Weather Alerts for Seattle and VicinityIssued by the National Weather Service |
 WINTER WEATHER ADVISORY |
||
| SEATTLE AND VICINITY | ||
Areas Affected: Cascades of Snohomish and Northern King Counties |
||
| Effective: Thu, 12/4 9:29pm | Updated: Fri, 12/5 12:52am | Urgency: Expected |
| Expires: Fri, 12/5 7:00am | Severity: Moderate | Certainty: Likely |
Details:
* WHAT...Snow expected. Total snow accumulations up to 5 to 10 inches at Stevens Pass. Winds gusting as high as 35 mph. * WHERE...Cascades of Snohomish and Northern King Counties. * WHEN...From 7 PM Friday to 10 PM PST Saturday. * IMPACTS...Travel could be very difficult over the pass. The hazardous conditions could impact the Friday evening commute. * ADDITIONAL DETAILS...A convergence zone as well as heavy snowfall at times may allow for snowfall rates to meet or exceed 1 inch per hour. Gusty winds will limit visibility at times. Information: Slow down and use caution while traveling. Prepare for possible power outages. Refer to WSDOT for the latest pass conditions and closures. |
||
 HYDROLOGIC OUTLOOK |
||
| SEATTLE AND VICINITY | ||
Areas Affected: Clallam, WA - Grays Harbor, WA - Island, WA - Jefferson, WA - King, WA - Kitsap, WA - Lewis, WA - Mason, WA - Pierce, WA - San Juan, WA - Skagit, WA - Snohomish, WA - Thurston, WA - Whatcom, WA |
||
| Effective: Thu, 12/4 12:56pm | Updated: Fri, 12/5 12:52am | Urgency: Future |
| Expires: Fri, 12/5 4:00am | Severity: Unknown | Certainty: Possible |
Details:
ESFSEW A series of atmospheric rivers will provide rounds of increasingly impactful rainfall starting on Friday and continuing through early next week. Snow levels will remain around 5000 to 6000 feet. Expect rising rivers with potential for flooding especially for rivers flowing off the Olympics and Cascades. Urban flooding and landslides are also possible throughout this period as the soil conditions remain wet. |
||