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Alert Archives for All California Counties
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55 total alerts issued on this day

Updates Every 15 Minutes
Spacer GifLast Update:January 21, 2026 - 8:00 am PDT
El Dorado County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Sacramento County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Placer County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Nevada County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Amador County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Butte County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Calaveras County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Colusa County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Glenn County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
San Joaquin County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Solano County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Stanislaus County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Sutter County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Tuolumne County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Yuba County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Yolo County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 20 10:56 pm Expired: Jan 21 12:00 pm Duration: 13 hrs   04 mins  
Dense fog has continued to lift and disperse over the last few
  Areas affected: Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley
Effective: Jan 21 11:39 am Expired: Jan 21 12:45 pm Duration: 1 hr   06 mins  
Fresno County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 20 9:51 pm Expired: Jan 21 6:00 am Duration: 8 hrs   09 mins  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 21 5:41 am Expired: Jan 21 12:00 pm Duration: 6 hrs   19 mins  
Kern County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 20 9:51 pm Expired: Jan 21 6:00 am Duration: 8 hrs   09 mins  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 21 5:41 am Expired: Jan 21 12:00 pm Duration: 6 hrs   19 mins  
Kings County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 20 9:51 pm Expired: Jan 21 6:00 am Duration: 8 hrs   09 mins  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 21 5:41 am Expired: Jan 21 12:00 pm Duration: 6 hrs   19 mins  
Madera County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 20 9:51 pm Expired: Jan 21 6:00 am Duration: 8 hrs   09 mins  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 21 5:41 am Expired: Jan 21 12:00 pm Duration: 6 hrs   19 mins  
Mariposa County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 20 9:51 pm Expired: Jan 21 6:00 am Duration: 8 hrs   09 mins  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 21 5:41 am Expired: Jan 21 12:00 pm Duration: 6 hrs   19 mins  
Merced County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 20 9:51 pm Expired: Jan 21 6:00 am Duration: 8 hrs   09 mins  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 21 5:41 am Expired: Jan 21 12:00 pm Duration: 6 hrs   19 mins  
Tulare County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 20 9:51 pm Expired: Jan 21 6:00 am Duration: 8 hrs   09 mins  
  Areas affected: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
Effective: Jan 21 5:41 am Expired: Jan 21 12:00 pm Duration: 6 hrs   19 mins  
Orange County   2 alerts
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: San Diego County Coastal Areas; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Jan 20 7:12 pm Expired: Jan 21 9:00 am Duration: 13 hrs   48 mins  
  Areas affected: San Diego County Coastal Areas; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Jan 21 2:13 am Expired: Jan 21 9:00 am Duration: 6 hrs   47 mins  
SPS.gif   AIR QUALITY ALERT  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; Riverside County Mountains; San Gorgonio Pass Near Banning; Orange County Coastal; Orange County Inland
Effective: Jan 21 11:07 am Expired: Jan 23 12:00 am Duration: 1 day   12 hrs   53 mins  
San Diego County
FGY.gif   DENSE FOG ADVISORY   (2 updates)
  Areas affected: San Diego County Coastal Areas; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Jan 20 7:12 pm Expired: Jan 21 9:00 am Duration: 13 hrs   48 mins  
  Areas affected: San Diego County Coastal Areas; San Diego County Inland Valleys; Orange County Coastal; Orange County Inland
Effective: Jan 21 2:13 am Expired: Jan 21 9:00 am Duration: 6 hrs   47 mins  
Riverside County   2 alerts
FGY.gif   DENSE FOG ADVISORY  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jan 21 2:13 am Expired: Jan 21 9:00 am Duration: 6 hrs   47 mins  
SPS.gif   AIR QUALITY ALERT  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; Riverside County Mountains; San Gorgonio Pass Near Banning; Orange County Coastal; Orange County Inland
Effective: Jan 21 11:07 am Expired: Jan 23 12:00 am Duration: 1 day   12 hrs   53 mins  
San Bernardino County   2 alerts
FGY.gif   DENSE FOG ADVISORY  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jan 21 2:13 am Expired: Jan 21 9:00 am Duration: 6 hrs   47 mins  
SPS.gif   AIR QUALITY ALERT  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; Riverside County Mountains; San Gorgonio Pass Near Banning; Orange County Coastal; Orange County Inland
Effective: Jan 21 11:07 am Expired: Jan 23 12:00 am Duration: 1 day   12 hrs   53 mins  


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