[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 262231
SWOMCD
SPC MCD 262231 
FLZ000-GAZ000-ALZ000-270000-

MESOSCALE DISCUSSION 0697
NWS STORM PREDICTION CENTER NORMAN OK
0531 PM CDT TUE APR 26 2005

AREAS AFFECTED...EXTREME SERN AL...SWRN GA...FL PNHDL

CONCERNING...SEVERE THUNDERSTORM WATCH 207...

VALID 262231Z - 270000Z

A COUPLE OF SEVERE STORMS WITH HIGH WINDS AND LARGE HAIL ARE STILL
POSSIBLE ACROSS EASTERN AND SRN PORTIONS OF SEVERE TSTM WATCH 207
FOR ANOTHER COUPLE OF HOURS. GREATEST POTENTIAL FOR STRONG TO SEVERE
STORMS MAY EXIST IN A NARROW CORRIDOR FROM CHOCTAWHATCHEE BAY NEWD
TO SWRN GA WHERE GREATER SURFACE HEATING AND DESTABILIZATION HAVE
OCCURRED.

A BROKEN LINE OF INTENSE UPDRAFTS WAS LOCATED NEAR A WEAK SFC
LOW...TROUGH AXIS...AND WARM FRONT FROM WALTON COUNTY TO JACKSON
COUNTY IN THE FL PNHDL. STRONG DEEP LAYER WLY FLOW ACROSS THIS
ACTIVITY WAS RESULTING IN STRONGLY SHEARED UPDRAFTS AND FAST MOVING
STORMS. LATEST RUC SOUNDINGS FROM THE AREA INDICATE WARM AIR IN THE
850-700MB LAYER...PERHAPS LIMITING UPDRAFT STRENGTH. HOWEVER...FCST
THERMODYNAMIC PROFILES FARTHER EAST AND WITH TIME SUGGEST A GRADUAL
EROSION OF THIS LAYER. GIVEN CONTINUATION OF STRONG FORCING FOR
ASCENT ASSOCIATED WITH UPPER TROUGH AND ASSOCIATED SFC
FEATURES...AND POTENTIAL FOR ACTIVITY TO MOVE TOWARD A REGION WITH
GREATER INSTABILITY...SEVERE THREAT IS EXPECTED TO PERSIST ACROSS
VALID PORTIONS OF THE WATCH THIS EVENING.

..CARBIN.. 04/26/2005

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

ATTN...WFO...TAE...MOB...

29898450 29748703 30458650 31238566 31318446 

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