Excessive Heat — Greater Portland Metro Area, Oregon

2021-08-11 to 2021-08-12 · Greater Portland Metro Area, Oregon

Event narrative

The high temperature at Hillsboro (KHIO) was 103 degrees on the 11th and 12th, while it was 102 degrees on the 11th and 103 degrees on the 12th at Portland International Airport (KPDX).

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 981003. Narrative written by the NWS forecast office that issued the report.