Excessive Heat in Eastern Columbia River Gorge, Oregon

Calculated heat risk values at the KDLS ASOS recorded consecutive days between June 25th through June 29th of temperatures that met or exceeded excessive heat warning criteria. Several locations including the KDLS ASOS recorded consecutive days over 110 degrees through the period, with KDLS recording 118 degrees on June 28th.

A strong upper level ridge of high pressure and a surface thermal trough brought several days of record high temperatures across the PacNW, with many locations in the lower and higher elevations experiencing extreme heat risk during this event. The multiple days of extreme heat risk has been attributed to several fatalities across the region.