[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 250438
SWOMCD
SPC MCD 250438
TNZ000-ALZ000-MSZ000-LAZ000-250615-

MESOSCALE DISCUSSION 0135
NWS STORM PREDICTION CENTER NORMAN OK
1038 PM CST THU FEB 24 2011

AREAS AFFECTED...SRN KY...MIDDLE TN...ERN-CNTRL MS...NRN-CNTRL
AL...NW GA

CONCERNING...TORNADO WATCH 16...

VALID 250438Z - 250615Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 16 CONTINUES.

THE SEVERE THREAT ASSOCIATED WITH A SQUALL-LINE FROM SRN KY SSWWD TO
CNTRL MS WILL CONTINUE EWD TONIGHT ACROSS THE REMAINDER OF THE TN
VALLEY INTO THE SRN APPALACHIAN MTNS. A WW LIKELY BE NEEDED TO THE
EAST OF WW 16 AND 17.

A SQUALL-LINE WITH SEVERAL LEWP SEGMENTS IS ONGOING JUST TO THE EAST
OF A POWERFUL 60 TO 75 KT LOW-LEVEL JET. THIS FEATURE IS CREATING
VERY STRONG SPEED SHEAR JUST ABOVE THE SFC WHICH ALONG WITH A
FORWARD SPEED OF THE LINE AT 40-45 KT WILL CREATE A FAVORABLE
ENVIRONMENT FOR WIND DAMAGE. STRONG LARGE-SCALE ASCENT AHEAD OF AN
OZARKS UPPER-LEVEL TROUGH WILL PROVIDE SUPPORT FOR THE SQUALL-LINE
FOR A FEW MORE HOURS AS THE LINE MOVES INTO SE KY...ERN TN...NE AL
AND FAR NW GA. HOWEVER...INSTABILITY IS VERY WEAK AHEAD OF THE LINE
AND THE LINE SHOULD BECOME LESS INTENSE WITH TIME. THIS SHOULD
RESULT IN THE WIND DAMAGE THREAT BECOMING INCREASINGLY ISOLATED
AFTER 06Z.

..BROYLES.. 02/25/2011

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

ATTN...WFO...OHX...BMX...HUN...MEG...JAN...

LAT...LON   31798974 31839070 32039136 32339144 32729107 33929006
            34828914 35248868 35698789 35678693 35378641 33968742
            33098812 32398896 32108926 31798974


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