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

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   (2 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

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   (2 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

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   (2 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

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: 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

Marin County   2 alerts

COASTAL FLOOD ADVISORY   (2 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

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: 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

Monterey County   2 alerts

COASTAL FLOOD ADVISORY   (2 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

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   (2 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

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: 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

San Francisco County

COASTAL FLOOD ADVISORY   (2 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

San Mateo County

COASTAL FLOOD ADVISORY   (2 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

Santa Clara County

COASTAL FLOOD ADVISORY   (2 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

Sonoma County   2 alerts

COASTAL FLOOD ADVISORY   (2 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

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: 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

Humboldt County

COASTAL FLOOD ADVISORY   (4 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

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

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

San Diego County

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

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   (2 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

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

Santa Cruz County

COASTAL FLOOD ADVISORY   (2 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

Ventura County   2 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   (2 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

Kern County

DENSE FOG ADVISORY   (6 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

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   (2 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

Merced County

DENSE FOG ADVISORY   (2 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