Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Aug 3 5:49 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 2 hrs 26 mins
EXTREME HEAT WATCH
Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Aug 3 5:49 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 2 hrs 26 mins
Lassen County 2 alerts
HEAT ADVISORY
Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Aug 3 5:49 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 2 hrs 26 mins
EXTREME HEAT WATCH
Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Aug 3 5:49 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 2 hrs 26 mins
Sierra County 2 alerts
HEAT ADVISORY
Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Aug 3 5:49 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 2 hrs 26 mins
EXTREME HEAT WATCH
Areas affected: Lassen-Eastern Plumas-Eastern Sierra Counties
Effective: Aug 3 5:49 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 2 hrs 26 mins
Del Norte County 2 alerts
HEAT ADVISORY (2 updates)
Areas affected: Interior Del Norte
Effective: Aug 3 8:55 pm
Expired: Aug 4 5:00 am
Duration: 8 hrs 05 mins
Areas affected: Interior Del Norte
Effective: Aug 4 2:57 am
Expired: Aug 4 11:00 pm
Duration: 20 hrs 03 mins
RED FLAG WARNING (6 updates)
RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM PDT WEDNESDAY FOR
STRONG GUSTY WIND AND LOW RH AND UNSTABLE CONDITIONS FOR FIRE
WEATHER ZONES 620, 621, 622, AND 623
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 3 3:54 pm
Expired: Aug 4 5:00 am
Duration: 13 hrs 06 mins
RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM PDT WEDNESDAY FOR
STRONG GUSTY WIND AND LOW RH AND UNSTABLE CONDITIONS FOR FIRE
WEATHER ZONES 620, 621, 622, AND 623
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 3 3:54 pm
Expired: Aug 4 5:00 am
Duration: 13 hrs 06 mins
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 4 4:53 am
Expired: Aug 4 5:00 pm
Duration: 12 hrs 07 mins
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 4 4:53 am
Expired: Aug 4 5:00 pm
Duration: 12 hrs 07 mins
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 4 6:40 am
Expired: Aug 4 6:45 pm
Duration: 12 hrs 05 mins
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 4 6:40 am
Expired: Aug 4 6:45 pm
Duration: 12 hrs 05 mins
Siskiyou County 2 alerts
RED FLAG WARNING (10 updates)
RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM PDT WEDNESDAY FOR
STRONG GUSTY WIND AND LOW RH AND UNSTABLE CONDITIONS FOR FIRE
WEATHER ZONES 620, 621, 622, AND 623
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 3 3:54 pm
Expired: Aug 4 5:00 am
Duration: 13 hrs 06 mins
RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM PDT WEDNESDAY FOR
STRONG GUSTY WIND AND LOW RH AND UNSTABLE CONDITIONS FOR FIRE
WEATHER ZONES 620, 621, 622, AND 623
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 3 3:54 pm
Expired: Aug 4 5:00 am
Duration: 13 hrs 06 mins
The National Weather Service in Medford has issued a Red Flag
Areas affected: Shasta-Trinity National Forest in Siskiyou County
Effective: Aug 3 3:54 pm
Expired: Aug 4 5:00 am
Duration: 13 hrs 06 mins
Areas affected: Western Klamath National Forest; Umpqua Basin; Umpqua National Forest
Effective: Aug 3 3:54 pm
Expired: Aug 4 5:00 am
Duration: 13 hrs 06 mins
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 4 4:53 am
Expired: Aug 4 5:00 pm
Duration: 12 hrs 07 mins
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 4 4:53 am
Expired: Aug 4 5:00 pm
Duration: 12 hrs 07 mins
Areas affected: Western Klamath National Forest; Shasta-Trinity National Forest in Siskiyou County; Umpqua Basin; Umpqua National Forest
Effective: Aug 4 4:53 am
Expired: Aug 4 5:00 pm
Duration: 12 hrs 07 mins
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 4 6:40 am
Expired: Aug 4 6:45 pm
Duration: 12 hrs 05 mins
Areas affected: Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; Southern Oregon Cascades
Effective: Aug 4 6:40 am
Expired: Aug 4 6:45 pm
Duration: 12 hrs 05 mins
Areas affected: Western Klamath National Forest; Shasta-Trinity National Forest in Siskiyou County; Umpqua Basin; Umpqua National Forest
Effective: Aug 4 6:40 am
Expired: Aug 4 6:45 pm
Duration: 12 hrs 05 mins
HEAT ADVISORY (3 updates)
Areas affected: North Central and Southeast Siskiyou County; Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County
