Weather Alerts for Multnomah CountyIssued by the National Weather Service |
 FROST ADVISORY |
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| MULTNOMAH COUNTY | ||
Areas Affected: Clatsop County Coast - Tillamook County Coast - Central Coast of Oregon - Central Oregon Coast Range - Lower Columbia River - Inner Portland Metro - East Portland Metro - Outer Southeast Portland Metro - West Columbia River Gorge of Oregon above 500 ft - Cascade Foothills of Marion and Linn Counties - Lane County Cascade Foothills - Willapa Hills - Cowlitz County Lowlands - Inner Vancouver Metro - East Clark County Lowlands |
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| Effective: Thu, 10/29 11:14am | Updated: Thu, 10/29 6:55pm | Urgency: Expected |
| Expires: Fri, 10/30 5:00am | Severity: Minor | Certainty: Likely |
Details:
* WHAT...Temperatures of 36 degrees or lower will result in frost formation. * WHERE...Portions of northwest and west central Oregon and southwest Washington. * WHEN...From midnight Friday Night to 9 AM PDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Frost and freeze headlines are only issued through the growing season of April 1 through October 31. Therefore, frost or freeze headlines will not be issued beginning November 1, even though similar low temperatures are possible. Additionally, frost and freeze headlines will no longer be issued this growing season for the Upper Hood River Valley, southern Willamette Valley, south Washington Cascade Foothills, and north Oregon Coast Range as these locations have already experienced a hard freeze earlier in October. 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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 FREEZE WATCH |
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| MULTNOMAH COUNTY | ||
Areas Affected: Central Oregon Coast Range Lowlands - Tualatin Valley - West Central Willamette Valley - East Central Willamette Valley - Clackamas County Cascade Foothills - North Clark County Lowlands |
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| Effective: Thu, 10/29 11:14am | Updated: Thu, 10/29 6:55pm | Urgency: Future |
| Expires: Fri, 10/30 5:00am | Severity: Severe | Certainty: Possible |
Details:
* WHAT...Sub-freezing temperatures of 32 degrees or lower are possible. * WHERE...In Oregon, Clackamas County Cascade Foothills, East Central Willamette Valley, Tualatin Valley, West Central Willamette Valley, and Central Oregon Coast Range Lowlands. In Washington, North Clark County Lowlands. * WHEN...From late Friday night through Saturday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Frost and freeze headlines are only issued through the growing season of April 1 through October 31. Therefore, frost or freeze headlines will not be issued beginning November 1, even though similar low temperatures are possible. Additionally, frost and freeze headlines will no longer be issued this growing season for the Upper Hood River Valley, southern Willamette Valley, south Washington Cascade Foothills, and north Oregon Coast Range as these locations have already experienced a hard freeze earlier in October. 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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