Oregon, Washington Moderate Heat Advisory | Effective 08/20/2026 22:58

Headline: 
Heat Advisory issued August 20 at 10:58PM PDT until August 21 at 10:00PM PDT by NWS Pendleton OR
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
August 20, 2026 - 10:58pm
Expires: 
August 21, 2026 - 7:00am
Description: 
* WHAT...Hot conditions with afternoon high temperatures of 95 to 105 degrees expected. This will pose a moderate to major risk of heat-related illness. * WHERE...Portions of central, north central, and northeast Oregon and central, south central, and southeast Washington. * WHEN...Until 10 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses.
Instruction: 
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 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.
Area Description: 
Eastern Columbia River Gorge of Oregon; Lower Columbia Basin of Oregon; Grande Ronde Valley; Wallowa County; Northern Blue Mountains of Oregon; Southern Blue Mountains of Oregon; John Day Basin; Ochoco-John Day Highlands; Foothills of the Northern Blue Mountains of Oregon; Foothills of the Southern Blue Mountains of Oregon; North Central Oregon; Central Oregon; Eastern Columbia River Gorge of Washington; Kittitas Valley; Yakima Valley; Lower Columbia Basin of Washington; Foothills of the Blue Mountains of Washington; Northwest Blue Mountains; Simcoe Highlands; Lower Slopes of the Eastern Washington Cascades Crest
Forcast Office: 
NWS Pendleton OR
Sender: 
w-nws.webmaster@noaa.gov