Winter weather and the possibility of snow this week...

posted Dec 1, 2013, 12:08 PM by smike@guemesfire.org   [ updated Dec 1, 2013, 12:09 PM ]
353 AM PST SUN DEC 1 2013

...THE CHANGE TO MUCH COLDER WEATHER FOR WESTERN WASHINGTON 
REMAINS FOR NEXT WEEK...

RAIN ASSOCIATED WITH A STRONG PACIFIC FRONTAL SYSTEM IS EXPECTED 
CONTINUE INTO TONIGHT. THE COLD FRONT IS EXPECTED TO MOVE INLAND 
TONIGHT AND BEGIN USHERING IN A MUCH COLDER AIR MASS EARLY NEXT 
WEEK... 

THE INCOMING FRONTAL SYSTEM WILL HAVE A LOT OF MOISTURE WITH IT
AND IS EXPECTED TO PRODUCE COPIOUS RAINFALL IN THE MOUNTAINS
TODAY INTO TONIGHT. SNOW LEVELS SHOULD REMAIN ABOVE 4000
FEET. HEAVY RAINFALL WILL RESULT IN A LOT OF WATER ON ROADWAYS
AND ROAD SPRAY WILL REDUCE VISIBILITIES. SNOW LEVELS WILL PLUNGE
FOLLOWING THE COLD FRONT LATE TONIGHT...FALLING BELOW THE
PASSES BY EARLY MONDAY MORNING...

A MUCH COLDER AIR MASS WILL SPREAD SOUTH THROUGH WESTERN
WASHINGTON MONDAY AND MONDAY NIGHT FROM THE INTERIOR OF WESTERN
CANADA. BLUSTERY FRASER RIVER CANYON OUTFLOW WILL IMPACT WESTERN
WHATCOM COUNTY AND THE SAN JUANS LATER MONDAY AND CONTINUE INTO
TUESDAY. SNOW SHOWERS MAY ACCOMPANY CONVERGENCE ZONES ON MONDAY
AND A COLD FRONT LATE MONDAY AFTERNOON OR MONDAY EVENING AS IT
MOVES SOUTH THROUGH WESTERN WASHINGTON MONDAY. AT THIS TIME IT
APPEARS THAT SPOTTY SNOWFALL ACCUMULATIONS OF AN INCH OR TWO ARE
POSSIBLE IN THE INTERIOR MONDAY OR MONDAY EVENING. BE SURE TO
MONITOR THE LATEST FORECASTS AS THIS SITUATION DRAWS CLOSER...

COLD TEMPERATURES ARE EXPECTED MONDAY NIGHT THROUGH MUCH OF NEXT
WEEK WITH TEMPERATURES RUNNING 10 TO 20 DEGREES BELOW AVERAGE FOR
THIS TIME OF YEAR. LOWS IN WESTERN WASHINGTON IN THE MID TEENS AND
20S WILL BE COMMON...WITH HIGHS IN ONLY THE UPPER 20S TO MID 30S.
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