High Wind — Central Chelan County, Washington

2025-12-10 to 2025-12-11 · Central Chelan County, Washington

Event narrative

Several reports of trees downed by wind in Chelan County. NWS Survey reported numerous snapped trees observed off of Mountain Home Road. Gusts of 77 to 82 mph on Tumwater Mountain weather sensor were recorded northwest of Leavenworth at 1600 LST. A trained spotter reported numerous trees down across powerlines. Blewett Pass was closed from 1800 Dec 10 to 1500 Dec 11 due to trees across US 97. Damage is estimated.

Wider weather episode

An atmospheric river brought heavy rains to the Cascades December 8 through 10. The East slopes saw 48 hour rain amounts of up to 7 inches along the crest, 3 to 4 inches in the mid slopes, and at least half an inch in the low land areas. The rain combined with snow melt and led to several flooding and landslide incidents. The flooding forced the closure of highway US 2 for several weeks. An embedded cold front brought high winds in the 60 mph range to the region causing downed trees and power lines.

Source: NOAA Storm Events Database, event_id 1307270. Narrative written by the NWS forecast office that issued the report.