Logo
Alert Archives for All California Counties
If there's no Alerts for the day, there's no log file
Select a date:  
55 total alerts issued on this day

Updates Every 15 Minutes
Spacer GifLast Update:August 20, 2026 - 7:00 am PDT
Imperial County
SVW.gif   EXTREME HEAT WARNING   (3 updates)
  Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 19 10:49 am Expired: Aug 20 5:00 am Duration: 18 hrs   11 mins  
  Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 20 2:30 am Expired: Aug 20 3:30 pm Duration: 13 hrs   00 mins  
  Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 20 11:44 am Expired: Aug 21 3:00 am Duration: 15 hrs   16 mins  
Riverside County   2 alerts
SVW.gif   EXTREME HEAT WARNING   (7 updates)
  Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 19 10:49 am Expired: Aug 20 5:00 am Duration: 18 hrs   11 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 19 8:39 pm Expired: Aug 20 6:15 am Duration: 9 hrs   36 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 20 1:31 am Expired: Aug 20 3:30 pm Duration: 13 hrs   59 mins  
  Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 20 2:30 am Expired: Aug 20 3:30 pm Duration: 13 hrs   00 mins  
  Areas affected: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Effective: Aug 20 11:44 am Expired: Aug 21 3:00 am Duration: 15 hrs   16 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 20 1:41 pm Expired: Aug 20 9:45 pm Duration: 8 hrs   04 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 20 7:39 pm Expired: Aug 21 6:15 am Duration: 10 hrs   36 mins  
HTY.gif   HEAT ADVISORY   (4 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 19 8:39 pm Expired: Aug 20 6:15 am Duration: 9 hrs   36 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 20 1:31 am Expired: Aug 20 3:30 pm Duration: 13 hrs   59 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 20 1:41 pm Expired: Aug 20 8:00 pm Duration: 6 hrs   19 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 20 7:39 pm Expired: Aug 20 8:45 pm Duration: 1 hr   06 mins  
Inyo County
SVW.gif   EXTREME HEAT WARNING   (2 updates)
  Areas affected: Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Death Valley National Park; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; 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 19 4:11 am Expired: Aug 20 5:00 am Duration: 1 day   0 hrs   49 mins  
  Areas affected: Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Death Valley National Park; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; 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 20 4:57 am Expired: Aug 21 5:00 am Duration: 1 day   0 hrs   03 mins  
San Bernardino County   2 alerts
SVW.gif   EXTREME HEAT WARNING   (2 updates)
  Areas affected: Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Death Valley National Park; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; 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 19 4:11 am Expired: Aug 20 5:00 am Duration: 1 day   0 hrs   49 mins  
  Areas affected: Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Death Valley National Park; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; 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 20 4:57 am Expired: Aug 21 5:00 am Duration: 1 day   0 hrs   03 mins  
HTY.gif   HEAT ADVISORY   (4 updates)
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 19 8:39 pm Expired: Aug 20 6:15 am Duration: 9 hrs   36 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 20 1:31 am Expired: Aug 20 3:30 pm Duration: 13 hrs   59 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 20 1:41 pm Expired: Aug 20 8:00 pm Duration: 6 hrs   19 mins  
  Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Aug 20 7:39 pm Expired: Aug 20 8:45 pm Duration: 1 hr   06 mins  
Modoc County   2 alerts
FWA.gif   FIRE WEATHER WATCH   (5 updates)
The National Weather Service in Medford has issued a Fire Weather
  Areas affected: Central Siskiyou County Including Shasta Valley; Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 19 11:53 am Expired: Aug 20 12:00 am Duration: 12 hrs   07 mins  
  Areas affected: Central Siskiyou County Including Shasta Valley; Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 20 1:40 am Expired: Aug 20 5:00 pm Duration: 15 hrs   20 mins  
FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONES 284 AND 285
  Areas affected: Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 20 9:28 am Expired: Aug 20 9:00 pm Duration: 11 hrs   32 mins  
The National Weather Service in Reno has issued a Fire Weather
  Areas affected: Surprise Valley California; Eastern Lassen County; Northern Washoe County
Effective: Aug 20 10:52 am Expired: Aug 21 11:00 am Duration: 1 day   0 hrs   08 mins  
The National Weather Service in Medford has issued a Red Flag
  Areas affected: Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 20 9:02 pm Expired: Aug 21 6:00 am Duration: 8 hrs   58 mins  
FWW.gif   RED FLAG WARNING   (2 updates)
FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONES 284 AND 285
  Areas affected: Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 20 9:28 am Expired: Aug 20 9:00 pm Duration: 11 hrs   32 mins  
The National Weather Service in Medford has issued a Red Flag
  Areas affected: Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 20 9:02 pm Expired: Aug 21 6:00 am Duration: 8 hrs   58 mins  
Siskiyou County   2 alerts
FWA.gif   FIRE WEATHER WATCH   (4 updates)
The National Weather Service in Medford has issued a Fire Weather
  Areas affected: Central Siskiyou County Including Shasta Valley; Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 19 11:53 am Expired: Aug 20 12:00 am Duration: 12 hrs   07 mins  
  Areas affected: Central Siskiyou County Including Shasta Valley; Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 20 1:40 am Expired: Aug 20 5:00 pm Duration: 15 hrs   20 mins  
FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONES 284 AND 285
