Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Medford OR
158 PM PDT Fri Aug 22 2025
CAZ082-231200-
/O.CON.KMFR.HT.Y.0006.000000T0000Z-250824T0300Z/
South Central Siskiyou County-
Including the cities of Dunsmuir, McCloud, and Mount Shasta
158 PM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SATURDAY...
* WHAT...Hot conditions with high temperatures of 95 to 100 degrees
expected. Overnight low temperatures of 55 to 65 degrees.
* WHERE...South Central Siskiyou County, including Mt. Shasta City,
McCloud and Dunsmuir.
* WHEN...Until 8 PM PDT Saturday.
* IMPACTS...Hot temperatures may cause heat related illnesses.
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Medford OR
158 PM PDT Fri Aug 22 2025
CAZ083>085-ORZ027>031-231200-
/O.CON.KMFR.HT.Y.0006.000000T0000Z-250824T0300Z/
North Central and Southeast Siskiyou County-Northeast Siskiyou
and Northwest Modoc Counties-Modoc County-South Central Oregon
Cascades-Siskiyou Mountains and Southern Oregon Cascades-Klamath
Basin-Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the cities of Fort Rock, Lakeview, Dorris, Siskiyou
Summit, Adin, Olene, Valley Falls, Gilchrist, Altamont, Midland,
Crescent, Canby, Pondosa, Bly, Day, Likely, Alturas, Chemult,
Newell, Diamond Lake, Paisley, Crater Lake, Tennant, Beatty,
Adel, Davis Creek, Tulelake, Crescent Lake, Howard Prairie,
Macdoel, Union Creek, Bray, Lookout, Klamath Falls, Sprague
River, and New Pine Creek
158 PM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SATURDAY...
* WHAT...Hot conditions with high temperatures of 95 to 100 degrees
expected. Overnight low temperatures of 50 to 65 degrees.
* WHERE...In Oregon, all areas from the Cascades and Siskiyou
Mountains eastward, including Union Creek, Lake of the Woods, Fish
Lake, Howard Prairie, Klamath Falls, Chiloquin, Crescent, Fort
Rock, Bly and Lakeview. In California, eastern Siskiyou County and
all of Modoc County, including Dorris, Macdoel, Tulelake, Adin,
Alturas and Likely.
* WHEN...Until 8 PM PDT Saturday.
* IMPACTS...Hot temperatures may cause heat related illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Medford OR
158 PM PDT Fri Aug 22 2025
ORZ023-025-231200-
/O.CON.KMFR.HT.Y.0006.000000T0000Z-250825T0300Z/
Central Douglas County-Eastern Douglas County Foothills-
Including the cities of Glendale, Steamboat, Canyonville,
Sutherlin, Green, Roseburg, Elkton, Drain, Winchester, Toketee
Falls, Myrtle Creek, and Umpqua
158 PM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SUNDAY...
* WHAT...Hot conditions with high temperatures of 95 to 104 degrees
expected. Overnight low temperatures of 55 to 65 degrees.
* WHERE...The valleys of central and eastern Douglas County. This
includes Camas Valley, Elkton, Drain, Sutherlin, Roseburg,
Glendale, Riddle, Canyonville, Tiller and Toketee Falls.
* WHEN...Until 8 PM PDT Sunday.
* IMPACTS...Hot temperatures may cause heat related illnesses.
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.
