[MCD] SWOMCD

Fri Aug 25 23:36:49 UTC 2006

ACUS11 KWNS 252338
SWOMCD
SPC MCD 252338 
INZ000-ILZ000-WIZ000-IAZ000-260145-

MESOSCALE DISCUSSION 1887
NWS STORM PREDICTION CENTER NORMAN OK
0638 PM CDT FRI AUG 25 2006

AREAS AFFECTED...NRN IL...EXTREME E-CNTRL IA

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 252338Z - 260145Z

ISOLATED SEVERE THREAT WILL CONTINUE FOR THE NEXT COUPLE OF HOURS
ACROSS PORTIONS OF NRN IL AND INTO EXTREME E-CNTRL IA. SEVERE THREAT
WILL REMAIN TIED TO FRONTAL/DIFFERENTIAL HEATING BOUNDARY DRAPED
FROM W TO E. ACTIVITY SHOULD GRADUALLY DIMINISH THIS EVENING WITH
LOSS OF DAYTIME HEATING. A WW IS NOT ANTICIPATED.

AS OF 2330Z...AN ISOLATED SUPERCELL WITH A HISTORY OF DAMAGING WIND
WEAKENED AS IT MOVED EWD INTO DEKALB COUNTY IL. HOWEVER...ADDITIONAL
ACTIVITY HAS REDEVELOPED FURTHER W INTO CLINTON COUNTY IA. REGIONAL
VAD WIND PROFILERS INDICATE SUFFICIENT 0-6 KM SHEAR /AROUND 40
KTS/...WHICH WILL SUPPORT CONTINUED STORM ORGANIZATION. COMBINED
WITH A MODERATELY UNSTABLE AIR MASS IMMEDIATELY TO S OF THE
FRONT...ISOLATED SEVERE WIND GUSTS WILL REMAIN POSSIBLE. ACTIVITY
SHOULD NOT DEVELOP FURTHER S INTO CNTRL IL...DUE TO STRONGER CAPPING
INVERSION AS WELL AS GREATER STABILIZATION FROM CONVECTION EARLIER
THIS MORNING.

..GRAMS.. 08/25/2006

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

ATTN...WFO...LOT...MKX...DVN...

41428810 41538921 41719003 41859053 42139075 42389061
42558986 42538887 42378812 41988758 41378745 

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