[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 102230
SWOMCD
SPC MCD 102230 
INZ000-ILZ000-110000-

MESOSCALE DISCUSSION 1176
NWS STORM PREDICTION CENTER NORMAN OK
0530 PM CDT THU JUN 10 2004

AREAS AFFECTED...NRN IL/NWRN IN

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 102230Z - 110000Z

...ADDITIONAL WATCH MAY BE NEEDED...

SYNOPTIC WARM FRONT LIES ACROSS NRN IL JUST SOUTH OF CHICAGO AND
INTO NRN INDIANA. ANOTHER BOUNDARY...PERHAPS FORMED BY DIFFERENTIAL
HEATING...EXTENDS ALONG A MACOMB/DECATUR LINE ACROSS CNTRL IL. IN
BETWEEN THESE TWO BOUNDARIES...ENVIRONMENTAL WINDS ARE SELY WITH
RICH SFC MOISTURE / DEWPOINTS IN THE LOW/MID 70S / . WV IMAGERY
SHOWS A VORT MAX OVER NRN MO...WHICH WILL ENHANCE LARGE SCALE LIFT
AND INCREASE DEEP LAYER SHEAR ACROSS IL/IN TONIGHT. IN
ADDITION...LOW LEVEL FLOW IS FORECAST TO INCREASE TO 20-40 KT AFTER
00Z TONIGHT WHICH WILL MAINTAIN HIGH VALUES OF LOW LEVEL SHEAR.
LATEST VAD WINDS FROM ST. LOUIS SUGGEST 0-1KM SHEAR VALUES ALREADY
IN THE 25-30 KT RANGE. THREAT WILL INCREASE FOR MINI-SUPERCELLS
THROUGH THE EVENING AS SRN BOUNDARY MOVES NORTH...AND WIND FIELDS
STRENGTHEN.

..TAYLOR.. 06/10/2004

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

ATTN...WFO...IWX...IND...LOT...ILX...DVN...

40308658 41379025 42498964 41828764 41258611 40408623 

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