[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 111853
SWOMCD
SPC MCD 111852 COR
VAZ000-KYZ000-TNZ000-GAZ000-ALZ000-MSZ000-112015-

MESOSCALE DISCUSSION 0637
NWS STORM PREDICTION CENTER NORMAN OK
0152 PM CDT FRI APR 11 2008

AREAS AFFECTED...PORTIONS CENTRAL/ERN MS...WRN/NRN AL...MIDDLE-ERN
TN...SERN KY...EXTREME NWRN GA.

CONCERNING...TORNADO WATCH 195...197...

VALID 111852Z - 112015Z

CORRECTED FOR WW NUMBER IN HEADER

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 195...197...CONTINUES.

SUPERCELLS WITH POTENTIAL FOR TORNADOES ARE MOVING ENEWD-NEWD ACROSS
PORTIONS SSERN KY AND MID TN AND NWRN AL.  AT LEAST 3 TORNADOES
ALREADY HAVE BEEN REPORTED DURING PAST COUPLE HOURS IN
LAWRENCE/MARSHALL/DICKSON COUNTIES TN...FROM SUPERCELL CROSSING
BEDFORD COUNTY TN AT 18Z.  MORE TORNADOES AND HAIL ARE
LIKELY...ALONG WITH LOCALLY DAMAGING DOWNDRAFT GUSTS.  ADDITIONAL WW
ISSUANCE MAY BE NEEDED ACROSS PORTIONS ERN TN SWWD TOWARD CENTRAL OR
SRN AL DURING NEXT 1-2 HOURS AS
1. SUPERCELLS AHEAD OF MAIN CONVECTIVE BAND MOVE NEWD OUT OF PRESENT
WW AND
2. ADDITIONAL CONVECTION...NOW DEVELOPING FROM SERN MS THROUGH SERN
AL -- ALSO MOVES NEWD AND INTENSIFIES.

FAVORABLE WEDGE OF UNSTABLE AIR AHEAD OF THIS ACTIVITY NARROWS
CONSIDERABLY WITH NWD EXTENT ACROSS TN/SERN KY...BUT SHOULD EXPAND
NEWD WITH TIME.  MODIFIED MODEL SOUNDINGS AND RAOBS -- INCLUDING 15Z
JAN AND 17Z BMX SOUNDINGS -- SUGGEST CONTINUED SFC HEATING WILL
BOOST MLCAPES TO 1500-2000 J/KG RANGE OVER SERN MS AND S-CENTRAL
AL...500-1000 J/KG OVER NERN AL AND SERN TN...AND LESS THAN 500 J/KG
OVER NERN TN AND SERN KY.  STRONGEST LOW LEVEL SHEAR WILL EXTEND
FROM CENTRAL AL NNEWD...WITH 0-1 KM SRH REMAINING UP TO 500 J/KG
INVOF TN/KY BORDER...NEAR AND S OF RESIDUAL OUTFLOW BOUNDARY.  45-55
KT EFFECTIVE SHEAR SHOULD REMAIN COMMON OVER ALL OF WW AREAS
ALONG/AHEAD OF PRIMARY TSTM BAND.  MOST FAVORABLE BUOYANCY/SHEAR
OVERLAP IS FCST TO SHIFT SLOWLY NEWD ACROSS NRN AL...MIDDLE/SERN
TN...AND SMALL PART OF NWRN GA.

..EDWARDS.. 04/11/2008

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

ATTN...WFO...MRX...JKL...FFC...LMK...OHX...BMX...HUN...MOB...MEG...JAN...

32649076 33748888 35098744 36418610 37108463 37398347
37148312 36528358 35348449 34288528 31988684 30818846



This weather bulletin was brought to you by:
www.nashvilleweather.net