564  
WWUS46 KSEW 181108  
WSWSEW  
 
URGENT - WINTER WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SEATTLE WA  
408 AM PDT SAT OCT 18 2025  
 
WAZ301-182300-  
/O.CON.KSEW.WW.Y.0016.251019T0600Z-251020T0600Z/  
CASCADES OF WHATCOM AND SKAGIT COUNTIES-  
INCLUDING MOUNT BAKER  
408 AM PDT SAT OCT 18 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING  
TO 11 PM PDT SUNDAY...  
 
* WHAT...HIGH ELEVATION SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS UP  
TO 4 TO 8 INCHES.  
 
* WHERE...CASCADES OF WHATCOM AND SKAGIT COUNTIES.  
 
* WHEN...FROM 11 PM THIS EVENING TO 11 PM PDT SUNDAY.  
 
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS.  
 
* ADDITIONAL DETAILS...SNOW ACCUMULATIONS WILL OCCUR ABOVE 4500  
FEET. PEOPLE PLANNING ON VISITING THE BACKCOUNTRY SHOULD PLAN  
ACCORDINGLY FOR WINTER WEATHER CONDITIONS.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING.  
 
 
 
 
 
44  
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