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Active official alertUpdated

Frost Advisory for Foothills and Valleys of the North Cascades; Foothills and Valleys of Snohomish and Northern King Counties; Foothills and Valleys of Central King County +9 more

Official alert fields

What you need to know

Effective
Ends or expires
Official severity
Minor
Official urgency
Expected
Official certainty
Likely

What is happening

What: Temperatures as low as 34 will result in frost formation. Temperatures may vary due to clearing or fog development in localized areas. Impacts: Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. Where: Portions of northwest and west central Washington....

What the bulletin says to do

Take steps now to protect tender plants from the cold.

Full official description

Bulletin details

* WHAT...Temperatures as low as 34 will result in frost formation. Temperatures may vary due to clearing or fog development in localized areas. * WHERE...Portions of northwest and west central Washington. * WHEN...From midnight tonight to 9 AM PDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...The growing season officially ends on October 31, after which no further frost or freeze headlines will be issued.

Official geometry where available

Alert boundary

Lifecycle record

Official revisions

1 captured
  1. Alert

    Frost Advisory issued October 30 at 5:43PM PDT until October 31 at 9:00AM PDT by NWS Seattle WA

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Seattle WA. This page reorganizes official fields and does not add a forecast or expand the affected area.

CAP status
Actual
Message type
Alert
Last collected
Methodology and corrections