORY (3 updates)
Areas affected: West Side Mountains north of 198
Effective: Jul 3 10:35 pm	Expired: Jul 4 7:00 am	Duration: 8 hrs 25 mins
Areas affected: West Side Mountains north of 198
Effective: Jul 4 6:31 am	Expired: Jul 4 3:00 pm	Duration: 8 hrs 29 mins
Areas affected: West Side Mountains north of 198
Effective: Jul 4 2:41 pm	Expired: Jul 4 11:00 pm	Duration: 8 hrs 19 mins

Imperial County

EXTREME HEAT WATCH (2 updates)
Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Gila River Valley; Imperial County Southwest; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 3 11:39 pm	Expired: Jul 4 4:00 pm	Duration: 16 hrs 21 mins
Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Gila River Valley; Imperial County Southwest; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 4 11:28 am	Expired: Jul 5 3:00 am	Duration: 15 hrs 32 mins

Riverside County 2 alerts

EXTREME HEAT WATCH (2 updates)
Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Gila River Valley; Imperial County Southwest; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 3 11:39 pm	Expired: Jul 4 4:00 pm	Duration: 16 hrs 21 mins
Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Gila River Valley; Imperial County Southwest; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 4 11:28 am	Expired: Jul 5 3:00 am	Duration: 15 hrs 32 mins

AIR QUALITY ALERT
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; Orange County Coastal; Orange County Inland
Effective: Jul 4 9:20 am	Expired: Jul 5 3:00 pm	Duration: 1 day 5 hrs 40 mins

Orange County

AIR QUALITY ALERT
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; Orange County Coastal; Orange County Inland
Effective: Jul 4 9:20 am	Expired: Jul 5 3:00 pm	Duration: 1 day 5 hrs 40 mins

San Bernardino County

AIR QUALITY ALERT
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; Orange County Coastal; Orange County Inland
Effective: Jul 4 9:20 am	Expired: Jul 5 3:00 pm	Duration: 1 day 5 hrs 40 mins

Ventura County

AIR QUALITY ALERT
Areas affected: Calabasas and Agoura Hills; Eastern San Fernando Valley; Eastern Santa Monica Mountains Recreational Area; Interstate 5 Corridor; Los Angeles County Beaches; Los Angeles County Inland Coast including Downtown Los Angeles; Los Angeles County San Gabriel Valley; Malibu Coast; Palos Verdes Hills; Santa Clarita Valley; Santa Susana Mountains; Western San Fernando Valley; Western Santa Monica Mountains Recreational Area
Effective: Jul 4 10:44 am	Expired: Jul 5 10:45 am	Duration: 1 day 0 hrs 01 min

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