[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 231955
SWOMCD
SPC MCD 231954
PAZ000-MDZ000-VAZ000-WVZ000-NCZ000-OHZ000-TNZ000-KYZ000-INZ000-232130-

MESOSCALE DISCUSSION 0259
NWS STORM PREDICTION CENTER NORMAN OK
0254 PM CDT WED MAR 23 2011

AREAS AFFECTED...VA...SW PA...WV...OH...KY

CONCERNING...TORNADO WATCH 55...

VALID 231954Z - 232130Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 55 CONTINUES.

A SEVERE THREAT ONGOING ACROSS TORNADO WATCH 55 WILL GRADUALLY
DEVELOP EWD INTO THE CNTRL APPALACHIAN MTNS. A TORNADO
THREAT...LARGE HAIL AND DAMAGING WINDS WILL BE LIKELY WITH THE
STRONGER CORES. A WW WILL LIKELY BE NEEDED SOON ACROSS THE REGION.

SCATTERED SEVERE STORMS ARE CURRENTLY LOCATED IN THE NRN AND WRN
PART OF TORNADO WATCH 55. THE STORMS ARE LOCATED TO THE SOUTHWEST OF
A SFC LOW ALONG AN AXIS OF MODERATE INSTABILITY. DESTABILIZATION HAS
TAKEN PLACE FURTHER EAST ACROSS WV AND FAR SW PA WHERE MLCAPE VALUES
ARE NOW ESTIMATED IN THE 1000 TO 1200 J/KG RANGE. THIS COMBINED WITH
STRONG DEEP LAYER SHEAR AND SUBSTANTIAL LOW-LEVEL SHEAR WILL BE
SUPPORTIVE OF SUPERCELLS THIS AFTERNOON. COLD TEMPS ALOFT WITH STEEP
MID-LEVEL LAPSE RATES WILL BE FAVORABLE FOR LARGE HAIL AND ISOLATED
VERY LARGE HAIL WILL BE POSSIBLE WITH THE MORE DOMINANT SUPERCELL
STORMS. A THREAT FOR WIND DAMAGE AND A FEW TORNADOES WILL ALSO
EXIST. THE SEVERE THREAT SHOULD CONTINUE EWD INTO THE CNTRL
APPALACHIAN MTNS PERSISTING INTO THE EARLY EVENING.

..BROYLES.. 03/23/2011

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

ATTN...WFO...CTP...LWX...RNK...PBZ...RLX...CLE...MRX...JKL...
ILN...LMK...

LAT...LON   37187883 36478036 36598295 36828431 37278542 37898552
            38908495 40228362 40748216 41057886 40117725 37187883



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