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Winter Weather Forecast Discussion
 
(Caution: Version displayed is not the latest version. - Issued 2031Z Oct 27, 2014)
 
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Geographic Boundaries -  Map 1: Color  Black/White       Map 2: Color  Black/White


PROBABILISTIC HEAVY SNOW AND ICING DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
431 PM EDT MON OCT 27 2014

VALID 00Z TUE OCT 28 2014 - 00Z FRI OCT 31 2014


DAY 1...

...PACIFIC NORTHWEST...

THE THREAT FOR HEAVY SNOW IS RATHER MINIMAL... AS A CLOSED MID TO
UPPER LOW AND ASSOCIATED SURFACE FRONT OVER THE NERN PAC WILL
SHEAR THROUGH BRITISH COLUMBIA AND THE PAC NW ON TUES. THIS SHOULD
YIELD MODEST ONSHORE FLOW WITH THE ARRIVAL OF THE THERMAL ZONE AND
FAVORABLE OROGRAPHICS SHOULD CONVERT QPF TO HEAVY SNOWFALL ACROSS
THE NORTHERN WA CASCADES. THIS IS WHERE 4 AND 8 INCH HEAVY SNOW
PROBS WILL BE ISSUED BASED ON A BLEND OF THE AGREEABLE 12Z
GUIDANCE.

THE PROBABILITY OF SIGNIFICANT ICING IS LESS THAN 10 PERCENT.



DAYS 2 AND 3...


THE PROBABILITY OF HEAVY SNOW AND/OR SIGNIFICANT ICING IS LESS
THAN 10 PERCENT.


MUSHER