Excessive Heat — North Oregon Cascades, Oregon

2021-08-11 to 2021-08-12 · North Oregon Cascades, Oregon

Event narrative

The high temperature in the lower elevations of the Cascades was around 100 degrees on the 11th and 12th. A sensor on Highway 26 at ZigZag (OD165) reported high temperature of 96 degrees on the 11th and 104 degrees on the 12th. Along highway 22 at Detroit, it was 105 degrees on the 11th and 104 degrees on the 12th as reported by the Detroit Lake agrimet (DTRO). The heat continued in this area until the 13th with a high temperature of 100 degrees.

Wider weather episode

Hot weather began to develop August 9, peaking August 11-12, but temperatures continued above normal into the weekend. Peak afternoon temperatures of 100 to 105 degrees drove people to seek relief in or near bodies of water. Heat caused slowdowns on the MAX light rail (Portland metro area) systems, and some businesses did close due to the heat. Cooling shelters were opened in several counties.

Source: NOAA Storm Events Database, event_id 981010. Narrative written by the NWS forecast office that issued the report.