&&
$$
Guerrero
URGENT - WEATHER MESSAGE
National Weather Service Portland OR
208 PM PDT Fri Aug 22 2025
ORZ104-105-126>128-WAZ202-211-230915-
/O.CON.KPQR.HT.Y.0005.000000T0000Z-250826T1200Z/
North Oregon Coast Range Lowlands-Central Oregon Coast Range
Lowlands-North Oregon Cascades-Cascades of Marion and Linn
Counties-Cascades of Lane County-Willapa and Wahkiakum Lowlands-
South Washington Cascades-
Including the cities of Waldo Lake, Glenwood, Government Camp,
Timothy Lake, McKenzie Pass, Willapa, Indian Heaven Wilderness,
Alma, Mapleton, Mt. St. Helens, Breitenbush Springs, Cathlamet,
Santiam Junction, Rosburg, Necanicum, Bennett Pass, Vernonia,
Jewell, Grand Ronde, Alsea, Knappa, Tombstone Summit, Larch
Mountain, Lebam, Lost Lake, Hoskins, Willamette Pass, Santiam
Pass, and Grand Ronde Indian Reservation
208 PM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY...
* WHAT...Dangerously hot conditions with high temperatures up to
93-98F and overnight low temperatures of 60-68F possible.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon, North and Central Coast Range Valleys of
Oregon, and Willapa and Wahkiakum Lowlands.
* WHEN...Until 5 AM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.
* ADDITIONAL DETAILS...Friday and Saturday will be the hottest days.
Overnight lows as warm as the lower 70s are possible on the mid
slopes of the Cascades.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in a cool place during the heat of the
day, stay out of the sunshine, and check up on relatives and
neighbors. For those without air conditioning, use fans to keep air
moving. Keeps windows closed during the day and open at night,
unless air quality is degraded due to wildfire smoke.
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.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Portland OR
208 PM PDT Fri Aug 22 2025
ORZ106-107-WAZ203-230915-
/O.CON.KPQR.HT.Y.0005.000000T0000Z-250825T1200Z/
North Oregon Coast Range-Central Oregon Coast Range-Willapa Hills-
Including the cities of Mary`s Peak, Sunset Summit, Horton,
Brooklyn, Valsetz, and Wilson River Summit
208 PM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 5 AM PDT MONDAY...
* WHAT...Dangerously hot conditions with high temperatures up to
93-98F and overnight low temperatures of 60-68F possible.
* WHERE...North and Central Coast Range Mountains of Oregon, and
Willapa Hills.
* WHEN...Until 5 AM PDT Monday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.
* ADDITIONAL DETAILS...Friday and Saturday will be the hottest days.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in a cool place during the heat of the
day, stay out of the sunshine, and check up on relatives and
neighbors. For those without air conditioning, use fans to keep air
moving. Keeps windows closed during the day and open at night,
unless air quality is degraded due to wildfire smoke.
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.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
&&
$$
For more information from the National Weather Service visit
www.weather.gov/portland
ts
URGENT - WEATHER MESSAGE
National Weather Service Elko NV
156 PM PDT Fri Aug 22 2025
NVZ030-031-036-038-039-231500-
/O.CON.KLKN.HT.Y.0007.000000T0000Z-250823T0300Z/
/O.CON.KLKN.HT.Y.0008.250823T1800Z-250824T0300Z/
Humboldt-Northern Elko-Northern Lander and Northern Eureka-
Southwest Elko-South Central Elko-
Including the cities of Ryndon, Jarbidge, Palisade, Battle
Mountain, Dunphy, Oasis, Valmy, South Fork, Crescent Valley,
Mountain City, Dufferena, Beowawe, Elko, Winnemucca, Spring
Creek, Jiggs, Midas, Emigrant Pass, Argenta, Lee, Owyhee,
Charleston, Lamoille, Gibbs Ranch, Golconda, Tuscarora, and Ruby
Lake
156 PM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM PDT SATURDAY...
* WHAT...High temperatures 97 to 102 degrees expected in the valleys.
* WHERE...Northern Lander and Northern Eureka, Northern Elko, South
Central Elko, Southwest Elko, and Humboldt Counties.
* WHEN...For the first Heat Advisory, until 8 PM PDT this evening.
