Excessive Heat in Lower Columbia Basin, Oregon

Excessive Heat July 20, 2023 · Lower Columbia Basin, Oregon

What the National Weather Service wrote

Calculated heat risk values at the Hermiston Airport recorded temperatures that met or exceeded excessive heat warning criteria on July 20th. .

The wider storm

A ridge of high pressure built over the region accompanied by a near surface thermal trough which lead to a few lower elevation areas reaching critical heat risk thresholds while the mountain zones saw several days of high temperatures meet or exceeding 95 degrees.

Source: NOAA Storm Events Database, event 1122452. Narratives are written by the National Weather Service forecast office that issued the report.

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