Weather Alerts for PortlandIssued by the National Weather Service |
 FREEZE WARNING |
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| PORTLAND | ||
Areas Affected: Benton County Lowlands - Linn County Lowlands - Lane County Lowlands - West Columbia River Gorge of Oregon above 500 ft - Upper Hood River Valley - Clackamas County Cascade Foothills - Cascade Foothills of Marion and Linn Counties - Lane County Cascade Foothills |
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| Effective: Thu, 4/16 8:28pm | Updated: Thu, 4/16 10:36pm | Urgency: Expected |
| Expires: Fri, 4/17 9:00am | Severity: Moderate | Certainty: Likely |
Details:
* WHAT...Sub-freezing temperatures as low as 25 to 28 degrees expected. * WHERE...South Willamette Valley, Foothills of the Northern and Central Oregon Cascades, West Columbia River Gorge of Oregon above 500 ft, and Upper Hood River Valley. * 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. Information: 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. |
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 FROST ADVISORY |
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| PORTLAND | ||
Areas Affected: Tillamook County Coast - Central Coast of Oregon - 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 - East Portland Metro - Outer Southeast Portland Metro - West Central Willamette Valley - East Central Willamette Valley - Willapa Hills - Cowlitz County Lowlands - North Clark County Lowlands - East Clark County Lowlands - South Washington Cascade Foothills |
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| Effective: Thu, 4/16 8:28pm | Updated: Thu, 4/16 10:36pm | Urgency: Expected |
| Expires: Fri, 4/17 9:00am | Severity: Minor | Certainty: Likely |
Details:
* 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. Sensitive outdoor plants may be killed if left uncovered. Information: 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. |
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