Quantitative Precipitation Forecast
Issued by NWS

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FOUS11 KWBC 232025
QPFHSD

PROBABILISTIC HEAVY SNOW AND ICING DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
424 PM EDT THU OCT 23 2014

VALID 00Z FRI OCT 24 2014 - 00Z MON OCT 27 2014


DAYS 1-3...

...PAC NW INTO THE NORTHERN INTERMOUNTAIN REGION...

SOME VERY LIGHT SNOW ACCUMULATIONS ARE EXPECTED IN POST FRONTAL
ONSHORE FLOW PATRN DAY 1 OVER THE EXTREME NRN WA CASCADES WITH
LIGHT SNOW AMOUNTS EXPECTED TO RETURN ON DAY 2 IN THE SAME GENL
AREA IN RESPONSE TO WARM FRONT LIFTING NWD IN ADVANCE OF RAPIDLY
DVLPG LOW PRES THAT IS EXPECTED TO PUSH INTO WRN WA LATE SAT/SAT
NIGHT.  MORE WIDESPREAD POST FRONTAL OROGRAPHICALLY ENHANCED SNOWS
ARE EXPECTED TO DVLP INTO THE PARTS OF ERN OR/CNTL ID/SW MT/WRN WY
MTNS WITH LOWER HEIGHTS/THICKNESS COOLING BEHIND THE FRONT ON DAY
3 THOUGH MARGINAL MSTR AND BROADENING OF UPR TROF SHOULD RESULT IN
GENLY LIGHT TO SPOTTY MDT SNOWS..WITH THE HIGHER AMOUNTS EXPECTED
OVER THE SAWTOOTH AND TETONS. GOOD MODEL CLUSTERING HERE WITH ONLY
MINOR QPF DIFFERENCES.

THE PROBABILITY OF SIGNIFICANT ICING IS LESS THAN 10 PERCENT.

SULLIVAN

$$





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