Frost Advisory
Status
Event Continued Active alertStart Time
Fri 04/03/2026 12:00 AM EDTEnd Time
Fri 04/03/2026 01:00 PM EDTSignificance
AdvisoryImpacts
Low impact
Locations Affected
Salem, OR ∙ Beaverton, OR ∙ Hillsboro, OR ∙ Knappa, OR ∙ Aumsville, OR ∙ Pride Peak, OR ∙ Canby, OR ∙ Lake Merwin, WA ∙ Rhododendron, OR ∙ Ryderwood, WAFull Alert Message
URGENT - WEATHER MESSAGE National Weather Service Portland OR 531 AM PDT Thu Apr 2 2026 ...FROST ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 10 AM PDT FRIDAY... * WHAT...Temperatures as low as 33 to 36 will result in frost formation. * WHERE...Northern and Central Coast Range Valleys and Mountains of Oregon, Lower Columbia River and Cowlitz River Valleys, Portland Metro Hills, Central Willamette Valley, Tualatin Valley, West Columbia River Gorge of Oregon above 500 ft, Clackamas County Cascade Foothills, Willapa Hills, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...From 9 PM this evening to 10 AM PDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.
Technical Header
ORZ104>110-113>115-119-123-WAZ203>205-208-022015- /O.CON.KPQR.FR.Y.0001.260403T0400Z-260403T1700Z/ North Oregon Coast Range Lowlands-Central Oregon Coast Range Lowlands-North Oregon Coast Range-Central Oregon Coast Range- Lower Columbia River-Tualatin Valley-Portland West Hills and Chehalem Mountain-Outer Southeast Portland Metro-West Central Willamette Valley-East Central Willamette Valley-West Columbia River Gorge of Oregon above 500 ft-Clackamas County Cascade Foothills-Willapa Hills-Cowlitz County Lowlands-North Clark County Lowlands-South Washington Cascade Foothills- Including the cities of Grand Ronde, Rainier, Dallas, La Center, Amboy, Knappa, Hillsboro, Lake Merwin, Hoskins, Kelso, Stayton, Estacada, Salem, Yacolt, Rhododendron, Boring, Sunset Summit, Wilsonville, Woodburn, Brush Prairie, Skyline Drive, Castle Rock, Cherryville, Longview, Kalama, Battle Ground, McMinnville, Corbett, Welches, Monmouth, Molalla, Brooklyn, Forest Grove, Toutle, Sylvan Hill, Jewell, Alsea, St. Helens, Tigard, Clatskanie, Valsetz, Sandy, Mary's Peak, Alma, Ridgefield, Horton, Grand Ronde Indian Reservation, Woodland, Wilson River Summit, Sherwood, Keizer, Mapleton, Newberg, Hockinson, Vernonia, Rockcreek, Scappoose, Glenwood, Necanicum, Chehalem Mountain, Brightwood, Sheridan, and Silverton 531 AM PDT Thu Apr 2 2026
