Overview
- In a coast-to-coast turn on Wednesday, Seattle turns cooler and showery as the DC region prepares for evening thunderstorms tied to an incoming cold front.
- In western Washington, an upper-level low brings back onshore flow and triggers scattered showers and a few thunderstorms with pockets of heavy rain and gusty winds, mainly along and east of the I-5 corridor.
- Central and eastern Washington are under a Wind Advisory through Wednesday night as the disturbance passes, with stronger gusts likely to make driving on exposed highways challenging.
- Seattle’s highs drop about 20 degrees from Tuesday’s low 80s to the upper 50s and low 60s on Wednesday, with a slight chance of a light snow dusting on the highest peaks.
- In the DC area, clouds thicken by midday Wednesday and a low-end severe risk focuses on Northern Virginia and Western Maryland, followed by a cooler Thursday and a rapid rise into the 80s and near 90 this weekend.