Extreme Heat Warnings and Heat Advisories have been issued for a late season heat event for the lower elevation locations across central and northeast Oregon, as well as across south central and southeast Washington. Major to Locally Extreme HeatRisk will develop across portions of the Columbia Basin, Eastern Columbia River Gorge, and adjacent valleys/foothills while Moderate to locally Major HeatRisk will develop over portions of central Oregon, John Day Basin, Grande Ronde Valley, and the Wallowa Valley.
Data Courtesy of Pendleton Weather Forecast Office