Frost/Freeze in Grand Ronde Valley, Oregon

Frost/Freeze September 30, 2024 · Grand Ronde Valley, Oregon

What the National Weather Service wrote

The La Grande ASOS reported freezing and subfreezing temperatures between 5 am and 7:30 am. Co-op station D6879 in Union, OR read similar values as well.

The wider storm

Cold air flowing in from behind a departing trough made for freezing temperatures overnight into the morning of September 30 across the Wallowa Valley. the Grande Ronde Valley, and central Oregon.

Source: NOAA Storm Events Database, event 1217559. Narratives are written by the National Weather Service forecast office that issued the report.

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