SWOMCD
SPC MCD 072256
INZ000-ILZ000-MOZ000-IAZ000-080000-
MESOSCALE DISCUSSION 0748
NWS STORM PREDICTION CENTER NORMAN OK
0556 PM CDT THU MAY 07 2009
AREAS AFFECTED...CENTRAL IL/WESTERN INDIANA/NORTHEAST MO
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 072256Z - 080000Z
DAMAGING WINDS/SEVERE HAIL MAY CONTINUE OVER THE NEXT SEVERAL HOURS
ACROSS EAST CENTRAL IL INTO WESTERN INDIANA...WITH ADDITIONAL
DEVELOPMENT ACROSS NORTHEAST MO INTO WEST CENTRAL IL. A WATCH
APPEARS LIKELY.
STRONG/SEVERE TSTMS CONTINUE TO CONSOLIDATE ALONG THE I-55 CORRIDOR
NEAR/NORTH OF SPRINGFIELD IN CENTRAL IL AS OF 2240Z. THIS ACTIVITY
IS OCCURRING ALONG A WEAK WARM FRONT/SURFACE MOISTURE
GRADIENT...LIKELY AIDED BY A MID LEVEL SPEED MAXIMA PER REGIONAL
PROFILERS/WSR-88D VWPS. THE WARM BOUNDARY LAYER AHEAD OF THE
MAJORITY OF THE EVOLVING MCS HAS TENDED TO MIX AGGRESSIVELY...BUT A
MODEST/EXPANDING COLD POOL AND MOISTURE FEED FROM THE WEST-SOUTHWEST
COULD SUPPORT FURTHER UPSCALE GROWTH...WITH A DAMAGING WIND/HAIL
THREAT CONTINUING EAST-SOUTHEASTWARD ACROSS EAST CENTRAL IL/PERHAPS
WESTERN INDIANA. OTHERWISE...FARTHER WEST...ALSO MONITORING FOR A
POSSIBLE WATCH ACROSS NORTHEAST MO/WEST CENTRAL IL IN ASSOCIATION
WITH UPSTREAM MCS ACROSS NORTHERN MO.
..GUYER.. 05/07/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...IND...ILX...LSX...DVN...
LAT...LON 40709155 40228823 39648692 38598781 39589203 40709155
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