366
WWUS76 KPDT 202059
NPWPDT

URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
159 PM PDT Wed Aug 20 2025

ORZ041-044-507-508-510-WAZ024-026>029-521-523-212100-
/O.NEW.KPDT.XH.A.0003.250823T1900Z-250827T0400Z/
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 Arlington, Heppner, Ellensburg, Dufur,
Boardman, Fossil, Maupin, Thorp, Bickleton, Athena, Appleton, The
Dalles, Tri-Cities, Naches, Pilot Rock, Cle Elum, Hermiston,
Pendleton, Toppenish, Cliffdell, Waitsburg, Walla Walla, Yakima,
Moro, Connell, White Salmon, Sunnyside, Prosser, Goldendale,
Condon, Ione, and Dayton
159 PM PDT Wed Aug 20 2025

...EXTREME HEAT WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
TUESDAY EVENING...

* WHAT...Dangerously hot conditions with high temperatures of 95 to
  105 degrees possible. This will pose a major to extreme risk of
  heat-related illness.

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

* WHEN...From Saturday afternoon through Tuesday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events. Extreme heat will significantly increase the
  risk of heat-related illnesses for much of the population,
  especially those who are heat sensitive and those without
  effective cooling or adequate hydration.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Be prepared to 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. This is especially true during warm or hot
weather when car interiors can reach lethal temperatures in a matter
of minutes.

&&

$$

MF