El Dorado County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Sacramento County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Placer County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Nevada County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Amador County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Butte County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Calaveras County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Colusa County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Glenn County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

San Joaquin County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Shasta County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Solano County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Stanislaus County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Sutter County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Tehama County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Tuolumne County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Yuba County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Yolo County

DENSE FOG ADVISORY   Areas affected: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley Effective: Dec 4 10:12 pm Expired: Dec 5 11:00 am Duration: 12 hrs   48 mins

Alameda County   3 alerts

COASTAL FLOOD ADVISORY   (3 updates) Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 4 12:02 pm Expired: Dec 5 5:00 am Duration: 16 hrs   58 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 4:43 am Expired: Dec 5 3:00 pm Duration: 10 hrs   17 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 12:49 pm Expired: Dec 6 5:00 am Duration: 16 hrs   11 mins

COLD WEATHER ADVISORY   (2 updates) Areas affected: North Bay Interior Valleys; East Bay Interior Valleys Effective: Dec 5 1:22 am Expired: Dec 5 8:00 am Duration: 6 hrs   38 mins   Areas affected: East Bay Interior Valleys Effective: Dec 5 7:04 am Expired: Dec 5 11:00 am Duration: 3 hrs   56 mins

DENSE FOG ADVISORY   (2 updates) Areas affected: East Bay Interior Valleys Effective: Dec 5 7:04 am Expired: Dec 5 11:00 am Duration: 3 hrs   56 mins   Areas affected: East Bay Interior Valleys Effective: Dec 5 7:51 am Expired: Dec 5 11:00 am Duration: 3 hrs   09 mins

Contra Costa County   3 alerts

COASTAL FLOOD ADVISORY   (3 updates) Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 4 12:02 pm Expired: Dec 5 5:00 am Duration: 16 hrs   58 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 4:43 am Expired: Dec 5 3:00 pm Duration: 10 hrs   17 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 12:49 pm Expired: Dec 6 5:00 am Duration: 16 hrs   11 mins

COLD WEATHER ADVISORY   (2 updates) Areas affected: North Bay Interior Valleys; East Bay Interior Valleys Effective: Dec 5 1:22 am Expired: Dec 5 8:00 am Duration: 6 hrs   38 mins   Areas affected: East Bay Interior Valleys Effective: Dec 5 7:04 am Expired: Dec 5 11:00 am Duration: 3 hrs   56 mins

DENSE FOG ADVISORY   (2 updates) Areas affected: East Bay Interior Valleys Effective: Dec 5 7:04 am Expired: Dec 5 11:00 am Duration: 3 hrs   56 mins   Areas affected: East Bay Interior Valleys Effective: Dec 5 7:51 am Expired: Dec 5 11:00 am Duration: 3 hrs   09 mins

Los Angeles County   2 alerts

COASTAL FLOOD ADVISORY   (3 updates) Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 4 12:02 pm Expired: Dec 5 5:00 am Duration: 16 hrs   58 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 4:43 am Expired: Dec 5 3:00 pm Duration: 10 hrs   17 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 12:49 pm Expired: Dec 6 5:00 am Duration: 16 hrs   11 mins

COLD WEATHER ADVISORY   (3 updates) Areas affected: North Bay Interior Valleys; East Bay Interior Valleys Effective: Dec 5 1:22 am Expired: Dec 5 8:00 am Duration: 6 hrs   38 mins   Areas affected: North Bay Interior Valleys; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park Effective: Dec 5 7:04 am Expired: Dec 5 8:15 am Duration: 1 hr   11 mins   Areas affected: Marin Coastal Range; North Bay Interior Mountains; North Bay Interior Valleys Effective: Dec 5 8:38 pm Expired: Dec 6 8:00 am Duration: 11 hrs   22 mins

Marin County   2 alerts

COASTAL FLOOD ADVISORY   (3 updates) Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 4 12:02 pm Expired: Dec 5 5:00 am Duration: 16 hrs   58 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 4:43 am Expired: Dec 5 3:00 pm Duration: 10 hrs   17 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 12:49 pm Expired: Dec 6 5:00 am Duration: 16 hrs   11 mins

COLD WEATHER ADVISORY   (3 updates) Areas affected: North Bay Interior Valleys; East Bay Interior Valleys Effective: Dec 5 1:22 am Expired: Dec 5 8:00 am Duration: 6 hrs   38 mins   Areas affected: North Bay Interior Valleys; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park Effective: Dec 5 7:04 am Expired: Dec 5 8:15 am Duration: 1 hr   11 mins   Areas affected: Marin Coastal Range; North Bay Interior Mountains; North Bay Interior Valleys Effective: Dec 5 8:38 pm Expired: Dec 6 8:00 am Duration: 11 hrs   22 mins

