[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 262241
SWOMCD
SPC MCD 262240
VAZ000-NCZ000-TNZ000-WVZ000-KYZ000-270015-

MESOSCALE DISCUSSION 0596
NWS STORM PREDICTION CENTER NORMAN OK
0540 PM CDT THU APR 26 2012

AREAS AFFECTED...SRN/SERN KY...MIDDLE/ERN TN...FAR WRN VA

CONCERNING...SEVERE THUNDERSTORM WATCH 191...

VALID 262240Z - 270015Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 191
CONTINUES.

AT 2230Z...REGIONAL RADAR IMAGERY SHOWS ONGOING SUPERCELLS MOVING
SEWD AT 25-35 KT ACROSS PORTIONS OF NRN MIDDLE TN INTO SERN KY.
SURFACE THERMODYNAMIC ENVIRONMENT ACROSS THE AREA IS CHARACTERIZED
BY TEMPERATURES IN THE UPR 60S TO LOW-MID 70S...AND DEWPOINTS IN THE
LOW TO MID 60S. IN ADDITION...OBJECTIVE ANALYSIS GUIDANCE SHOWS
MUCAPE VALUES RANGING FROM 1000-2000 J/KG ALONG AND AHEAD OF ONGOING
STORMS. GIVEN THE PRESENCE OF DYNAMIC FORCING FOR ASCENT ASSOCIATED
WITH MID OH VALLEY UPR DISTURBANCE...AS WELL AS LOW-LEVEL FRONTAL
FORCING...STORMS MAY PERSIST AS THEY MOVE SEWD OUT OF CURRENT
SPATIAL BOUNDS OF WW 191. AREA VWP/S INDICATE SHEAR WILL REMAIN
SUFFICIENT FOR CONTINUED STORM ORGANIZATION /INCLUDING SUPERCELLS/.
THUS...THREAT FOR LARGE HAIL AND DAMAGING WINDS MAY SPREAD INTO THE
REMAINDER OF MIDDLE/ERN TN AND POSSIBLY FAR WRN VA...WHICH COULD
RESULT IN THE NEED FOR EITHER A NEW WW...OR A SPATIAL EXPANSION OF
WW 191 BY LOCAL WFO/S.

..GARNER.. 04/26/2012

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

ATTN...WFO...RNK...RLX...GSP...MRX...JKL...LMK...OHX...HUN...
PAH...

LAT...LON   35438395 35308683 35438795 36668798 37788254 37568188
            37208249 37018246 37138187 36648162 36458178 35968250
            35438395



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