[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 241057
SWOMCD
SPC MCD 241057 
ALZ000-FLZ000-MSZ000-LAZ000-241200-

MESOSCALE DISCUSSION 2456
NWS STORM PREDICTION CENTER NORMAN OK
0457 AM CST WED NOV 24 2004

AREAS AFFECTED...SERN MS INTO PORTIONS OF CENTRAL/SWRN AL

CONCERNING...TORNADO WATCH 893...

VALID 241057Z - 241200Z

NEW WW MAY BE REQUIRED ACROSS THE REST OF CENTRAL AND SRN AL INTO
THE WRN FL PANHANDLE BY 12Z.

TORNADIC SUPERCELLS WILL REMAIN LIKELY THROUGH AT LEAST 12Z ACROSS
SERN MS...A PORTION OF SERN LA AND MUCH OF CENTRAL INTO SWRN AL.

PARAMETERS CONTINUE TO BE SUPPORTIVE OF STRONG TORNADOES AS ONGOING
ACTIVITY MOVES NEWD AT 35-45 KT.  DEEP LAYER SHEAR ASSOCIATED WITH
STRONG UPPER TROUGH MOVING TOWARD LOWER MS VALLEY WILL CONTINUE TO
SUPPORT SUPERCELLS.  MOIST AIR MASS OVER THIS AREA IS AIDING IN LOW
LCLS...WHILE 40-45 KT SSWLY LLJ EXTENDING FROM SERN LA INTO AL IS
RESULTING IN VERY STRONG 0-1 KM SRH VALUES RANGING FROM 300-450
M2/S2 FOR TORNADOES.  FAST MOVING SQUALL LINE...EXTENDING FROM
TUSCALOOSA COUNTY AL TO ST CHARLES PARISH LA WILL CONTINUE TO OUTRUN
THE DISCRETE SUPERCELLS ACROSS WRN AL TO SERN LA THROUGH
12Z...LEADING TO MORE OF A DAMAGING WIND POTENTIAL.  HOWEVER...IF
NEW DISCRETE STORMS CAN DEVELOP AHEAD OF THE SQUALL LINE...TORNADOES
WOULD BE LIKELY GIVEN THE AFOREMENTIONED SEVERE PARAMETERS.

..PETERS.. 11/24/2004

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

ATTN...WFO...BMX...MOB...JAN...LIX...

30489033 31828893 33278773 33288590 31398701 30458797 

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