MESO: Mesoscale Discussion 0508

ACUS11 KWNS 151942
SWOMCD
SPC MCD 151942
FLZ000-152115-

MESOSCALE DISCUSSION 0508
NWS STORM PREDICTION CENTER NORMAN OK
0242 PM CDT SUN APR 15 2007

AREAS AFFECTED...PORTIONS SERN FL AND KEYS.

CONCERNING...TORNADO WATCH 148...

VALID 151942Z - 152115Z

SVR POTENTIAL CONTINUES ALONG/AHEAD OF PRIMARY CONVECTIVE
BAND...ESPECIALLY ACROSS PORTIONS LOWER KEYS WHERE STRONGEST
ACTIVITY INDICATED IN REFLECTIVITY IMAGERY ALSO CORRESPONDS TO ZONE
OF HIGHEST THETAE IN PROJECTED INFLOW LAYER. HOWEVER...OVERALL RISK
WILL DIMINISH DURING NEXT COUPLE HOURS OVER REMAINING LAND
AREAS...AS SHADING AND PRECIP BENEATH CLOUD CANOPY REDUCE PRE-STORM
BUOYANCY...AND AS VEERED SFC FLOW LIMITS SHEAR/CONVERGENCE. ONCE
PRIMARY BAND OF CONVECTION PASSES...WW MAY BE CLEARED FROM
W-E...WITH COLD FRONTAL PASSAGE OCCURRING TOO SOON AFTER INITIAL
TSTM BAND TO PERMIT FURTHER SFC-BASED DESTABILIZATION.

.EDWARDS.. 04/15/2007

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

ATTN...WFO...MFL...MLB...KEY...

24478191 24708155 24818121 24978108 25208111 25608108
26708049 27178020 26698000 26098008 25448020 24898062
24658125

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