Winter Weather — East Slopes of the Washington Cascades, Washington

2018-11-23 · East Slopes of the Washington Cascades, Washington

Event narrative

Interstate 90 over Snoqualmie Pass was closed for 4 hours after multiple spin-outs due to 4 inches of wet and slushy snow accumulation.

Wider weather episode

Four inches of slushy snow accumulation fell at Hyak, just below Snoqualmie pass. This was the first significant snow for the pass this winter and multiple spin-outs resulted in Interstate 90 being closed in both directions for 2 hours.

Source: NOAA Storm Events Database, event_id 790207. Narrative written by the NWS forecast office that issued the report.