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Winter Weather Forecast Discussion
 
(Caution: Version displayed is not the latest version. - Issued 1953Z Oct 22, 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
353 PM EDT WED OCT 22 2014

VALID 00Z THU OCT 23 2014 - 00Z SUN OCT 26 2014


DAYS 1-3...

...NORTHERN CASCADES...

OVER THE NEXT DAY EXPECT WIDESPREAD MODERATE TO HEAVY
PRECIPITATION TO CONTINUE ACROSS THE NORTHWEST INTO NORTHERN CA IN
ASSOCIATION WITH VIGOROUS MOISTURE-LADEN ONSHORE FLOW ALONG A
WELL-DEFINED TROUGH.  HOWEVER...ONLY MODEST HEIGHT-FALLS IN THE
WAKE OF THE LEADING SHORTWAVE WILL KEEP SNOWS MAINLY CONFINED TO
THE HIGHER PEAKS OF THE NORTHERN CASCADES. ONSHORE FLOW IS
EXPECTED TO CONTINUE INTO DAYS 2-3...PROMOTING SHOWERS ACROSS THE
REGION.  BUILDING HEIGHTS AHEAD OF A DEEPENING LOW OFFSHORE WILL
KEEP ANY THREAT FOR ACCUMULATING HEAVY SNOWS AGAIN CONFINED TO THE
NORTHERN CASCADES.

THE PROBABILITY OF SIGNIFICANT ICING IS LESS THAN 10 PERCENT.

PEREIRA