  Areas affected: Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 20 9:28 am Expired: Aug 20 9:00 pm Duration: 11 hrs   32 mins  
The National Weather Service in Medford has issued a Red Flag
  Areas affected: Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 20 9:02 pm Expired: Aug 21 6:00 am Duration: 8 hrs   58 mins  
FWW.gif   RED FLAG WARNING   (5 updates)
FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONES 284 AND 285
  Areas affected: Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 20 9:28 am Expired: Aug 20 9:00 pm Duration: 11 hrs   32 mins  
RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM PDT FRIDAY FOR STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONE 281
  Areas affected: Central Siskiyou County Including Shasta Valley
Effective: Aug 20 9:28 am Expired: Aug 20 9:00 pm Duration: 11 hrs   32 mins  
RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM PDT FRIDAY FOR STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONE 281
  Areas affected: Central Siskiyou County Including Shasta Valley
Effective: Aug 20 9:28 am Expired: Aug 20 9:00 pm Duration: 11 hrs   32 mins  
The National Weather Service in Medford has issued a Red Flag
  Areas affected: Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Effective: Aug 20 9:02 pm Expired: Aug 21 6:00 am Duration: 8 hrs   58 mins  
A Red Flag Warning has also been issued from 2 PM to 9 PM PDT
  Areas affected: Central Siskiyou County Including Shasta Valley
Effective: Aug 20 9:02 pm Expired: Aug 21 6:00 am Duration: 8 hrs   58 mins  
San Diego County   3 alerts
SVW.gif   EXTREME HEAT WARNING   (4 updates)
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 19 8:39 pm Expired: Aug 20 6:15 am Duration: 9 hrs   36 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 20 1:31 am Expired: Aug 20 3:30 pm Duration: 13 hrs   59 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 20 1:41 pm Expired: Aug 20 9:45 pm Duration: 8 hrs   04 mins  
  Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Aug 20 7:39 pm Expired: Aug 21 6:15 am Duration: 10 hrs   36 mins  
SPS.gif   SPECIAL WEATHER STATEMENT  
At 1256 PM PDT, Doppler radar was tracking a strong thunderstorm near
  Areas affected: San Diego County Inland Valleys; San Diego County Mountains
Effective: Aug 20 12:56 pm Expired: Aug 20 1:30 pm Duration: 0 hrs   34 mins  
FLS.gif   FLOOD ADVISORY  
  Areas affected: San Diego, CA
Effective: Aug 20 12:52 pm Expired: Aug 20 2:00 pm Duration: 1 hr   08 mins  
San Luis Obispo County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: Cuyama Valley; Santa Clarita Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Barbara County Interior Mountains; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Santa Susana Mountains; Southern Ventura County Mountains; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 19 2:48 am Expired: Aug 20 4:00 pm Duration: 1 day   13 hrs   12 mins  
  Areas affected: Cuyama Valley; Santa Clarita Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Barbara County Interior Mountains; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Santa Susana Mountains; Southern Ventura County Mountains; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 20 1:31 am Expired: Aug 20 8:00 pm Duration: 18 hrs   29 mins  
Santa Barbara County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: Cuyama Valley; Santa Clarita Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Barbara County Interior Mountains; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Santa Susana Mountains; Southern Ventura County Mountains; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 19 2:48 am Expired: Aug 20 4:00 pm Duration: 1 day   13 hrs   12 mins  
  Areas affected: Cuyama Valley; Santa Clarita Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Barbara County Interior Mountains; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Santa Susana Mountains; Southern Ventura County Mountains; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 20 1:31 am Expired: Aug 20 8:00 pm Duration: 18 hrs   29 mins  
Ventura County
HTY.gif   HEAT ADVISORY   (2 updates)
  Areas affected: Cuyama Valley; Santa Clarita Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Barbara County Interior Mountains; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Santa Susana Mountains; Southern Ventura County Mountains; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 19 2:48 am Expired: Aug 20 4:00 pm Duration: 1 day   13 hrs   12 mins  
  Areas affected: Cuyama Valley; Santa Clarita Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Barbara County Interior Mountains; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Santa Susana Mountains; Southern Ventura County Mountains; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Aug 20 1:31 am Expired: Aug 20 8:00 pm Duration: 18 hrs   29 mins  
Kern County
LWY.gif   LAKE WIND ADVISORY   (2 updates)
  Areas affected: Kern River Valley
Effective: Aug 20 10:32 am Expired: Aug 20 7:00 pm Duration: 8 hrs   28 mins  
  Areas affected: Kern River Valley
Effective: Aug 20 6:29 pm Expired: Aug 20 8:00 pm Duration: 1 hr   31 mins  
Tulare County
LWY.gif   LAKE WIND ADVISORY   (2 updates)
  Areas affected: Kern River Valley
Effective: Aug 20 10:32 am Expired: Aug 20 7:00 pm Duration: 8 hrs   28 mins  
  Areas affected: Kern River Valley
Effective: Aug 20 6:29 pm Expired: Aug 20 8:00 pm Duration: 1 hr   31 mins  
Lassen County
FWA.gif   FIRE WEATHER WATCH  
The National Weather Service in Reno has issued a Fire Weather
  Areas affected: Surprise Valley California; Eastern Lassen County; Northern Washoe County
Effective: Aug 20 10:52 am Expired: Aug 21 11:00 am Duration: 1 day   0 hrs   08 mins  


Contact Us Contact Us Thumbnail | Home Mobile Phone Thumbnail | Private Policy
Terms & Conds | Consent Preferences | Cookie Policy
Never base life decisions on weather info over Internet.
Site dedicated to Jesus Christ | Random Quotes
Copyright © 2026 El Dorado Weather, Inc.