45°31'北 / 122°40'西 / 高度 10 m / 20:01 2026-04-16, America/Los_Angeles (UTC-7)
开始于: 2026-04-17, 01:00
到: 2026-04-17, 01:00
* WHAT...Sub-freezing temperatures as low as 28 degrees expected. * WHERE...South Willamette Valley, West Columbia River Gorge of Oregon above 500 ft, and Clackamas County Cascade Foothills. * WHEN...From 1 AM to 9 AM PDT Friday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Multnomah
To prevent water pipes from freezing; wrap or drain or allow them to
drip slowly.
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.
NWS Portland OR
2026-04-16, 10:45开始于: 2026-04-17, 01:00
到: 2026-04-17, 01:00
* WHAT...Temperatures of 32 to 36 degrees will result in frost formation. * WHERE...Northern and Central Coast Range Valleys and Mountains of Oregon, Eastern Portland/Vancouver Metro, Lower Columbia River and Cowlitz River Valleys, Central Willamette Valley, Tillamook County Coast, Central Coast of Oregon, Tualatin Valley, Portland West Hills and Chehalem Mountain, Willapa Hills, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...From 1 AM to 9 AM PDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation.
MultnomahTake steps now to protect tender outdoor plants from the cold.
Consider temporarily moving outdoor potted plants indoors if they
are sensitive to cold temperatures or 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.NWS Portland OR2026-04-16, 10:45