SWOMCD
SPC MCD 210409
GAZ000-210515-
MESOSCALE DISCUSSION 0960
NWS STORM PREDICTION CENTER NORMAN OK
1109 PM CDT TUE MAY 20 2008
AREAS AFFECTED...S CNTRL GA
CONCERNING...SEVERE THUNDERSTORM WATCH 331...
VALID 210409Z - 210515Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 331
CONTINUES.
THREAT FOR ISOLATED DAMAGING WIND AND HAIL CONTINUES OVER REMAINING
PART OF WW 331. STORMS WILL BEGIN MOVING SOUTH OF WW 331 BY 0430Z.
IF DESIRED THE REMAINING ROW OF COUNTIES IN SRN PARTS OF THE ATLANTA
FORECAST AREA CAN BE LOCALLY ADDED. HOWEVER...AN ADDITIONAL WW SOUTH
OF WW 331 IS NOT ANTICIPATED AT THIS TIME.
LINE OF STORMS CONTINUES SEWD THROUGH S CNTRL AND SE GA. RADAR DATA
SHOW THE STORMS ARE DEVELOPING WITHIN ZONE OF LIFT ABOVE AN OUTFLOW
BOUNDARY THAT IS MOVING SWD AT AROUND 25 KT. WV IMAGERY SUGGESTS
THIS AREA IS WITHIN A ZONE OF LARGE SCALE SUBSIDENCE. A STABILIZING
BOUNDARY LAYER AND INCREASINGLY MARGINAL INSTABILITY WILL FURTHER
LIMIT THE OVERALL SEVERE THREAT. CONVERGENCE AND LIFT ALONG THE
OUTFLOW BOUNDARY MAY SUSTAIN THE STORMS NEXT 2-3 HOURS ACROSS PARTS
OF SRN GA. ISOLATED LARGE HAIL AND DAMAGING WIND WILL REMAIN
POSSIBLE...BUT OVERALL THREAT DOES NOT APPEAR SUFFICIENT TO WARRANT
ANOTHER WW.
..DIAL.. 05/21/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...CHS...JAX...FFC...TAE...
32158432 32128338 32218269 32378223 32388181 32188126
31878118 31678170 31608247 31648352 31868422
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