[MCD] SWOMCD
Mesoscale Convective Discussions
Mcd at goshenarc.org
Fri Apr 21 20:43:01 UTC 2006
ACUS11 KWNS 212040
SWOMCD
SPC MCD 212039
GAZ000-ALZ000-FLZ000-212145-
MESOSCALE DISCUSSION 0606
NWS STORM PREDICTION CENTER NORMAN OK
0339 PM CDT FRI APR 21 2006
AREAS AFFECTED...MS...GA...AL...WRN FL PNHDL
CONCERNING...SEVERE THUNDERSTORM WATCH 232...233...
VALID 212039Z - 212145Z
REMAINING VALID PORTION OF WW 232 MAY BE ALLOWED TO EXPIRE AT 21Z.
CONTINUE REMAINING VALID PORTION OF WW 233. PARTS OF SOUTHERN/
EASTERN AL INTO WESTERN GEORGIA ARE BEING MONITORED FOR POSSIBLE
ADDITIONAL WW.
WELL ORGANIZED CONVECTIVE SYSTEM HAS YET TO EVOLVE...BUT STILL
APPEARS POSSIBLE LATE THIS AFTERNOON AS MID-LEVEL FORCING ASSOCIATED
WITH A SOUTHERN BRANCH SHORT WAVE TROUGH LIFTS OUT OF LOUISIANA/
MISSISSIPPI TOWARD THE SOUTHERN APPALACHIANS. INFLUX OF DRIER LOWER
/MID TROPOSPHERIC AIR AND DOWNWARD MIXING ACROSS PARTS OF SOUTHERN/
EASTERN ALABAMA HAS LOWERED BOUNDARY LAYER DEW POINTS SOME.
HOWEVER...MIXED LAYER CAPE UP TO 1000 J/KG IS STILL SUPPORTIVE OF
VIGOROUS UPDRAFTS IN FAVORABLE SHEAR ENVIRONMENT ASSOCIATED WITH 40
TO 50 KT CYCLONIC MID-LEVEL FLOW. MOST SIGNIFICANT THUNDERSTORM
ACTIVITY WILL PROGRESS THROUGH BIRMINGHAM SHORTLY...AND LIKELY
MONTGOMERY BY 22-23Z...POSSIBLY APPROACHING THE ATLANTA METROPOLITAN
AREA WITH POTENTIAL FOR HAIL AND DAMAGING WINDS BY 22/00Z.
..KERR.. 04/21/2006
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FFC...TAE...BMX...MOB...
31738815 32628837 33628714 34678430 33588378 32508417
31098546 30798673 30928818
WWWW
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