For the second Heat Advisory, from 11 AM to 8 PM PDT Saturday.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, remain out
of the sun, and check on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Sacramento CA
1243 PM PDT Fri Aug 22 2025
CAZ013-015>019-063-232300-
/O.CON.KSTO.HT.Y.0004.000000T0000Z-250824T0600Z/
Shasta Lake Area / Northern Shasta County-Northern Sacramento
Valley-Central Sacramento Valley-Southern Sacramento Valley-
Carquinez Strait and Delta-Northern San Joaquin Valley-Mountains
Southwestern Shasta County to Western Colusa County-
Including the cities of Shasta Dam, Oroville, Fairfield/Suisun,
Stockton, Marysville/Yuba City, Redding, Modesto, Alder Springs,
Chico, Red Bluff, and Sacramento
1243 PM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT SATURDAY...
* WHAT...High temperatures 95 to 107 expected. Overnight low
temperatures in the mid 60s to 70s. Widespread Moderate HeatRisk
with areas of Major HeatRisk.
* WHERE...Carquinez Strait and Delta, Sacramento Valley, Mountains
Southwestern Shasta County to Western Colusa County, Northern San
Joaquin Valley, and Shasta Lake Area / Northern Shasta County.
* WHEN...Until 11 PM PDT Saturday.
* IMPACTS...Heat related illnesses increase significantly during
heat events, particularly for those working or participating in
outdoor activities.
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.
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.
&&
$$
For more information, visit us at www.weather.gov/sto/
NR
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1223 PM PDT Fri Aug 22 2025
ORZ049-505-511-WAZ030-232230-
/O.NEW.KPDT.HT.Y.0006.250823T1900Z-250828T0400Z/
Grande Ronde Valley-John Day Basin-Central Oregon-Northwest Blue
Mountains-
Including the cities of La Grande, John Day, Prineville,
Mitchell, Union, Dayville, Cove, Elgin, Madras, Bend, Redmond,
Monument, Ski Bluewood Resort, and Spray
1223 PM PDT Fri Aug 22 2025
...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 9 PM PDT
WEDNESDAY...
* WHAT...Hot conditions with temperatures 95 to 100 degrees
expected. This will pose a moderate to locally major risk of
heat-related illness.
* WHERE...In Oregon, Central Oregon, John Day Basin, and Grande
Ronde Valley. In Washington, Northwest Blue Mountains.
* WHEN...From noon Saturday to 9 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...An alternative scenario is lingering cloud
cover from possible thunderstorms from southern Oregon may result
in lower than forecast afternoon temperatures or higher than
forecast overnight low temperatures.
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. Young children and
pets should never be left unattended in vehicles under any
circumstances.
Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when possible.
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.
For sheltering information and other human services in your area,
dial 2 1 1 during business hours or visit 211info.org for Oregon or
wa211.org for Washington anytime.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1223 PM PDT Fri Aug 22 2025
ORZ050-509-232230-
/O.NEW.KPDT.HT.Y.0006.250823T1900Z-250825T0400Z/
Wallowa County-East Slopes of the Oregon Cascades-
Including the cities of La Pine, Camp Sherman, Wallowa, Sisters,
Joseph, Sunriver, and Enterprise
1223 PM PDT Fri Aug 22 2025
...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 9 PM PDT SUNDAY...
* WHAT...Hot conditions with temperatures up to 95 degrees expected.
This will pose a moderate risk of heat-related illness.
* WHERE...East Slopes of the Oregon Cascades and Wallowa County.
* WHEN...From noon Saturday to 9 PM PDT Sunday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...An alternative scenario is lingering cloud
cover from possible thunderstorms from southern Oregon may result
in lower than forecast afternoon temperatures or higher than
forecast overnight low temperatures.
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. Young children and
pets should never be left unattended in vehicles under any
circumstances.
Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when possible.
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.
For sheltering information and other human services in your area,
dial 2 1 1 during business hours or visit 211info.org for Oregon or
wa211.org for Washington anytime.
&&
$$
BL
URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
954 AM PDT Fri Aug 22 2025
CAZ105-106-110-113-230200-
/O.CON.KEKA.HT.Y.0006.250822T1800Z-250824T0600Z/
Northern Humboldt Interior-Southern Humboldt Interior-
Northwestern Mendocino Interior-Southeastern Mendocino Interior-
Including Garberville, Bull Creek, Potter Valley, Hoopa, Hopland,
Calpella, Talmage, Orleans, Willow Creek, Ukiah, Redwood Valley,
Alderpoint, Weitchpec, Benbow, and Laytonville
954 AM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT SATURDAY...
* WHAT...Temperatures from 100 to 109 with moderate to isolated
Major HeatRisk.
