[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 191806
SWOMCD
SPC MCD 191805 
MDZ000-PAZ000-WVZ000-VAZ000-NCZ000-TNZ000-KYZ000-SCZ000-GAZ000-192200-

MESOSCALE DISCUSSION 2545
NWS STORM PREDICTION CENTER NORMAN OK
1205 PM CST SUN DEC 19 2004

AREAS AFFECTED...SW PA THROUGH THE SRN APPALACHIANS

CONCERNING...HEAVY SNOW 

VALID 191805Z - 192200Z

HEAVY SNOW RATES OF 1-2"/HR ARE EXPECTED THIS AFTN MAINLY OVER THE
HIGHER TERRAIN FROM SW PA/WV THROUGH THE SRN APPALACHIANS. 

AN ARCTIC COLD FRONT EXTENDS FROM JUST EAST OF STATE COLLEGE PA TO
HILLSVILLE VA AND ASHEVILLE NC. BEHIND THIS FRONT...A VERY COLD
AIRMASS WILL ADVECT QUICKLY SEWD...WITH SFC TEMPERATURES FALLING
BELOW FREEZING IN THE WAKE OF THE FRONT. AT UPPER LEVELS...LATEST WV
IMAGERY SHOWS SHARP TROUGH AXIS NOW MOVING THROUGH THE CNTRL GREAT
LAKES/OH VALLEY. LARGE SCALE LIFT ASSOCIATED WITH STRONG PVA/HEIGHT
FALLS WILL SUPPORT CONTINUED DEVELOPMENT OF WIDESPREAD
PRECIPITATION. THERMODYNAMIC PROFILE WILL RESULT IN SNOW EVEN AT
LOWER ELEVATIONS. UPSLOPE FLOW WILL FURTHER ENHANCE SNOWFALL RATES
ESPECIALLY ON NW FACING SLOPES AS SFC WINDS VEER BEHIND THE FRONT.
POINT FORECAST SOUNDINGS INDICATE STEEPENING LAPSE RATES THROUGH THE
AFTN AS 850MB TEMPS DROP 5C OR MORE BY 20/00Z.

..TAYLOR.. 12/19/2004

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

...NOTICE...
SPC WINTER WEATHER MESOSCALE DISCUSSIONS WILL BE ISSUED ON A 
SCHEDULED BASIS...FOUR TIMES A DAY...BETWEEN 00-01 UTC...
06-07 UTC...12-13 UTC...AND 18-19 UTC AS SIGNIFICANT SHORT
RANGE WINTER WEATHER EVENTS UNFOLD.  THIS SCHEDULE WILL BE
USED FROM DECEMBER 1 THROUGH FEBRUARY 28.

ATTN...WFO...CTP...LWX...RNK...PBZ...RLX...GSP...MRX...JKL...FFC...

38247967 36158148 34808324 35218421 36008383 37238264
38488151 40747971 40747933 40617864 39467900 

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