Weather Advisory - Possible Major Snow Event...

posted Jan 14, 2012, 10:04 AM by smike@guemesfire.org   [ updated Jan 14, 2012, 10:05 AM ]
506 AM PST SAT JAN 14 2012

...COOL AIR BEHIND THIS MORNINGS COLD FRONT WILL BRING A CHANCE OF LOWLAND SNOW SHOWERS TO THE AREA THIS AFTERNOON THROUGH MONDAY...

...A SERIES OF ACTIVE STORM SYSTEMS NEXT WEEK WILL BRING PERIODS OF WINTER WEATHER TO WESTERN WASHINGTON...

A COLD FRONT WILL CROSS WESTERN WASHINGTON THIS MORNING. COOL AIR BEHIND THE FRONT WILL LOWER THE SNOW LEVEL DOWN TO NEAR THE SURFACE THIS AFTERNOON. THE COOL AIR MASS WILL REMAIN IN PLACE THROUGH AT LEAST MONDAY. THERE IS NO ORGANIZED WEATHER SYSTEM MOVING INTO WESTERN WASHINGTON DURING THIS TIME FRAME...JUST A COOL UPPER LEVEL TROUGH SETTLING INTO THE REGION. PRECIPITATION BEGINNING LATER THIS MORNING WILL BE IN THE FORM OF SHOWERS WITH AT LEAST A CHANCE OF SNOW SHOWERS REMAINING IN THE FORECAST THROUGH MONDAY. WITH THE SHOWER ACTIVITY SNOW ACCUMULATIONS WILL BE HIT AND MISS FOR THE NEXT COUPLE OF DAYS. IN GENERAL SNOW ACCUMULATION IN THE LOWLANDS ARE EXPECTED TO BE ONE INCH OR LESS. THE EXCEPTION TO THIS WILL BE THE POSSIBILITY OF CONVERGENCE ZONES OVER SNOHOMISH COUNTY. THERE IS THE POTENTIAL FOR A CONVERGENCE ZONE THIS AFTERNOON BUT THE CONVERGENCE ZONE WILL MOVE INTO THE CASCADES QUICKLY. A BETTER CHANCE FOR CONVERGENCE WILL COME ON SUNDAY NIGHT AS THE NORTHERLY WINDS OVER THE NORTH SOUND MOVE SOUTH...

NEXT WEEK...A SERIES OF STRONGER AND WETTER FRONTAL SYSTEMS WILL MOVE ACROSS THE PACIFIC NORTHWEST...STARTING AROUND TUESDAY. THESE WEATHER SYSTEMS COULD BRING A THREAT OF SIGNIFICANT SNOW TO THE 
LOWLANDS BUT THE EXTENDED COMPUTER MODEL SOLUTIONS ARE SHOWING A LARGE AMOUNT OF VARIABILITY THIS MORNING. THE EXACT TRACK AND STRENGTH OF THE SYSTEMS THAT WILL BRING THIS WINTER WEATHER THREAT ARE UNCERTAIN AT THIS TIME.

PLEASE MONITOR LATEST FORECAST FOR ADDITIONAL INFORMATION.
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