Excessive Heat in Waterville Plateau, Washington

From June 26th through July 2nd, the town of Mansfield recorded six consecutive days with a high temperature at 100 degrees or above. Local cooling centers were set up by emergency management for those without air conditioning across the area. A report from the Washington Department of Health stated that there were two heat-related deaths in Douglas County. Further specifics were statewide and not given by counties.

A strong dome of hot high pressure over the Inland Northwest pushed afternoon high temperatures into record territory. In late June 2021, a long-lived heatwave broke many daily, monthly, and all time maximum high and low temperature records at several stations.