California County Alert Archives from the National Weather Service

Alert Archives for All California Counties

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Select a date: 13 total alerts issued on this day Updates Every 15 Minutes
Alert Summary \| Alert RSS Feed \| Alert Archives \| Icon key Last Update:September 16, 2025 - 7:00 am PDT

Monterey County

DENSE FOG ADVISORY (5 updates)
Areas affected: Southern Monterey Bay and Big Sur Coast
Effective: Sep 16 12:49 am	Expired: Sep 16 9:00 am	Duration: 8 hrs 11 mins
Areas affected: Southern Monterey Bay and Big Sur Coast
Effective: Sep 16 2:13 am	Expired: Sep 16 10:00 am	Duration: 7 hrs 47 mins
Areas affected: Northern Salinas Valley/Hollister Valley and Carmel Valley
Effective: Sep 16 2:13 am	Expired: Sep 16 10:00 am	Duration: 7 hrs 47 mins
Areas affected: Northern Salinas Valley/Hollister Valley and Carmel Valley; Southern Monterey Bay and Big Sur Coast
Effective: Sep 16 2:54 am	Expired: Sep 16 10:00 am	Duration: 7 hrs 06 mins
Areas affected: San Francisco Peninsula Coast; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Sep 16 9:44 am	Expired: Sep 16 10:45 am	Duration: 1 hr 01 min

San Benito County

DENSE FOG ADVISORY (3 updates)
Areas affected: Northern Salinas Valley/Hollister Valley and Carmel Valley
Effective: Sep 16 2:13 am	Expired: Sep 16 10:00 am	Duration: 7 hrs 47 mins
Areas affected: Northern Salinas Valley/Hollister Valley and Carmel Valley; Southern Monterey Bay and Big Sur Coast
Effective: Sep 16 2:54 am	Expired: Sep 16 10:00 am	Duration: 7 hrs 06 mins
Areas affected: San Francisco Peninsula Coast; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Sep 16 9:44 am	Expired: Sep 16 10:45 am	Duration: 1 hr 01 min

San Mateo County

DENSE FOG ADVISORY (2 updates)
Areas affected: San Francisco Peninsula Coast; Northern Monterey Bay
Effective: Sep 16 2:54 am	Expired: Sep 16 10:00 am	Duration: 7 hrs 06 mins
Areas affected: San Francisco Peninsula Coast; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Sep 16 9:44 am	Expired: Sep 16 10:45 am	Duration: 1 hr 01 min

Santa Cruz County

DENSE FOG ADVISORY (2 updates)
Areas affected: San Francisco Peninsula Coast; Northern Monterey Bay
Effective: Sep 16 2:54 am	Expired: Sep 16 10:00 am	Duration: 7 hrs 06 mins
Areas affected: San Francisco Peninsula Coast; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Sep 16 9:44 am	Expired: Sep 16 10:45 am	Duration: 1 hr 01 min

Ventura County

HEAT ADVISORY
Areas affected: Santa Clarita Valley; Ojai Valley; Central Ventura County Valleys; Malibu Coast; 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
Effective: Sep 16 9:47 am	Expired: Sep 16 7:00 pm	Duration: 9 hrs 13 mins

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