On Tuesday at 3:43 p.m. an updated frost advisory was issued by the NWS Seattle WA valid from 11 p.m. until Wednesday 9 a.m. The advisory is for Foothills and Valleys of Thurston and Lewis Counties, Olympia and Southern Puget Sound, Lowlands of Lewis and Southern Thurston counties, Middle Chehalis River Valley and Willapa and Black Hills.
