SWOMCD
SPC MCD 191527
INZ000-MIZ000-191630-
MESOSCALE DISCUSSION 1232
NWS STORM PREDICTION CENTER NORMAN OK
1027 AM CDT FRI JUN 19 2009
AREAS AFFECTED...PARTS OF SRN LOWER MI INTO NRN AND CNTRL IND
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 191527Z - 191630Z
THE THREAT FOR SEVERE STORMS CAPABLE OF DAMAGING WINDS...HAIL AND
PERHAPS A COUPLE OF TORNADOES IS EXPECTED TO INCREASE LATE THIS
MORNING INTO AFTERNOON. A WW WILL BE REQUIRED.
ONGOING STRONG/SEVERE STORMS OVER THE CHI METRO SHOULD CONTINUE TO
INTENSIFY THIS MORNING WHILE MOVING/DEVELOPING EWD/SEWD INTO PARTS
OF SWRN LOWER MI AND NRN IND. ADDITIONAL STORMS ATTEMPTING TO
BECOME SUSTAINED FROM JUST NE PIA TO ENE BMI SHOULD ALSO INCREASE IN
COVERAGE AND INTENSITY WHILE SHIFTING INTO CNTRL IND.
ABOVE-MENTIONED STORMS WILL REMAIN FOCUSED ALONG AND N OF A
WELL-DEFINED OUTFLOW BOUNDARY EXTENDING FROM DNV TO NW OF LUK.
GIVEN THE MOIST BOUNDARY LAYER CONDITIONS AND POTENTIAL FOR RATHER
STRONG DIABATIC HEATING...AIR MASS IS EXPECTED TO BECOME MODERATELY
UNSTABLE LATER TODAY WITH MLCAPE APPROACHING 1500-2500 J/KG.
CURRENT PROFILER DATA OVER NWRN IND N OF OUTFLOW BOUNDARY INDICATES
CONSIDERABLE VEERING IN THE LOWEST 2 KM WITH 50-55 KT OF DEEP-LAYER
SHEAR. AS SUCH...ENVIRONMENT IS FORECAST TO BECOME INCREASINGLY
SUPPORTIVE OF SUPERCELL AND BOWING STRUCTURES CAPABLE OF DAMAGING
WINDS...HAIL AND PERHAPS TORNADOES.
..MEAD.. 06/19/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...ILN...IWX...IND...LOT...
LAT...LON 40048748 41188740 42098665 42018576 41408488 40268485
39408532 39458633 40048748
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