126
WWUS76 KPDT 221923
NPWPDT

URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1223 PM PDT Fri Aug 22 2025

ORZ041-044-507-508-510-WAZ024-026>029-521-523-232230-
/O.UPG.KPDT.XH.A.0003.250823T1900Z-250828T0400Z/
/O.NEW.KPDT.XH.W.0002.250823T1900Z-250828T0400Z/
Eastern Columbia River Gorge of Oregon-Lower Columbia Basin of
Oregon-Foothills of the Northern Blue Mountains of Oregon-
Foothills of the Southern Blue Mountains of Oregon-North Central
Oregon-Eastern Columbia River Gorge of Washington-Kittitas Valley-
Yakima Valley-Lower Columbia Basin of Washington-Foothills of the
Blue Mountains of Washington-Simcoe Highlands-Lower Slopes of the
Eastern Washington Cascades Crest-
Including the cities of Waitsburg, Dayton, Naches, Boardman,
Yakima, Thorp, Cle Elum, Ellensburg, Athena, Condon, Fossil,
Pendleton, Ione, Pilot Rock, Bickleton, Hermiston, Maupin,
Sunnyside, Walla Walla, Appleton, The Dalles, White Salmon,
Cliffdell, Arlington, Toppenish, Moro, Dufur, Tri-Cities,
Goldendale, Prosser, Heppner, and Connell
1223 PM PDT Fri Aug 22 2025

...EXTREME HEAT WARNING IN EFFECT FROM NOON SATURDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Dangerously hot conditions with temperatures up to 98 to
  104 degrees expected. This will pose a major to locally extreme
  risk of heat-related illness.

* WHERE...Portions of north central and northeast Oregon and
  central, south central, and southeast Washington.

* WHEN...From noon Saturday to 9 PM PDT Wednesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events.

* 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.

&&

$$

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.

&&

$$

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