Weather Alerts for King Co

Issued by the National Weather Service

Winter Storm Warning  WINTER STORM WARNING   Winter Storm Warning
KING CO

Areas Affected:
West Slopes North Cascades and Passes - West Slopes North Central Cascades and Passes - West Slopes South Central Cascades and Passes
Effective: Fri, 12/1 4:00am Updated: Thu, 11/30 3:24am Urgency: Expected
Expires: Sun, 12/3 4:00am Severity:  Moderate  Certainty: Likely

 
Details:
...WINTER STORM WARNING IN EFFECT FROM 4 AM FRIDAY TO 4 AM PST
SUNDAY ABOVE 2000 FEET...
* WHAT...Heavy snow expected above 2000 feet. Total snow
accumulations of up to 2 to 3 feet possible.
* WHERE...Cascade mountains and valleys of Whatcom and Skagit
Counties, including the Mount Baker Ski Area, the Cascade
mountains and valleys of Snohomish and King Counties, including
Stevens and Snoqualmie Pass, and the Cascade mountains and
valleys of Pierce and Lewis Counties, including the Crystal
Mountain Ski Area and Paradise on Mount Rainier.
* WHEN...From 4 AM Friday to 4 AM PST Sunday.
* IMPACTS...Travel could be very difficult.

Information:
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

Hydrologic Outlook  HYDROLOGIC OUTLOOK   Hydrologic Outlook
KING CO

Areas Affected:
Clallam - Grays Harbor - Island - Jefferson - King - Kitsap - Lewis - Mason - Pierce - San Juan - Skagit - Snohomish - Thurston - Whatcom
Effective: Wed, 11/29 4:59pm Updated: Thu, 11/30 3:24am Urgency: Future
Expires: Thu, 11/30 6:00am Severity: Unknown Certainty: Possible

 
Details:
...THREAT OF RIVER AND URBAN FLOODING SUNDAY THROUGH WEDNESDAY NEXT
WEEK ACROSS WESTERN WASHINGTON...
An period of active weather returns to Western Washington Thursday
and continues into next week as a series of frontal systems are
poised to move across the Pacific Northwest. Snow levels start off
between 1500 and 2000 feet on Thursday but rise closer to 6000 to
7000 feet by Sunday as deeper moisture advects over the region in
association with an atmospheric river. Total rainfall amounts
through Wednesday from these systems of several inches over the
lowlands to upwards of 10 inches or more in the Cascades and
Olympics will lead to rapid rises on rivers, especially combined
with melting as snow levels rise Sunday into the first half of next
week. River flooding will be possible on more susceptible rivers
such as the Skokomish River in Mason County, but may also include
other rivers in the Olympic and Cascade basins. Urban and nuisance
flooding may also occur during periods of higher rainfall rates,
especially Sunday into next week.
Please monitor the latest river forecasts from the National Weather
Service for additional information.