[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 210937
SWOMCD
SPC MCD 210936
VAZ000-WVZ000-NCZ000-TNZ000-211330-

MESOSCALE DISCUSSION 0036
NWS STORM PREDICTION CENTER NORMAN OK
0336 AM CST THU JAN 21 2010

AREAS AFFECTED...WRN VA/NC AND ERN WV

CONCERNING...FREEZING RAIN

VALID 210936Z - 211330Z

FREEZING RAIN WILL DEVELOP BETWEEN 15Z AND 18Z OVER THE HIGHER
TERRAIN OF WRN NC/VA AND DEVELOP NORTHWARD THROUGH THE DAY. FREEZING
RAIN RATES WILL BEGIN AROUND 0.02 IN/HR WITH THE POTENTIAL TO
INCREASE RAPIDLY AFTER 18Z.

AN UPPER LEVEL LOW NOTED ON WV IMAGERY OVER ERN OK AT 9Z WILL MOVE
EWD THROUGH THE DAY. OBSERVED 00Z AND FORECAST SOUNDINGS SHOWED LOW
LEVEL MOISTURE ALREADY IN PLACE WITH DEEPER MID LEVEL MOISTURE
STREAMING NEWD INTO THE MID ATLANTIC STATES. AN INCREASING LOW LEVEL
JET ALONG WITH UPPER LEVEL DIFFLUENCE WILL ENHANCE LIFT ACROSS THE
AREA AS THE UPPER LEVEL RIDGE SHIFTS EWD. BASED ON CURRENT SURFACE
OBSERVATIONS...COLD AIR DAMMING WAS BEGINNING TO DEVELOP AND WILL
STRENGTHEN DURING THE DAY WITH NELY/ELY SURFACE WINDS KEEPING
SUBFREEZING SURFACE TEMPERATURES OVER THE HIGHER TERRAIN AND E OF
THE APPALACHIANS THROUGH THE DAY. AROUND 18Z...GREATER QPF AMOUNTS
WILL SHIFT NWD AND FREEZING RAIN RATES HAVE THE POTENTIAL TO
INCREASE.

..STOPPKOTTE/HURLBUT.. 01/21/2010

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

...NOTICE...
SPC WINTER WEATHER MESOSCALE DISCUSSIONS WILL BE ISSUED ON A
SCHEDULED BASIS FROM DECEMBER 1 THROUGH FEBRUARY 28...FOUR
TIMES A DAY...AROUND 00 UTC...06 UTC...12 UTC...AND 18 UTC
FOR SIGNIFICANT SHORT RANGE WINTER WEATHER EVENTS.

ATTN...WFO...RNK...RLX...GSP...MRX...

LAT...LON   37507998 36718001 36308084 35828178 36128194 36478162
            37438126 38118100 38308009 38137975 37507998



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