000
FOUS11 KWBC 031943
QPFHSD

PROBABILISTIC HEAVY SNOW AND ICING DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
343 PM EDT WED NOV 03 2010

VALID 00Z THU NOV 04 2010 - 00Z SUN NOV 07 2010

DAY 1...

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

DAY 2 AND 3...

A DEEP AMPLIFIED UPPER TROUGH ESTABLISHING ITSELF OVER THE ERN
THIRD OF THE COUNTRY WILL FEATURE THE COLDEST AIRMASS OF THE EARLY
SEASON... WHILE TWO SEPARATE SURFACE WAVES LIFT FROM THE MID-ATL
COASTLINE THROUGH THE NORTHEAST. THE MAIN DEEP PLUME OF ATLANTIC
MOISTURE WILL ASSOCIATE WITH THE LOWS AND REMAIN WELL EAST OF THE
EXPANDING COLD POLAR AIR MASS DIVING AND ENTRENCHING ACROSS THE
GRT LAKES AND OH/TN VLYS AND EXPANDING EAST INTO THE MID-ATL
STATES AND SOUTHEAST. THUS THE BROAD COLD SECTOR WILL BE DETACHED
FROM THE MOISTURE SOURCE AND COLD BLUSTERY NRLY TO NWRLY FLOW
COULD KICK-START SOME RAIN MIXED WITH SNOW DOWNWIND OF THE GRT
LAKES. THE BEST OPPORTUNITY FOR MEASURABLE SNOW WILL BE ALONG THE
APPALACHIAN SPINE AS IDEAL NWRLY COMPONENT AND UPSLOPE FLOW COULD
YIELD A FEW INCHES OF SNOW IN THE WV AND WRN NC MTNS. THIS IS
WHERE HPC WILL ISSUE A LOW PROBABILITY OF 4 INCHES OF SNOW ON FRI
AND SAT.

THE PROBABILITY OF SIGNIFICANT ICING IS LESS THAN 10 PERCENT.

MUSHER
$$