[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 262317
SWOMCD
SPC MCD 262316 
GAZ000-FLZ000-270115-

MESOSCALE DISCUSSION 2264
NWS STORM PREDICTION CENTER NORMAN OK
0616 PM CDT SUN SEP 26 2004

AREAS AFFECTED...NRN FL THROUGH SE GA

CONCERNING...TORNADO WATCH 841...

VALID 262316Z - 270115Z

BEST THREAT FOR ISOLATED TORNADOES THROUGH 02Z IS EXPECTED FROM NERN
FL NEAR THE JACKSONVILLE AREA NWD INTO PART OF SERN GA.

EARLY THIS EVENING THE CENTER OF TROPICAL STORM JEANNE WAS LOCATED
OVER THE NWRN FL PENINSULA AND CONTINUES TO MOVE IN A GENERAL NNWWD
DIRECTION. PERSISTENT ELY LOW LEVEL FLOW HAS RESULTED IN A VERY
MOIST BOUNDARY LAYER WITH SURFACE DEWPOINTS IN THE MID 70S ADVECTING
ONSHORE ACROSS NE FL AND INTO SE GA CONTRIBUTING TO SLIGHTLY HIGHER
INSTABILITY. THE WWD MOVING RAINBANDS IN THE NE QUADRANT OF THE
STORM ARE COLOCATED WITH THE BETTER INSTABILITY AND VERY STRONG LOW
LEVEL SHEAR WITH 0-1 KM STORM RELATIVE HELICITY IN EXCESS OF 300
M2/S2. CURRENT RADAR DATA SHOW STRONG VELOCITY COUPLETS WITHIN THE
MORE DISCRETE CONVECTIVE ELEMENTS MOVING WWD INTO THE JACKSONVILLE
AREA. DISCRETE CELLS WITHIN THESE OUTER BANDS WILL CONTINUE TO HAVE
THE BEST POTENTIAL TO PRODUCE ISOLATED TORNADOES NEXT FEW HOURS.
BEST THREAT AREA WILL GRADUALLY SHIFT NWD INTO SE GA WITH TIME.

..DIAL.. 09/26/2004

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

ATTN...WFO...CHS...JAX...

29308061 29888137 30378270 31728195 30748057 

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