[MCD] SWOMCD

[Mesoscale Convective Discussions]

ACUS11 KWNS 051854
SWOMCD
SPC MCD 051853 
GAZ000-ALZ000-MSZ000-LAZ000-052100-

MESOSCALE DISCUSSION 1748
NWS STORM PREDICTION CENTER NORMAN OK
0153 PM CDT SAT AUG 05 2006

AREAS AFFECTED...CENTRAL AL...CENTRAL/SRN MS...LA

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 051853Z - 052100Z

THUNDERSTORMS ARE CONTINUING TO DEVELOP ACROSS CENTRAL AL INTO
CENTRAL/SRN MS AND PARTS OF LA...WITH THREAT FOR ISOLATED WET
MICROBURSTS AND MARGINAL HAIL. WW NOT ANTICIPATED ATTM.

THUNDERSTORMS ARE DEVELOPING ACROSS THIS REGION NEAR A WEAK SURFACE
FRONT FROM EAST CENTRAL AL SWWD INTO SERN LA...ENHANCED BY DYNAMIC
FORCING ALONG AN UPPER LEVEL DEFORMATION ZONE ACROSS AL AND AN UPPER
LOW MOVING WWD ACROSS THE NERN GULF OF MEXICO. THE ENVIRONMENT IS
CHARACTERIZED BY WARM/MOIST LOW LEVELS WITH SURFACE TEMPERATURES IN
THE 90S AND DEW POINTS IN UPPER 60S/LOWER 70S...CONTRIBUTING TO
MODERATE INSTABILITY WITH MLCAPE OF 1500-2500 J/KG.  15-20 KT NELY
MID LEVEL WINDS ARE CONTRIBUTING TO MARGINAL DEEP LAYER SHEAR OVER
SWRN MS/SERN LA AREA...ALTHOUGH GENERALLY WEAKER SHEAR ACROSS MOST
OF THE REGION IS MORE SUPPORTIVE OF PULSE STORMS.  STRONG HEATING
HAS STEEPENED THE LOW LEVEL LAPSE RATES SUGGESTING THREAT FOR
ISOLATED WET MICROBURSTS WITH BRIEF DAMAGING WIND GUSTS THIS
AFTERNOON AND EARLY EVENING.

..WEISS.. 08/05/2006

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

ATTN...WFO...FFC...BMX...MOB...JAN...LIX...LCH...SHV...

30139252 31069243 31999100 32648985 32948795 33608581
33518518 32798514 31468860 31088996 30349122 29819177 

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