Monterey County   2 alerts

COASTAL FLOOD ADVISORY   (3 updates) Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 4 12:02 pm Expired: Dec 5 5:00 am Duration: 16 hrs   58 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 4:43 am Expired: Dec 5 3:00 pm Duration: 10 hrs   17 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 12:49 pm Expired: Dec 6 5:00 am Duration: 16 hrs   11 mins

COLD WEATHER ADVISORY   (3 updates) Areas affected: Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park Effective: Dec 4 5:06 pm Expired: Dec 5 8:00 am Duration: 14 hrs   54 mins   Areas affected: Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park Effective: Dec 5 1:22 am Expired: Dec 5 8:00 am Duration: 6 hrs   38 mins   Areas affected: North Bay Interior Valleys; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park Effective: Dec 5 7:04 am Expired: Dec 5 8:15 am Duration: 1 hr   11 mins

Napa County   2 alerts

COASTAL FLOOD ADVISORY   (3 updates) Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 4 12:02 pm Expired: Dec 5 5:00 am Duration: 16 hrs   58 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 4:43 am Expired: Dec 5 3:00 pm Duration: 10 hrs   17 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 12:49 pm Expired: Dec 6 5:00 am Duration: 16 hrs   11 mins

COLD WEATHER ADVISORY   (3 updates) Areas affected: North Bay Interior Valleys; East Bay Interior Valleys Effective: Dec 5 1:22 am Expired: Dec 5 8:00 am Duration: 6 hrs   38 mins   Areas affected: North Bay Interior Valleys; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park Effective: Dec 5 7:04 am Expired: Dec 5 8:15 am Duration: 1 hr   11 mins   Areas affected: Marin Coastal Range; North Bay Interior Mountains; North Bay Interior Valleys Effective: Dec 5 8:38 pm Expired: Dec 6 8:00 am Duration: 11 hrs   22 mins

San Francisco County

COASTAL FLOOD ADVISORY   (3 updates) Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 4 12:02 pm Expired: Dec 5 5:00 am Duration: 16 hrs   58 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 4:43 am Expired: Dec 5 3:00 pm Duration: 10 hrs   17 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 12:49 pm Expired: Dec 6 5:00 am Duration: 16 hrs   11 mins

San Mateo County

COASTAL FLOOD ADVISORY   (3 updates) Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 4 12:02 pm Expired: Dec 5 5:00 am Duration: 16 hrs   58 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 4:43 am Expired: Dec 5 3:00 pm Duration: 10 hrs   17 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 12:49 pm Expired: Dec 6 5:00 am Duration: 16 hrs   11 mins

Santa Clara County

COASTAL FLOOD ADVISORY   (3 updates) Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 4 12:02 pm Expired: Dec 5 5:00 am Duration: 16 hrs   58 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 4:43 am Expired: Dec 5 3:00 pm Duration: 10 hrs   17 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 12:49 pm Expired: Dec 6 5:00 am Duration: 16 hrs   11 mins

Sonoma County   2 alerts

COASTAL FLOOD ADVISORY   (3 updates) Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 4 12:02 pm Expired: Dec 5 5:00 am Duration: 16 hrs   58 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 4:43 am Expired: Dec 5 3:00 pm Duration: 10 hrs   17 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 12:49 pm Expired: Dec 6 5:00 am Duration: 16 hrs   11 mins

COLD WEATHER ADVISORY   (3 updates) Areas affected: North Bay Interior Valleys; East Bay Interior Valleys Effective: Dec 5 1:22 am Expired: Dec 5 8:00 am Duration: 6 hrs   38 mins   Areas affected: North Bay Interior Valleys; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park Effective: Dec 5 7:04 am Expired: Dec 5 8:15 am Duration: 1 hr   11 mins   Areas affected: Marin Coastal Range; North Bay Interior Mountains; North Bay Interior Valleys Effective: Dec 5 8:38 pm Expired: Dec 6 8:00 am Duration: 11 hrs   22 mins

Humboldt County

COASTAL FLOOD ADVISORY   (5 updates) Areas affected: Northern Humboldt Coast Effective: Dec 4 8:15 pm Expired: Dec 5 4:15 am Duration: 8 hrs   00 mins   Areas affected: Northern Humboldt Coast Effective: Dec 5 1:31 am Expired: Dec 5 9:45 am Duration: 8 hrs   14 mins   Areas affected: Northern Humboldt Coast Effective: Dec 5 9:30 am Expired: Dec 5 12:00 pm Duration: 2 hrs   30 mins   Areas affected: Northern Humboldt Coast Effective: Dec 5 12:12 pm Expired: Dec 5 8:15 pm Duration: 8 hrs   03 mins   Areas affected: Northern Humboldt Coast Effective: Dec 5 7:15 pm Expired: Dec 6 4:15 am Duration: 9 hrs   00 mins

