Frost advisories issued for Oregon and Washington counties

The National Weather Service in Portland has issued frost advisories for northwest Oregon and southwest Washington for Thursday and Friday nights. A freeze watch is also in effect for the Willamette Valley and surrounding foothills for Friday night.

Temperatures are expected to drop between 31 and 36 degrees, which may cause frost or freezing conditions. These temperatures pose a risk to sensitive outdoor vegetation, crops, and unprotected outdoor plumbing. Affected areas include the Tualatin Valley, the Oregon Coast Range, and various lowlands in Washington such as Cowlitz County and North Clark County. Cities under advisory include Hillsboro, Sherwood, Tigard, Longview, and Salem.