Winter Storm — Teton Valley, Idaho

2022-12-20 to 2022-12-23 · Teton Valley, Idaho

Event narrative

Extremely strong winds gusting 60 to 70 mph at times brought widespread blowing and drifting snow. US Highway 20 closed from Ashton to the Montana State Line. State Highway 33 closed from Newdale to Tetonia and State Highway 32 closed from Tetonia to Ashton. Fremont County School District 215 closed due to road conditions on the 21st. Extreme cold wind chills of -35 to -45 were recorded on the 22nd behind the system.

Wider weather episode

An extremely strong Pacific cold front brought wind gusts in the 50 to 80 mph range with localized blizzard conditions in the mountains and then extremely cold wind chills followed behind an arctic cold frontal passage. Snow amounts in the mountains were generally light and mainly in the 1 to 5 inch range but the combination with the wind brought many road closures to extreme eastern Idaho on the 21st into the 22nd. Some school closures occurred on the 21st and 22nd.

Source: NOAA Storm Events Database, event_id 1071792. Narrative written by the NWS forecast office that issued the report.