Mono County

AVALANCHE WATCH   AVAREV Areas affected: Mono Effective: Dec 4 12:50 am Expired: Dec 5 1:00 am Duration: 1 day   0 hrs   10 mins

San Benito County

COLD WEATHER ADVISORY   (3 updates) Areas affected: Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park Effective: Dec 4 5:06 pm Expired: Dec 5 8:00 am Duration: 14 hrs   54 mins   Areas affected: Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park Effective: Dec 5 1:22 am Expired: Dec 5 8:00 am Duration: 6 hrs   38 mins   Areas affected: North Bay Interior Valleys; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park Effective: Dec 5 7:04 am Expired: Dec 5 8:15 am Duration: 1 hr   11 mins

Orange County   2 alerts

BEACH HAZARDS STATEMENT   (2 updates) Areas affected: San Diego County Coastal Areas; Orange County Coastal Effective: Dec 4 9:54 pm Expired: Dec 5 6:15 am Duration: 8 hrs   21 mins   Areas affected: San Diego County Coastal Areas; Orange County Coastal Effective: Dec 5 1:32 am Expired: Dec 5 10:00 am Duration: 8 hrs   28 mins

AIR QUALITY ALERT   Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; Riverside County Mountains; Santa Ana Mountains and Foothills; San Gorgonio Pass Near Banning; Orange County Coastal; Orange County Inland Effective: Dec 5 12:51 pm Expired: Dec 7 12:00 am Duration: 1 day   11 hrs   09 mins

San Diego County   2 alerts

BEACH HAZARDS STATEMENT   (2 updates) Areas affected: San Diego County Coastal Areas; Orange County Coastal Effective: Dec 4 9:54 pm Expired: Dec 5 6:15 am Duration: 8 hrs   21 mins   Areas affected: San Diego County Coastal Areas; Orange County Coastal Effective: Dec 5 1:32 am Expired: Dec 5 10:00 am Duration: 8 hrs   28 mins

AIR QUALITY ALERT   Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; Riverside County Mountains; Santa Ana Mountains and Foothills; San Gorgonio Pass Near Banning; Orange County Coastal; Orange County Inland Effective: Dec 5 12:51 pm Expired: Dec 7 12:00 am Duration: 1 day   11 hrs   09 mins

San Luis Obispo County

FREEZE WARNING   Areas affected: Southern Salinas Valley; San Luis Obispo County Interior Valleys; Antelope Valley Effective: Dec 4 7:19 pm Expired: Dec 5 8:00 am Duration: 12 hrs   41 mins

Santa Barbara County

BEACH HAZARDS STATEMENT   (3 updates) Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Malibu Coast; Los Angeles County Beaches Effective: Dec 4 11:58 am Expired: Dec 5 3:00 am Duration: 15 hrs   02 mins   Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Malibu Coast; Los Angeles County Beaches Effective: Dec 5 1:44 am Expired: Dec 5 11:00 am Duration: 9 hrs   16 mins   Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Malibu Coast; Los Angeles County Beaches Effective: Dec 5 12:37 pm Expired: Dec 6 11:00 am Duration: 22 hrs   23 mins

Ventura County   3 alerts

FROST ADVISORY   Areas affected: Ojai Valley Effective: Dec 4 7:19 pm Expired: Dec 5 8:00 am Duration: 12 hrs   41 mins

BEACH HAZARDS STATEMENT   (3 updates) Areas affected: Ventura County Beaches Effective: Dec 4 11:58 am Expired: Dec 5 3:00 am Duration: 15 hrs   02 mins   Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Malibu Coast; Los Angeles County Beaches Effective: Dec 5 1:44 am Expired: Dec 5 11:00 am Duration: 9 hrs   16 mins   Areas affected: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Malibu Coast; Los Angeles County Beaches Effective: Dec 5 12:37 pm Expired: Dec 6 11:00 am Duration: 22 hrs   23 mins

AIR QUALITY ALERT   Areas affected: Calabasas and Agoura Hills; Catalina and Santa Barbara Islands; Eastern San Fernando Valley; Eastern Santa Monica Mountains Recreational Area; 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: Dec 5 12:33 pm Expired: Dec 7 12:00 am Duration: 1 day   11 hrs   27 mins