Effective: Aug 3 10:03 pm
Expired: Aug 4 2:00 pm
Duration: 15 hrs 57 mins
Areas affected: Western Siskiyou County; Eastern Curry County and Josephine County; Jackson County
Effective: Aug 3 10:03 pm
Expired: Aug 4 2:00 pm
Duration: 15 hrs 57 mins
Areas affected: Central Siskiyou County
Effective: Aug 3 10:03 pm
Expired: Aug 4 2:00 pm
Duration: 15 hrs 57 mins
Fresno County
HEAT 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 3 7:35 pm
Expired: Aug 4 5:00 am
Duration: 9 hrs 25 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 4 4:45 am
Expired: Aug 4 1:00 pm
Duration: 8 hrs 15 mins
Kern County 2 alerts
HEAT 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 3 7:35 pm
Expired: Aug 4 5:00 am
Duration: 9 hrs 25 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 4 4:45 am
Expired: Aug 4 1:00 pm
Duration: 8 hrs 15 mins
EXTREME HEAT WARNING (2 updates)
Areas affected: Indian Wells Valley; Mojave Desert Slopes; Mojave Desert
Effective: Aug 3 7:35 pm
Expired: Aug 4 5:00 am
Duration: 9 hrs 25 mins
Areas affected: Indian Wells Valley; Mojave Desert Slopes; Mojave Desert
Effective: Aug 4 4:45 am
Expired: Aug 4 1:00 pm
Duration: 8 hrs 15 mins
Kings County
HEAT 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 3 7:35 pm
Expired: Aug 4 5:00 am
Duration: 9 hrs 25 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 4 4:45 am
Expired: Aug 4 1:00 pm
Duration: 8 hrs 15 mins
Madera County
HEAT 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 3 7:35 pm
Expired: Aug 4 5:00 am
Duration: 9 hrs 25 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 4 4:45 am
Expired: Aug 4 1:00 pm
Duration: 8 hrs 15 mins
Mariposa County
HEAT 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 3 7:35 pm
Expired: Aug 4 5:00 am
Duration: 9 hrs 25 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 4 4:45 am
Expired: Aug 4 1:00 pm
Duration: 8 hrs 15 mins
Merced County
HEAT 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 3 7:35 pm
Expired: Aug 4 5:00 am
Duration: 9 hrs 25 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 4 4:45 am
Expired: Aug 4 1:00 pm
Duration: 8 hrs 15 mins
Tulare County
HEAT 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 3 7:35 pm
Expired: Aug 4 5:00 am
Duration: 9 hrs 25 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; 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; Tehachapi; Grapevine; Frazier Mountain Communities
Effective: Aug 4 4:45 am
Expired: Aug 4 1:00 pm
Duration: 8 hrs 15 mins
Humboldt County
HEAT ADVISORY (2 updates)
Areas affected: Northeastern Interior Humboldt; Southeastern Interior Humboldt
Effective: Aug 3 8:55 pm
Expired: Aug 4 5:00 am
Duration: 8 hrs 05 mins
Areas affected: Northeastern Interior Humboldt; Southeastern Interior Humboldt
Effective: Aug 4 2:57 am
Expired: Aug 4 11:00 pm
Duration: 20 hrs 03 mins
Imperial County
EXTREME HEAT WARNING (6 updates)
Areas affected: Imperial County Southwest; Salton Sea; Imperial County Southeast; Imperial County West; Imperial Valley
Effective: Aug 3 12:00 pm
Expired: Aug 4 5:00 am
Duration: 17 hrs 00 mins
Areas affected: Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Chiriaco Summit
Effective: Aug 3 12:00 pm
Expired: Aug 4 5:00 am
Duration: 17 hrs 00 mins
Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 3 12:00 pm
Expired: Aug 4 5:00 am
Duration: 17 hrs 00 mins
Areas affected: Imperial County Southwest; Salton Sea; Imperial County Southeast; Imperial County West; Imperial Valley
Effective: Aug 4 12:34 am
Expired: Aug 4 3:30 pm
Duration: 14 hrs 56 mins
Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 4 12:34 am
Expired: Aug 4 3:30 pm
Duration: 14 hrs 56 mins
Areas affected: Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Chiriaco Summit
Effective: Aug 4 12:34 am
Expired: Aug 4 3:30 pm
Duration: 14 hrs 56 mins
Riverside County 2 alerts
EXTREME HEAT WARNING (8 updates)
Areas affected: Imperial County Southwest; Salton Sea; Imperial County Southeast; Imperial County West; Imperial Valley
Effective: Aug 3 12:00 pm
Expired: Aug 4 5:00 am
Duration: 17 hrs 00 mins
Areas affected: Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Chiriaco Summit
Effective: Aug 3 12:00 pm
Expired: Aug 4 5:00 am
Duration: 17 hrs 00 mins
Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 3 12:00 pm
Expired: Aug 4 5:00 am
Duration: 17 hrs 00 mins
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 3 9:40 pm
Expired: Aug 4 6:15 am
Duration: 8 hrs 35 mins
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 4 12:24 am
Expired: Aug 4 3:30 pm
Duration: 15 hrs 06 mins
Areas affected: Imperial County Southwest; Salton Sea; Imperial County Southeast; Imperial County West; Imperial Valley
Effective: Aug 4 12:34 am
Expired: Aug 4 3:30 pm
Duration: 14 hrs 56 mins
Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 4 12:34 am
Expired: Aug 4 3:30 pm
Duration: 14 hrs 56 mins
Areas affected: Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Chiriaco Summit
Effective: Aug 4 12:34 am
Expired: Aug 4 3:30 pm
Duration: 14 hrs 56 mins
HEAT ADVISORY (2 updates)
Areas affected: Riverside County Mountains
Effective: Aug 4 12:24 am
Expired: Aug 4 3:30 pm
Duration: 15 hrs 06 mins
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 4 12:24 am
Expired: Aug 4 3:30 pm
Duration: 15 hrs 06 mins
San Bernardino County 2 alerts
EXTREME HEAT WARNING (6 updates)
Areas affected: Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Chiriaco Summit
Effective: Aug 3 12:00 pm
Expired: Aug 4 5:00 am
Duration: 17 hrs 00 mins
Areas affected: Northwest Plateau; Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Owens Valley South; Owens Valley North; Esmeralda and Central Nye County; Lincoln County; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side
Effective: Aug 3 11:29 am
Expired: Aug 4 5:00 am
Duration: 17 hrs 31 mins
Areas affected: Apple and Lucerne Valleys
Effective: Aug 3 9:40 pm
Expired: Aug 4 6:15 am
Duration: 8 hrs 35 mins
Areas affected: Apple and Lucerne Valleys
Effective: Aug 4 12:24 am
Expired: Aug 4 3:30 pm
Duration: 15 hrs 06 mins
Areas affected: Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Chiriaco Summit
Effective: Aug 4 12:34 am
Expired: Aug 4 3:30 pm
Duration: 14 hrs 56 mins
Areas affected: Northwest Plateau; Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Owens Valley South; Owens Valley North; Esmeralda and Central Nye County; Lincoln County; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side
Effective: Aug 4 2:31 am
Expired: Aug 4 5:00 pm
Duration: 14 hrs 29 mins
HEAT ADVISORY (2 updates)
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 4 12:24 am
Expired: Aug 4 3:30 pm
Duration: 15 hrs 06 mins
Areas affected: San Bernardino County Mountains
Effective: Aug 4 12:24 am
Expired: Aug 4 3:30 pm
Duration: 15 hrs 06 mins
Inyo County 2 alerts
EXTREME HEAT WARNING (2 updates)
Areas affected: Northwest Plateau; Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Owens Valley South; Owens Valley North; Esmeralda and Central Nye County; Lincoln County; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side
Effective: Aug 3 11:29 am
Expired: Aug 4 5:00 am
Duration: 17 hrs 31 mins
Areas affected: Northwest Plateau; Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Owens Valley South; Owens Valley North; Esmeralda and Central Nye County; Lincoln County; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side
Effective: Aug 4 2:31 am
Expired: Aug 4 5:00 pm
Duration: 14 hrs 29 mins
HEAT ADVISORY (2 updates)
Areas affected: Eastern Sierra Slopes of Inyo County; White Mountains of Inyo County; Sheep Range; Spring Mountains-Red Rock Canyon
Effective: Aug 3 11:29 am
Expired: Aug 4 5:00 am
Duration: 17 hrs 31 mins
Areas affected: Eastern Sierra Slopes of Inyo County; White Mountains of Inyo County; Sheep Range; Spring Mountains-Red Rock Canyon
Effective: Aug 4 2:31 am
Expired: Aug 4 5:00 pm
Duration: 14 hrs 29 mins
Lake County
HEAT ADVISORY (2 updates)
Areas affected: Northwestern Interior Mendocino; Northeastern Interior Mendocino; Southeastern Interior Mendocino; Northern Lake; Western Lake; Southwestern Lake; Eastern Lake
Effective: Aug 3 8:55 pm
Expired: Aug 4 5:00 am
Duration: 8 hrs 05 mins
Areas affected: Northwestern Interior Mendocino; Northeastern Interior Mendocino; Southeastern Interior Mendocino; Northern Lake; Western Lake; Southwestern Lake; Eastern Lake
Effective: Aug 4 2:57 am
Expired: Aug 4 11:00 pm
Duration: 20 hrs 03 mins
Mendocino County
HEAT ADVISORY (2 updates)
