Pendleton, OR – With temperatures expected to soar past 102 degrees, a heat advisory remains in effect for Eastern Oregon and Washington through 8 p.m. Monday, posing a serious risk of heat-related illness across the Columbia Basin and surrounding valleys.
According to the National Weather Service in Pendleton, Sunday’s highs may reach 105°F in cities like Hermiston, Yakima, and the Tri-Cities. The warning covers the Eastern Columbia River Gorge, Kittitas and Yakima Valleys, Foothills of the Blue Mountains, and the Lower Columbia Basin—impacting communities from Boardman and The Dalles to Walla Walla and Ellensburg.
Residents are urged to drink extra fluids, limit outdoor activity, and seek air conditioning wherever possible. Vulnerable groups, including seniors, children, and anyone without access to cooling, face increased risk. The Occupational Safety and Health Administration recommends scheduling frequent breaks and avoiding strenuous work during peak afternoon heat.
Schools, businesses, and those planning outdoor events in places like Pendleton, Prosser, or White Salmon should monitor for further advisories. Pet owners are reminded to never leave animals in vehicles, even for short periods.
The heat threat will last through Monday evening, with the worst of the temperatures expected Sunday. Stay tuned for updates; additional alerts may be issued as conditions evolve.
