Temperatures as low as 32 to 36 will result in frost formation.
WHERE
Eastern Strait of Juan de Fuca, Foothills and Valleys of the North Cascades, Foothills of the Western and Southern Olympic Peninsula, Lake Crescent Area Including US 101, Lowlands of Western Whatcom County, Foothills and Valleys of Central King County, Foothills and Valleys of Pierce and Southern King Counties, and Foothills and Valleys of Snohomish and Northern King Counties.
WHEN
Until 9 AM PDT this morning.
IMPACTS
Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Recommendations
Take steps now to protect tender plants from the cold.