* WHERE...Humboldt Interior, Northwestern Mendocino Interior, and
Southeastern Mendocino Interior.
* WHEN...Until 11 PM PDT Saturday.
* IMPACTS...Hot temperatures and warm night may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
Schedule frequent rest breaks in shaded or air conditioned
environments during outdoor work. Anyone overcome by heat should be
moved to a cool and shaded location. Heat stroke is an emergency!
Call 9 1 1.
&&
$$
For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka
EYS
URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
954 AM PDT Fri Aug 22 2025
CAZ107-108-111-114-115-230200-
/O.CON.KEKA.HT.Y.0006.000000T0000Z-250824T0600Z/
Northern Trinity-Southern Trinity-Northeastern Mendocino Interior-
Northern Lake-Southern Lake-
Including Hidden Valley Lake, Weaverville, Lakeport, Middletown,
Del Loma, Douglas City, Big Bar, Finley, Trinity Center, Peanut,
Ruth, Junction City, Forest Glen, Gravelly Valley Airport,
Covelo, Hyampom, Carrville, Hayfork, Helena, Clearlake, and
Clearlake Park
954 AM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT SATURDAY...
* WHAT...High temperatures from 100 to 110 with moderate to isolated
Major HeatRisk.
* WHERE...Trinity County, Lake County, and Northeastern Mendocino
Interior.
* WHEN...Until 11 PM PDT Saturday.
* IMPACTS...Hot temperatures and warm nights may cause heat
illnesses.
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.
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.
Schedule frequent rest breaks in shaded or air conditioned
environments during outdoor work. Anyone overcome by heat should be
moved to a cool and shaded location. Heat stroke is an emergency!
Call 9 1 1.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Reno NV
228 AM PDT Fri Aug 22 2025
CAZ071-231200-
/O.CON.KREV.HT.Y.0004.250822T1900Z-250824T1600Z/
Lassen-Eastern Plumas-Eastern Sierra Counties-
Including the cities of Susanville, Portola, Sierraville,
Westwood, and Loyalton
228 AM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 9 AM PDT
SUNDAY EASTERN LASSEN...
* WHAT...High temperatures ranging from 97 to 101 degrees. Mild
overnight lows between 60 to 68 degrees. Widespread Moderate to
Major HeatRisk.
* WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties.
* WHEN...From noon today to 9 AM PDT Sunday.
* IMPACTS...Heat-related illnesses will be more likely, especially
for those spending extended periods outdoors, in poorly cooled
indoor spaces, or who are sensitive to heat.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room if possible,
stay out of the sun, and check up on relatives and neighbors.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Reno NV
228 AM PDT Fri Aug 22 2025
NVZ004-005-231200-
/O.CON.KREV.HT.Y.0004.250822T1900Z-250824T1600Z/
Western Nevada Basin and Range including Pyramid Lake-Northern
Washoe County-
Including the cities of Nixon, Imlay, Empire, Fallon, Fernley,
Gerlach, Lovelock, and Silver Springs
228 AM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 9 AM PDT
SUNDAY...
* WHAT...High temperatures ranging from 98 to 103 degrees. Warm
overnight lows between 63 to 73 degrees. Widespread Moderate to
Major HeatRisk.
* WHERE...Northern Washoe County and Western Nevada Basin and Range
including Pyramid Lake.
* WHEN...From noon today to 9 AM PDT Sunday.
* IMPACTS...Heat-related illnesses will be more likely, especially
for those spending extended periods outdoors, in poorly cooled
indoor spaces, or who are sensitive to heat.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room if possible,
stay out of the sun, and check up on relatives and neighbors.
&&
$$
JC
