SWOMCD
SPC MCD 261212
ALZ000-FLZ000-MSZ000-LAZ000-261345-
MESOSCALE DISCUSSION 0593
NWS STORM PREDICTION CENTER NORMAN OK
0712 AM CDT THU APR 26 2007
AREAS AFFECTED...SWRN AL
CONCERNING...TORNADO WATCH 190...
VALID 261212Z - 261345Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 190 CONTINUES.
THE POTENTIAL FOR ISOLATED DAMAGING WINDS AND PERHAPS A TORNADO IS
EXPECTED TO CONTINUE BEYOND 13Z...MAINLY INTO THE FL PNHDL AND FAR
SRN AL. ALTHOUGH AN ADDITIONAL WW IS NOT ANTICIPATED CONVECTIVE
TRENDS ARE BEING MONITORED.
SLOW MOVING LINEAR MCS CONTINUES THIS MORNING FROM N OF MOB TO JUST
W OF BVE WITHIN MOIST LOW-LEVEL AIR MASS CHARACTERIZED BY DEWPOINTS
OF 65-70 F. THIS SYSTEM APPEARS TO BE UNDERGOING A DIURNAL
WEAKENING TREND WITH A DECREASE IN STORM INTENSITY NOTED OVER SWRN
AL. LATEST VWP FROM MOB INDICATES THAT WIND PROFILE HAS SHOWN AN
INCREASING TENDENCY FOR VEERING THEN BACKING WITH HEIGHT...WITH A
GENERAL DECREASE IN LOW-LEVEL SHEAR. STILL...DEEP LAYER VERTICAL
SHEAR REMAINS SUFFICIENTLY STRONG TO SUPPORT UPDRAFT ROTATION WITH
40-45 KT OBSERVED IN THE LOWEST 6 KM AGL.
WHILE SOME THREAT FOR LOCALLY DAMAGING WINDS AND PERHAPS A TORNADO
OR TWO WILL CONTINUE THROUGH MID MORNING...IT APPEARS THAT BETTER
POTENTIAL WILL EXIST BY LATE MORNING INTO THIS AFTERNOON AS BOUNDARY
LAYER HEATS AND DESTABILIZES.
.MEAD.. 04/26/2007
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...BMX...MOB...LIX...
32228807 31968734 29868696 29508834 28408907 28638954
30518997 30868927 30848894 31218875
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