Headline:
Frost Advisory issued April 12 at 1:50AM PDT until April 13 at 8:00AM PDT by NWS Portland OR
Event:
Frost Advisory
Urgency:
Expected
Effective:
April 12, 2025 - 1:50am
Expires:
April 12, 2025 - 4:00pm
Description:
* WHAT...Temperatures as low as 33 degrees will result in frost
formation.
* WHERE...Central and Southern Willamette Valley, Northern and
Central Coast Range Valleys and Mountains of Oregon, Foothills of
the Northern and Central Oregon Cascades, Willapa Hills and
Adjacent River Valleys of Pacific and Wahkiakum Counties, Lower
Columbia River and Cowlitz River Valleys, Portland Metro Hills,
Tualatin Valley, West Columbia River Gorge of Oregon above 500 ft,
North Clark County Lowlands, and South Washington Cascade
Foothills.
* WHEN...From midnight tonight to 8 AM PDT Sunday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Very
sensitive outdoor plants may be killed if left uncovered.
* ADDITIONAL DETAILS...Rural portions of the southern Willamette
Valley, Coast Range valleys, and the valleys of the Cascade
Foothills will be the most at risk of frost development. Areas
that are shaded will maintain frost longer through the morning.
Instruction:
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.
Area Description:
North Oregon Coast Range Lowlands; Central Oregon Coast Range Lowlands; North Oregon Coast Range; Central Oregon Coast Range; Lower Columbia River; Tualatin Valley; West Hills and Chehalem Mountains; Outer Southeast Portland Metro; West Central Willamette Valley; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane County Lowlands; West Columbia River Gorge of Oregon above 500 ft; Clackamas County Cascade Foothills; Cascade Foothills of Marion and Linn Counties; Lane County Cascade Foothills; Willapa and Wahkiakum Lowlands; Willapa Hills; Cowlitz County Lowlands; North Clark County Lowlands; South Washington Cascade Foothills
Forcast Office:
NWS Portland OR