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

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Spacer GifLast Update:May 10, 2026 - 7:00 am PDT
Butte County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: Eastern Glenn County; Butte County Below 1000 ft; Eastern Colusa County; Western Stanislaus County Below 1000 ft Including Interstate 5; Central Stanislaus County Including Modesto Metro
Effective: May 9 10:42 am Expired: May 10 4:00 pm Duration: 1 day   5 hrs   18 mins  
  Areas affected: Eastern Glenn County; Butte County Below 1000 ft; Eastern Colusa County; Western Stanislaus County Below 1000 ft Including Interstate 5; Central Stanislaus County Including Modesto Metro
Effective: May 10 10:27 am Expired: May 11 4:00 pm Duration: 1 day   5 hrs   33 mins  
Colusa County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: Eastern Glenn County; Butte County Below 1000 ft; Eastern Colusa County; Western Stanislaus County Below 1000 ft Including Interstate 5; Central Stanislaus County Including Modesto Metro
Effective: May 9 10:42 am Expired: May 10 4:00 pm Duration: 1 day   5 hrs   18 mins  
  Areas affected: Eastern Glenn County; Butte County Below 1000 ft; Eastern Colusa County; Western Stanislaus County Below 1000 ft Including Interstate 5; Central Stanislaus County Including Modesto Metro
Effective: May 10 10:27 am Expired: May 11 4:00 pm Duration: 1 day   5 hrs   33 mins  
Glenn County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: Eastern Glenn County; Butte County Below 1000 ft; Eastern Colusa County; Western Stanislaus County Below 1000 ft Including Interstate 5; Central Stanislaus County Including Modesto Metro
Effective: May 9 10:42 am Expired: May 10 4:00 pm Duration: 1 day   5 hrs   18 mins  
  Areas affected: Eastern Glenn County; Butte County Below 1000 ft; Eastern Colusa County; Western Stanislaus County Below 1000 ft Including Interstate 5; Central Stanislaus County Including Modesto Metro
Effective: May 10 10:27 am Expired: May 11 4:00 pm Duration: 1 day   5 hrs   33 mins  
Stanislaus County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: Eastern Glenn County; Butte County Below 1000 ft; Eastern Colusa County; Western Stanislaus County Below 1000 ft Including Interstate 5; Central Stanislaus County Including Modesto Metro
Effective: May 9 10:42 am Expired: May 10 4:00 pm Duration: 1 day   5 hrs   18 mins  
  Areas affected: Eastern Glenn County; Butte County Below 1000 ft; Eastern Colusa County; Western Stanislaus County Below 1000 ft Including Interstate 5; Central Stanislaus County Including Modesto Metro
Effective: May 10 10:27 am Expired: May 11 4:00 pm Duration: 1 day   5 hrs   33 mins  
Fresno County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 9 7:31 pm Expired: May 10 4:00 am Duration: 8 hrs   29 mins  
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 10 3:54 am Expired: May 10 12:00 pm Duration: 8 hrs   06 mins  
Kern County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 9 7:31 pm Expired: May 10 4:00 am Duration: 8 hrs   29 mins  
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 10 3:54 am Expired: May 10 12:00 pm Duration: 8 hrs   06 mins  
Kings County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 9 7:31 pm Expired: May 10 4:00 am Duration: 8 hrs   29 mins  
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 10 3:54 am Expired: May 10 12:00 pm Duration: 8 hrs   06 mins  
Madera County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 9 7:31 pm Expired: May 10 4:00 am Duration: 8 hrs   29 mins  
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 10 3:54 am Expired: May 10 12:00 pm Duration: 8 hrs   06 mins  
Mariposa County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 9 7:31 pm Expired: May 10 4:00 am Duration: 8 hrs   29 mins  
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 10 3:54 am Expired: May 10 12:00 pm Duration: 8 hrs   06 mins  
Merced County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 9 7:31 pm Expired: May 10 4:00 am Duration: 8 hrs   29 mins  
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 10 3:54 am Expired: May 10 12:00 pm Duration: 8 hrs   06 mins  
Tulare County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 9 7:31 pm Expired: May 10 4:00 am Duration: 8 hrs   29 mins  
  Areas affected: West Side Mountains north of 198; 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; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Effective: May 10 3:54 am Expired: May 10 12:00 pm Duration: 8 hrs   06 mins  
Imperial County   2 alerts
SVW.gif   EXTREME HEAT WARNING   (4 updates)
  Areas affected: Parker Valley; Yuma; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: May 9 2:26 pm Expired: May 10 5:00 am Duration: 14 hrs   34 mins  
  Areas affected: Imperial County Southwest; Salton Sea; Imperial County West
Effective: May 9 2:26 pm Expired: May 10 5:00 am Duration: 14 hrs   34 mins  
  Areas affected: Parker Valley; Yuma; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: May 10 12:24 am Expired: May 10 3:30 pm Duration: 15 hrs   06 mins  
  Areas affected: Imperial County Southwest; Salton Sea; Imperial County West
Effective: May 10 12:24 am Expired: May 10 3:30 pm Duration: 15 hrs   06 mins  
SPS.gif   AIR QUALITY ALERT   (2 updates)
  Areas affected: Imperial Valley
Effective: May 9 10:01 am Expired: May 10 9:00 pm Duration: 1 day   10 hrs   59 mins  
  Areas affected: Imperial Valley
Effective: May 10 8:45 am Expired: May 11 9:00 pm Duration: 1 day   12 hrs   15 mins  
Riverside County   2 alerts
SVW.gif   EXTREME HEAT WARNING   (6 updates)
  Areas affected: Parker Valley; Yuma; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: May 9 2:26 pm Expired: May 10 5:00 am Duration: 14 hrs   34 mins  
  Areas affected: Imperial County Southwest; Salton Sea; Imperial County West
Effective: May 9 2:26 pm Expired: May 10 5:00 am Duration: 14 hrs   34 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: May 9 8:25 pm Expired: May 10 6:15 am Duration: 9 hrs   50 mins  
  Areas affected: Parker Valley; Yuma; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: May 10 12:24 am Expired: May 10 3:30 pm Duration: 15 hrs   06 mins  
  Areas affected: Imperial County Southwest; Salton Sea; Imperial County West
Effective: May 10 12:24 am Expired: May 10 3:30 pm Duration: 15 hrs   06 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: May 10 3:05 am Expired: May 10 2:15 pm Duration: 11 hrs   10 mins  
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: May 9 8:25 pm Expired: May 10 6:15 am Duration: 9 hrs   50 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: May 10 3:05 am Expired: May 10 2:15 pm Duration: 11 hrs   10 mins  
San Bernardino County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: May 9 8:25 pm Expired: May 10 6:15 am Duration: 9 hrs   50 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: May 10 3:05 am Expired: May 10 2:15 pm Duration: 11 hrs   10 mins  
San Diego County
SVW.gif   EXTREME HEAT WARNING   (2 updates)
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: May 9 8:25 pm Expired: May 10 6:15 am Duration: 9 hrs   50 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: May 10 3:05 am Expired: May 10 2:15 pm Duration: 11 hrs   10 mins  


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