[MCD] SWOMCD

[Mesoscale Convective Discussions]

ACUS11 KWNS 220106
SWOMCD
SPC MCD 220105 
GAZ000-ALZ000-220300-

MESOSCALE DISCUSSION 0609
NWS STORM PREDICTION CENTER NORMAN OK
0805 PM CDT FRI APR 21 2006

AREAS AFFECTED...SE AL...GA

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 220105Z - 220300Z

THE SEVERE THREAT OVER SE AL AND GA WILL LIKELY INCREASE THIS
EVENING AS AN MCS MOVES ENEWD TOWARD THE ATLANTA AREA. ADDITIONAL
STORMS SHOULD INTENSIFY ACROSS SE AL AND SHOULD MOVE INTO SW GA
LATER THIS EVENING. A WW WILL BECOME NECESSARY BY 0130Z.

WATER VAPOR IMAGERY CURRENTLY SHOWS A SHORTWAVE TROUGH MOVING ENEWD
ACROSS AL ATTM. THUNDERSTORMS ARE DEVELOPING ALONG THE LEADING EDGE
OF ASCENT AND WILL LIKELY INCREASE IN COVERAGE AS THE TROUGH MOVES
ACROSS THE REGION. ALTHOUGH WSR-88D VWPS CURRENTLY SHOW 0-6 KM SHEAR
VALUES OF 30 TO 35 KT...THE MODERATE INSTABILITY SHOULD BE ENOUGH
FOR STRONG MULTICELL STORMS OR PERHAPS ISOLATED SUPERCELLS. STEEP
LOW-LEVEL LAPSE RATES SHOWN ON FORECASTS SOUNDINGS WILL FAVOR WIND
DAMAGE WITH THE STRONGER CELLS. IN ADDITION...THE SHEAR PROFILES AND
MODERATE INSTABILITY MAY ALLOW A FEW SUPERCELL STORMS TO DEVELOP
CAPABLE OF LARGE HAIL AND ISOLATED WIND DAMAGE.

..BROYLES.. 04/22/2006

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

ATTN...WFO...GSP...FFC...TAE...BMX...MOB...

31328422 31048503 31208593 31968640 32968604 33608527
34478414 34078292 33248274 

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