Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
1209 AM PDT Tue Sep 8 2026
AZZ002-570-571-576-CAZ522-526-527-NVZ016-017-020-025-026-082300-
/O.NEW.KVEF.XH.W.0006.260910T1700Z-260911T0300Z/
Lake Havasu and Fort Mohave-Lake Mead - AZ side-Lake Mohave - AZ
side-Northwest Deserts-Death Valley National Park-Cadiz Basin-San
Bernardino County-Upper Colorado River Valley-Northeast Clark
County-Western Clark and Southern Nye County-Las Vegas Valley-
Lake Mead - NV side-Lake Mohave - NV side-
Including the cities of Topock, Bullhead City, North Las Vegas,
Yucca, Moapa, Boulder City, Pahrump, Desert Rock, Henderson, South
Cove, Valentine, Lake Havasu City, Vidal Junction, Needles, Dolan
Springs, Furnace Creek, Wikieup, Mesquite, Golden Valley, Shoshone,
Overton, Indian Springs, Kingman, Las Vegas, Temple Bar, Amargosa
Valley, Laughlin, Desert Hills, Stovepipe Wells, and Hoover Dam
1209 AM PDT Tue Sep 8 2026 /1209 AM MST Tue Sep 8 2026/
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM PDT / MST TO 8 PM PDT /
MST THURSDAY...
* WHAT...Dangerously hot late-season conditions expected with high
temperatures up to 112 to 116 in Death Valley and the Colorado
River Valley; up to 105 to 110 in the Las Vegas Valley, Moapa
Valley, and Pahrump Valley.
* WHERE...Portions of northwest Arizona, southeast California, and
southern Nevada.
* WHEN...From 10 AM PDT / MST to 8 PM PDT / MST Thursday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and
loose-fitting clothing. Try to limit strenuous activities to early
morning or evening. Take action when you see symptoms of heat
exhaustion and heat stroke.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Monitor the latest forecasts and warnings for updates.
&&
$$
Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Hanford CA
252 AM PDT Tue Sep 8 2026
CAZ300>317-319-321-081900-
/O.CON.KHNX.HT.Y.0006.260909T1700Z-260911T0500Z/
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-
Including the cities of Porterville, Coalinga, Kerman, Le Grand, San
Luis Reservoir, Five Points, Kingsburg, Corcoran, Avenal, Wasco,
Lamont, Lost Hills, Los Banos, Planada, Shafter, Madera, Richgrove,
Millerton Lake, Goshen, Bakersfield, Atwater, Blackwells Corner,
Kettleman City, Alpaugh, Lake Mcclure, Selma, Fresno, McKittrick,
Lemoore, Delano, Visalia, Sanger, Buttonwillow, Merced, Mariposa,
Tulare, Hanford, Taft, Parlier, El Portal, Lemoore Station, and Arvin
252 AM PDT Tue Sep 8 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM PDT
THURSDAY...
* WHAT...High temperatures up to 102 and morning lows up to 75
expected. Widespread Moderate HeatRisk will be present with areas
of Major HeatRisk in the foothills where the thermal belt is
strongest and in urban areas.
* WHERE...The San Joaquin Valley, Sierra Nevada Foothills, and West
Side Hills along the Coastal Range.
* WHEN...From 10 AM Wednesday to 10 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses, especially
those without effective cooling and/or adequate hydration.
* ADDITIONAL DETAILS...Little to no relief at night in areas of Major
HeatRisk. Air conditioning is necessary; fans and open windows at
night will not be enough.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
CMolina
URGENT - WEATHER MESSAGE
National Weather Service Sacramento CA
1030 AM PDT Mon Sep 7 2026
CAZ129-131-134-137-142-144>146-148>164-082300-
/O.NEW.KSTO.HT.Y.0005.260909T1700Z-260911T0500Z/
Sierra (Tehama-Plumas) 1000-3000 ft-N. Motherlode 1000-3000 ft-
Central Motherlode 1000-3000 ft-Southern Motherlode 1000-3000 ft-
N. Sac Valley in Tehama County-Central Glenn Co & Interstate 5-
Eastern Glenn County-Butte County Below 1000 ft-Central Colusa
County Incl. I-5-Eastern Colusa County-Sutter/Yuba counties below
1000 ft-Yolo / Solano County Hills-W. Yolo County including
Capay/I-505-C. Yolo/NE Solano including Woodland-Sac Metro/W. El
Dorado/Amador County-C. Solano County including Fairfield-SW
Solano County including Vallejo-Sacramento County Delta-San
Joaquin County Delta-C. San Joaquin County including Stockton-
Tracy Triangle Below 1000 ft-NE San Joaquin Valley Below 1000 ft-
E. Diablo Range Above 1000 ft-W. Stanislaus County Above 1000 ft
& I-5-C. Stanislaus County including Modesto-
Including the cities of Auburn, Grass Valley, Colfax, Nevada City,
Cameron Park, Shingle Springs, Placerville, Cool, Jackson, Stockton,
Lodi, Esparto, Winters, Vallejo, Benicia, Red Bluff, Woodland, Dixon,
Tracy, Fairfield, Vacaville, Yuba City, Beale AFB, Paradise, Chico,
Oroville, Gridley, Modesto, Turlock, Willows, Orland, Sonora, Angels
Camp, Lincoln, Roseville, Sacramento, Elk Grove, Folsom, Walnut
Grove, Colusa, and Williams
1030 AM PDT Mon Sep 7 2026
...HEAT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM PDT
THURSDAY...
* WHAT...High temperatures 97 to 102 and low temperatures 65 to 75
expected, with widespread Moderate HeatRisk and areas of Major
HeatRisk.
* WHERE...The central and southern Sacramento Valley, northern San
Joaquin Valley, Delta and Carquinez Strait, Foothills, and portions
of the Coast Range.
* WHEN...From 10 AM Wednesday to 10 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses, especially to
anyone without effective cooling and/or adequate hydration.
* ADDITIONAL DETAILS...Hottest temperatures and areas of Major
HeatRisk are expected to occur on Thursday. Warmest overnight lows
are expected in the Sierra foothills thermal belts.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
For more information, visit us at www.weather.gov/sto/
NR
Frost Advisory
URGENT - WEATHER MESSAGE
National Weather Service Medford OR
1106 AM PDT Mon Sep 7 2026
CAZ085-ORZ029>031-080915-
/O.NEW.KMFR.FR.Y.0009.260908T1000Z-260908T1600Z/
Modoc County-Klamath Basin-Northern and Eastern Klamath County
and Western Lake County-Central and Eastern Lake County-
Including the cities of Olene, Midland, Sprague River, Chemult,
Canby, Lookout, Bly, Gilchrist, Alturas, Crescent, Davis Creek, Fort
Rock, and Beatty
1106 AM PDT Mon Sep 7 2026
...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM PDT TUESDAY...
* WHAT...Widespread frost conditions, with local areas of
sub-freezing temperatures as low as 31 degrees
* WHERE...In California, valleys and basins in Modoc County. In
Oregon, valleys and basins in Lake and Klamath counties. This
includes the communities of Crescent, Chemult, Fort Rock and the
rest of the Christmas Valley, Chiloquin, Sprague River, Bly, cities
in the Klamath Basin, areas east of Lakeview, Canby, and Alturas.
* WHEN...From 3 AM to 9 AM PDT Tuesday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered. Animals not
acclimated to these conditions may be harmed if left outside for
extended periods.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants and sensitive animals from
the cold.
&&
$$
TAD