Santa Cruz County

COASTAL FLOOD ADVISORY   (3 updates) Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 4 12:02 pm Expired: Dec 5 5:00 am Duration: 16 hrs   58 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 4:43 am Expired: Dec 5 3:00 pm Duration: 10 hrs   17 mins   Areas affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast Effective: Dec 5 12:49 pm Expired: Dec 6 5:00 am Duration: 16 hrs   11 mins

Kern County

DENSE FOG ADVISORY   (9 updates) Areas affected: Bakersfield Effective: Dec 5 1:58 am Expired: Dec 5 10:00 am Duration: 8 hrs   02 mins   Areas affected: South End San Joaquin Valley; Grapevine Effective: Dec 5 7:58 am Expired: Dec 5 10:00 am Duration: 2 hrs   02 mins   Areas affected: Bakersfield Effective: Dec 5 7:58 am Expired: Dec 5 10:00 am Duration: 2 hrs   02 mins   Areas affected: Bakersfield; South End San Joaquin Valley; Grapevine Effective: Dec 5 8:48 am Expired: Dec 5 11:00 am Duration: 2 hrs   12 mins   Areas affected: Bakersfield; South End San Joaquin Valley; Grapevine Effective: Dec 5 9:18 am Expired: Dec 5 11:00 am Duration: 1 hr   42 mins   Areas affected: Bakersfield; South End San Joaquin Valley; Grapevine Effective: Dec 5 10:24 am Expired: Dec 5 1:00 pm Duration: 2 hrs   36 mins   Areas affected: Grapevine Effective: Dec 5 12:53 pm Expired: Dec 5 3:00 pm Duration: 2 hrs   07 mins   Areas affected: Grapevine Effective: Dec 5 2:55 pm Expired: Dec 5 7:00 pm Duration: 4 hrs   05 mins   Areas affected: Grapevine Effective: Dec 5 6:45 pm Expired: Dec 6 4:00 am Duration: 9 hrs   15 mins

Mendocino County

FROST ADVISORY   Areas affected: Southwestern Mendocino Interior; Southeastern Mendocino Interior Effective: Dec 5 6:30 am Expired: Dec 5 8:00 am Duration: 1 hr   30 mins

Fresno County

DENSE FOG ADVISORY   (5 updates) Areas affected: West Side Mountains north of 198 Effective: Dec 5 9:18 am Expired: Dec 5 1:00 pm Duration: 3 hrs   42 mins   Areas affected: West Side Mountains north of 198 Effective: Dec 5 10:24 am Expired: Dec 5 1:00 pm Duration: 2 hrs   36 mins   Areas affected: West Side Mountains north of 198 Effective: Dec 5 12:53 pm Expired: Dec 5 3:00 pm Duration: 2 hrs   07 mins   Areas affected: West Side Mountains north of 198 Effective: Dec 5 2:55 pm Expired: Dec 5 7:00 pm Duration: 4 hrs   05 mins   Areas affected: West Side Mountains north of 198 Effective: Dec 5 6:45 pm Expired: Dec 6 4:00 am Duration: 9 hrs   15 mins

Merced County

DENSE FOG ADVISORY   (5 updates) Areas affected: West Side Mountains north of 198 Effective: Dec 5 9:18 am Expired: Dec 5 1:00 pm Duration: 3 hrs   42 mins   Areas affected: West Side Mountains north of 198 Effective: Dec 5 10:24 am Expired: Dec 5 1:00 pm Duration: 2 hrs   36 mins   Areas affected: West Side Mountains north of 198 Effective: Dec 5 12:53 pm Expired: Dec 5 3:00 pm Duration: 2 hrs   07 mins   Areas affected: West Side Mountains north of 198 Effective: Dec 5 2:55 pm Expired: Dec 5 7:00 pm Duration: 4 hrs   05 mins   Areas affected: West Side Mountains north of 198 Effective: Dec 5 6:45 pm Expired: Dec 6 4:00 am Duration: 9 hrs   15 mins

Riverside County

AIR QUALITY ALERT   Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; Riverside County Mountains; Santa Ana Mountains and Foothills; San Gorgonio Pass Near Banning; Orange County Coastal; Orange County Inland Effective: Dec 5 12:51 pm Expired: Dec 7 12:00 am Duration: 1 day   11 hrs   09 mins

San Bernardino County

AIR QUALITY ALERT   Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; Riverside County Mountains; Santa Ana Mountains and Foothills; San Gorgonio Pass Near Banning; Orange County Coastal; Orange County Inland Effective: Dec 5 12:51 pm Expired: Dec 7 12:00 am Duration: 1 day   11 hrs   09 mins