814
WWUS76 KPDT 250344
NPWPDT

URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
844 PM PDT Sun Aug 24 2025

ORZ050-509-250445-
/O.EXP.KPDT.HT.Y.0006.000000T0000Z-250825T0400Z/
Wallowa County-East Slopes of the Oregon Cascades-
Including the cities of Enterprise, La Pine, Camp Sherman,
Joseph, Wallowa, Sisters, and Sunriver
844 PM PDT Sun Aug 24 2025

...HEAT ADVISORY WILL EXPIRE AT 9 PM PDT THIS EVENING...

Above-normal temperatures will persist through the midweek, however
the advised areas are generally expected to fall below Heat Advisory
criteria Monday onward.

$$

ORZ041-044-507-508-510-WAZ024-026>029-521-523-252200-
/O.CON.KPDT.XH.W.0002.000000T0000Z-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 Goldendale, Appleton, Bickleton,
Toppenish, Condon, Naches, Fossil, The Dalles, Arlington, Pilot
Rock, Thorp, Moro, Ione, Boardman, Yakima, Pendleton, Athena,
Ellensburg, Sunnyside, Tri-Cities, Maupin, Waitsburg, Cliffdell,
Heppner, Hermiston, Dufur, White Salmon, Connell, Walla Walla,
Dayton, Cle Elum, and Prosser
844 PM PDT Sun Aug 24 2025

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 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...Until 9 PM PDT Wednesday.

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

* ADDITIONAL DETAILS...Lingering cloud cover from thunderstorms in
  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-WAZ030-252200-
/O.CON.KPDT.HT.Y.0006.000000T0000Z-250828T0400Z/
Grande Ronde Valley-John Day Basin-Central Oregon-Northwest Blue
Mountains-
Including the cities of John Day, Monument, Ski Bluewood Resort,
Dayville, Cove, Spray, Redmond, Union, La Grande, Elgin, Bend,
Mitchell, Prineville, and Madras
844 PM PDT Sun Aug 24 2025

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 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...Until 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Lingering cloud cover from thunderstorms in
  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.

&&

$$

CE