Heavy Snow — Lower Chehalis Valley Area, Washington

2021-12-26 to 2021-12-27 · Lower Chehalis Valley Area, Washington

Event narrative

A winter storm brought heavy snow to the Lower Chehalis Valley Area, resulting in generally 8-12 inches of new snow accumulation.

Wider weather episode

A very cold airmass pushed into Western Washington at the end of December, resulting in cold air amidst sufficient moisture and lift as a modified arctic frontal boundary slid south. This made for significant lowland and mountain snow, with a period of drier but much colder weather for the following days. Several climate sites reached record low temperatures during and shortly after the winter storm.

Source: NOAA Storm Events Database, event_id 998810. Narrative written by the NWS forecast office that issued the report.