[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 142323
SWOMCD
SPC MCD 142323 
GAZ000-SCZ000-ALZ000-MSZ000-150100-

MESOSCALE DISCUSSION 1674
NWS STORM PREDICTION CENTER NORMAN OK
0623 PM CDT WED JUL 14 2004

AREAS AFFECTED...NRN/CNTRL AL/GA

CONCERNING...SEVERE THUNDERSTORM WATCH 633...

VALID 142323Z - 150100Z

CONTINUE VALID PORTIONS OF WW.

AS OF 2300Z...REGIONAL RADAR IMAGERY SHOWED LEADING EDGE OF MCS FROM
TISHOMINGO COUNTY MS SEWD TO RANDOLPH/CLAY COUNTIES IN AL AND THEN
NEWD INTO WALTON AND OCONEE COUNTIES IN GA. OVERALL SYSTEM MOVEMENT
IS TO THE SSE AT AROUND 35KTS WITH EXTRAPOLATION PLACING LEADING
EDGE OF GUST FRONT TO SRN BORDER OF WW OVER E-CNTRL AL/W-CNTRL GA BY
01Z.

COMBINATION OF MODERATE TO STRONGLY UNSTABLE DOWNSTREAM AIRMASS AND
30-40KT OF NWLY MID-LEVEL FLOW SHOULD CONTINUE TO PROMOTE SWD
PROPAGATION OF CNTRL/ERN PORTIONS OF MCS WITH DAMAGING WINDS BEING
THE PRIMARY SEVERE WEATHER THREATS. FARTHER TO THE W OVER NERN
MS/NWRN AL...VOLUMETRIC RADAR DATA SHOW SUPERCELL OVER
COLBERT/FRANKLIN COUNTIES AL ON WRN EDGE OF MCS MOVING SWD AT
25-35KTS. HERE...LATEST VWPS AND RUC SOUNDINGS SUGGEST THE POTENTIAL
FOR WWD/NWWD BACKBUILDING STORMS THIS EVENING INTO PROGRESSIVELY
STRONGER CAP IN PLACE OVER THE LOWER MS VALLEY. IN ADDITION TO
DAMAGING WINDS...LARGE HAIL IS ALSO LIKELY...ESPECIALLY WITH ONGOING
SUPERCELL OVER FAR NWRN AL. 

CONVECTIVE TRENDS WILL BE MONITORED AND IF IT BECOMES APPARENT THAT
STORMS WILL CONTINUE TO BACKBUILD TO THE W OF WW633...A NEW WW MAY
BE REQUIRED.

..MEAD.. 07/14/2004

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

ATTN...WFO...CAE...GSP...FFC...BMX...HUN...MOB...MEG...

34588826 34788232 32438229 32218811 

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