[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 222325
SWOMCD
SPC MCD 222325
SCZ000-GAZ000-NCZ000-TNZ000-230100-

MESOSCALE DISCUSSION 2393
NWS STORM PREDICTION CENTER NORMAN OK
0525 PM CST THU DEC 22 2011

AREAS AFFECTED...NORTH GA/FAR SOUTHEAST TN TO WESTERN PORTIONS OF
NC/SC

CONCERNING...TORNADO WATCH 900...

VALID 222325Z - 230100Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 900 CONTINUES.

TORNADO WATCH 900 CONTINUES UNTIL 04Z...WITH A CONTINUED RISK FOR A
FEW TORNADOES IN ADDITION TO DAMAGING WINDS ESPECIALLY ACROSS GA
PORTIONS OF WW 900.

DUAL 1008/1009 MB SURFACE LOWS..ONE ACROSS NORTHWEST GA AND THE
OTHER CENTERED NEAR THE EASTERN TN/WESTERN NC BORDER VICINITY AS OF
23Z...CONTINUE TO SLOWLY DEEPEN/ADVANCE NORTHEASTWARD...WITH
LOW-PRECEDING PRESSURE FALLS OF 2MB/2HR MAXIMIZED ACROSS WESTERN
VA/EASTERN WV. SOUTH OF A NORTHWARD-ADVANCING WARM FRONT CURRENTLY
ACROSS SOUTHERN VA...A RELATIVELY MOIST AIRMASS IS IN PLACE WITH
LOWER 60S F SURFACE DEWPOINTS ACROSS THE WARM SECTOR. THIS DEGREE OF
MOISTURE/WEAK BUOYANCY...COUPLED WITH AMPLE DYNAMIC FORCING FOR
ASCENT/VERY STRONG WIND PROFILES AS PER REGIONAL WSR-88D VWPS...WILL
CONTINUE TO YIELD A QUASI-LINEAR CONVECTIVE MODE WITH LINE-EMBEDDED
BOWS/CIRCULATIONS. LOSS OF DAYTIME HEATING WILL FURTHER TEMPER AN
ALREADY MEAGER BUOYANCY ENVIRONMENT...BUT THE STRENGTH OF EXISTING
WIND PROFILES /PER REGIONAL WSR-88D VWPS/ WILL CONTINUE TO SUPPORT
AN ISOLATED TORNADO AND/OR WIND DAMAGE THREAT INTO MID-EVENING...BUT
PROBABLY ON AN INCREASINGLY ISOLATED/MARGINAL BASIS. WHILE
UNCERTAINTY EXISTS REGARDING THE DEGREE OF DESTABILIZATION/NEED FOR
AN ADDITIONAL WATCH THIS EVENING...TRENDS WILL BE CONTINUE TO BE
MONITORED FOR CONSIDERATIONS OF A WATCH TO THE E/NE OF WW 900.

..GUYER.. 12/22/2011

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

ATTN...WFO...CAE...GSP...MRX...FFC...

LAT...LON   34468451 35218431 35428289 34728163 33048268 32238486
            33328469 34468451


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