587  
WGUS66 KSEW 221200  
FFASEW  
 
URGENT - IMMEDIATE BROADCAST REQUESTED  
FLOOD WATCH  
NATIONAL WEATHER SERVICE SEATTLE WA  
400 AM PST WED NOV 22 2017  
 
WAC045-230030-  
/O.EXA.KSEW.FA.A.0006.000000T0000Z-171124T0000Z/  
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
MASON-  
400 AM PST WED NOV 22 2017  
   
..FLOOD WATCH IN EFFECT THROUGH THURSDAY AFTERNOON
 
 
THE NATIONAL WEATHER SERVICE IN SEATTLE HAS EXPANDED THE  
 
* FLOOD WATCH TO INCLUDE A PORTION OF NORTHWEST WASHINGTON,  
INCLUDING THE FOLLOWING COUNTY, MASON.  
 
* THROUGH THURSDAY AFTERNOON  
 
* THE SKOKOMISH RIVER REMAINS ABOVE FLOOD STAGE THIS MORNING. IT  
COULD FALL BELOW FLOOD STAGE LATE TODAY, BUT ADDITIONAL RAINFALL  
WILL ALMOST CERTAINLY RENEW FLOODING LATE TONIGHT AND THURSDAY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON  
CURRENT FORECASTS.  
 
YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE  
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE  
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.  
 

 
 

 
 
WAC009-027-031-033-041-053-057-061-067-073-230030-  
/O.CON.KSEW.FA.A.0006.000000T0000Z-171124T0000Z/  
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
CLALLAM-GRAYS HARBOR-JEFFERSON-KING-LEWIS-PIERCE-SKAGIT-SNOHOMISH-  
THURSTON-WHATCOM-  
400 AM PST WED NOV 22 2017  
   
..FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON
 
 
THE FLOOD WATCH CONTINUES FOR  
 
* PORTIONS OF NORTHWEST WASHINGTON AND WEST CENTRAL WASHINGTON,  
INCLUDING THE FOLLOWING COUNTIES, IN NORTHWEST WASHINGTON,  
CLALLAM, GRAYS HARBOR, JEFFERSON, SKAGIT, AND WHATCOM. IN WEST  
CENTRAL WASHINGTON, KING, LEWIS, PIERCE, SNOHOMISH, AND  
THURSTON.  
 
* THROUGH THURSDAY AFTERNOON  
 
* RAINFALL FROM THE TUESDAY/TUESDAY NIGHT SYSTEM AMOUNTED TO  
GENERALLY 2 TO 5.5 INCHES OVER THE OLYMPIC MOUNTAINS AND 1 TO 4  
INCHES OVER THE CASCADES, WHILE THE SNOW LEVEL WAS AROUND 9000  
FEET. THERE WILL BE SOME MORE PRECIPITATION TODAY WITH THE SNOW  
LEVEL AROUND 7500 FEET, BUT IT WILL BE - RELATIVELY SPEAKING - A  
BREAK BETWEEN SYSTEMS. THE NEXT FRONT WILL MOVE THROUGH TONIGHT  
AND THANKSGIVING DAY, WITH A FORECAST OF GENERALLY 2 TO 4  
INCHES OVER THE OLYMPICS AND 1.5 TO 3.5 INCHES OVER THE  
CASCADES. THE SNOW LEVEL WILL BE AROUND 7500 FEET AS THIS SYSTEM  
ARRIVES, FALLING TO 4500 FEET LATE THURSDAY AS PRECIPITATION  
DECREASES.  
 
* FLOODING IS ALREADY OCCURRING ON SEVERAL WESTERN WASHINGTON  
RIVERS. WITH THIS SECOND ROUND OF RAINFALL TONIGHT AND THURSDAY,  
THERE IS A POSSIBILITY THAT FLOODING WILL BECOME MORE WIDESPREAD  
AND/OR PROLONGED. THERE IS AT LEAST A MINOR THREAT THAT ANY  
FLOOD-PRONE RIVER IN OUR AREA REACHING FLOOD STAGE.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON  
CURRENT FORECASTS.  
 
YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE  
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE  
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.  
 

 
 

 
 
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