Areas affected: Northwestern Interior Mendocino; Northeastern Interior Mendocino; Southeastern Interior Mendocino; Northern Lake; Western Lake; Southwestern Lake; Eastern Lake
Effective: Aug 3 8:55 pm
Expired: Aug 4 5:00 am
Duration: 8 hrs 05 mins
Areas affected: Northwestern Interior Mendocino; Northeastern Interior Mendocino; Southeastern Interior Mendocino; Northern Lake; Western Lake; Southwestern Lake; Eastern Lake
Effective: Aug 4 2:57 am
Expired: Aug 4 11:00 pm
Duration: 20 hrs 03 mins
Northern Lake County
HEAT ADVISORY (2 updates)
Areas affected: Northwestern Interior Mendocino; Northeastern Interior Mendocino; Southeastern Interior Mendocino; Northern Lake; Western Lake; Southwestern Lake; Eastern Lake
Effective: Aug 3 8:55 pm
Expired: Aug 4 5:00 am
Duration: 8 hrs 05 mins
Areas affected: Northwestern Interior Mendocino; Northeastern Interior Mendocino; Southeastern Interior Mendocino; Northern Lake; Western Lake; Southwestern Lake; Eastern Lake
Effective: Aug 4 2:57 am
Expired: Aug 4 11:00 pm
Duration: 20 hrs 03 mins
Modoc County 2 alerts
HEAT ADVISORY (2 updates)
Areas affected: North Central and Southeast Siskiyou County; Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County
Effective: Aug 3 10:03 pm
Expired: Aug 4 2:00 pm
Duration: 15 hrs 57 mins
Areas affected: Surprise Valley California
Effective: Aug 3 5:49 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 2 hrs 26 mins
EXTREME HEAT WATCH
Areas affected: Surprise Valley California
Effective: Aug 3 5:49 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 2 hrs 26 mins
San Diego County 2 alerts
EXTREME HEAT WARNING (2 updates)
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 3 9:40 pm
Expired: Aug 4 6:15 am
Duration: 8 hrs 35 mins
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 4 12:24 am
Expired: Aug 4 3:30 pm
Duration: 15 hrs 06 mins
HEAT ADVISORY
Areas affected: San Diego County Mountains
Effective: Aug 4 12:24 am
Expired: Aug 4 3:30 pm
Duration: 15 hrs 06 mins
San Luis Obispo County
HEAT ADVISORY
Areas affected: San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Interior Mountains; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains
Effective: Aug 3 8:09 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 0 hrs 06 mins
Santa Barbara County 2 alerts
HEAT ADVISORY
Areas affected: San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Interior Mountains; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains
Effective: Aug 3 8:09 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 0 hrs 06 mins
EXTREME HEAT WARNING
Areas affected: Cuyama Valley
Effective: Aug 3 8:09 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 0 hrs 06 mins
Ventura County 2 alerts
HEAT ADVISORY
Areas affected: San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Interior Mountains; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains
Effective: Aug 3 8:09 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 0 hrs 06 mins
EXTREME HEAT WARNING
Areas affected: Northern Ventura County Mountains
Effective: Aug 3 8:09 pm
Expired: Aug 4 8:15 pm
Duration: 1 day 0 hrs 06 mins
Trinity County
HEAT ADVISORY (2 updates)
Areas affected: Southern Trinity; Northwestern and Central Trinity; Northeastern Trinity
Effective: Aug 3 8:55 pm
Expired: Aug 4 5:00 am
Duration: 8 hrs 05 mins
Areas affected: Southern Trinity; Northwestern and Central Trinity; Northeastern Trinity
Effective: Aug 4 2:57 am
Expired: Aug 4 11:00 pm
Duration: 20 hrs 03 mins
Alameda County
HEAT ADVISORY (2 updates)
Areas affected: East Bay Interior Valleys; East Bay Hills
Effective: Aug 4 5:09 am
Expired: Aug 4 10:00 pm
Duration: 16 hrs 51 mins
Areas affected: East Bay Interior Valleys; East Bay Hills
Effective: Aug 4 9:14 am
Expired: Aug 4 10:00 pm
Duration: 12 hrs 46 mins
Contra Costa County
HEAT ADVISORY (2 updates)
Areas affected: East Bay Interior Valleys; East Bay Hills
Effective: Aug 4 5:09 am
Expired: Aug 4 10:00 pm
Duration: 16 hrs 51 mins
Areas affected: East Bay Interior Valleys; East Bay Hills
Effective: Aug 4 9:14 am
Expired: Aug 4 10:00 pm
Duration: 12 hrs 46 mins
Santa Clara County
HEAT ADVISORY
Areas affected: Santa Clara Valley Including San Jose; Eastern Santa Clara Hills
HEAT ADVISORY 
EXTREME HEAT WATCH 
RED FLAG WARNING 
EXTREME HEAT WARNING 
