
MESOSCALE DISCUSSION 0249
NWS STORM PREDICTION CENTER NORMAN OK
1116 PM CDT SUN APR 04 2010
AREAS AFFECTED...MO...WCNTRL IL
CONCERNING...SEVERE THUNDERSTORM WATCH 46...
VALID 050416Z - 050515Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 46
CONTINUES.
BACK EDGE OF STRONG CONVECTION IS PROGRESSING STEADILY EWD ACROSS
ECNTRL MO/WCNTRL IL. THIS ACTIVITY APPEARS TO BE TIED CLOSELY TO
THE SWRN FLANK OF EJECTING SHORTWAVE TROUGH. AS THIS FEATURE SHIFTS
DOWNSTREAM...TRAILING WIND SHIFT/FRONTAL ZONE WILL STALL ALONG THE
I-44 CORRIDOR...ESSENTIALLY BIFURCATING THE CURRENT WATCH. GIVEN
THIS EXPECTED EVOLUTION...WEAK WARM ADVECTION MAY ALLOW CONVECTION
ACROSS NERN OK/SERN KS TO SPREAD INTO SWRN PORTIONS OF MO OVER THE
NEXT FEW HOURS.
..DARROW.. 04/05/2010
ATTN...WFO...PAH...ILX...LSX...SGF...EAX...