504
WWUS76 KPDT 011902
NPWPDT

URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1202 PM PDT Mon Sep 1 2025

ORZ041-044-507-508-510-WAZ024-026>029-521-022215-
/O.UPG.KPDT.XH.A.0004.250902T1800Z-250905T0300Z/
/O.NEW.KPDT.XH.W.0003.250902T1800Z-250905T0300Z/
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-
Including the cities of Ione, Ellensburg, Moro, Maupin, Pilot
Rock, Condon, Sunnyside, Arlington, Toppenish, Tri-Cities,
Heppner, Hermiston, Thorp, Naches, Prosser, Boardman, White
Salmon, Goldendale, Pendleton, Dayton, Dufur, Connell, Athena,
The Dalles, Yakima, Waitsburg, Fossil, Walla Walla, and Bickleton
1202 PM PDT Mon Sep 1 2025

...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TUESDAY TO 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with temperatures up to 100
  degrees expected. This will pose a major risk of heat-related
  illness.

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

* WHEN...From 11 AM Tuesday to 8 PM PDT Thursday.

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

* ADDITIONAL DETAILS...Daily high temperature records are at risk
  for many cities in the warning area Tuesday through Thursday.

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.

&&

$$

ORZ049-502-505-511-WAZ030-523-022215-
/O.NEW.KPDT.HT.Y.0008.250902T1800Z-250903T0300Z/
Grande Ronde Valley-Northern Blue Mountains of Oregon-John Day
Basin-Central Oregon-Northwest Blue Mountains-Lower Slopes of the
Eastern Washington Cascades Crest-
Including the cities of Cle Elum, Cove, Spray, Redmond, Dayville,
Mitchell, Appleton, Union, Elgin, La Grande, Tollgate, Meacham,
Ski Bluewood Resort, John Day, Cliffdell, Monument, Madras, Bend,
and Prineville
1202 PM PDT Mon Sep 1 2025

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM PDT TUESDAY...

* WHAT...Hot conditions with temperatures up to 97 degrees expected.
  This will pose a moderate to major risk of heat-related illness.

* WHERE...In Oregon, Central Oregon, John Day Basin, Grande Ronde
  Valley, and Northern Blue Mountains of Oregon. In Washington,
  Lower Slopes of the Eastern Washington Cascades Crest and
  Northwest Blue Mountains.

* WHEN...From 11 AM to 8 PM PDT Tuesday.

* IMPACTS...Hot temperatures 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. 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.

&&

$$

LN