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 11:06 pm
Expired: Aug 21 3:00 pm
Duration: 15 hrs 54 mins
Riverside County
EXTREME HEAT WARNING (2 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 20 11:06 pm
Expired: Aug 21 3:00 pm
Duration: 15 hrs 54 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
Inyo County
EXTREME HEAT WARNING
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
EXTREME HEAT WARNING
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
Lassen County
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
Modoc County 2 alerts
FIRE WEATHER WATCH (2 updates)
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
RED FLAG WARNING
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
RED FLAG WARNING (2 updates)
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
FIRE WEATHER WATCH
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
San Diego County
EXTREME HEAT WARNING
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
EXTREME HEAT WARNING 
FIRE WEATHER WATCH 
RED FLAG WARNING 
