SWOMCD
SPC MCD 260359
MIZ000-INZ000-ILZ000-260500-
MESOSCALE DISCUSSION 1040
NWS STORM PREDICTION CENTER NORMAN OK
1059 PM CDT SUN MAY 25 2008
AREAS AFFECTED...CNTRL/NERN IL...NWRN IND
CONCERNING...SEVERE POTENTIAL...SEVERE THUNDERSTORM WATCH LIKELY
VALID 260359Z - 260500Z
QLCS STRETCHING FROM FAR SRN WI/NWRN IL INTO S-CNTRL IA SHOULD
CONTINUE TO TRANSLATE EWD FIRST INTO NERN IL AND THEN INTO CNTRL IL.
PRIMARY THREAT WILL LIKELY BE DAMAGING WINDS GIVEN PROGRESSIVE
BOW/LEWP NATURE OF LINE OVER S-CNTRL IA ATTM. A SEVERE TSTM WATCH
ISSUANCE IS LIKELY BY 05Z.
RECENT SUBJECTIVE SURFACE ANALYSES DEPICT A GRADUAL RISE IN SURFACE
DEW POINTS ACROSS CNTRL IL INTO NWRN IND...INTO THE MID 50S TO MID
60S AS OF 03Z. AS SUCH...LATEST OBJECTIVE ANALYSIS INDICATES THE AIR
MASS HAS BECOME MODERATELY UNSTABLE...WITH MUCAPES AROUND 1000 TO
2000 J/KG. WITH CONCENTRATED SURFACE PRESSURE FALLS WITHIN THIS
REGION INDICATIVE OF LIFT ASSOCIATED WITH LOW-LEVEL WAA...A
MAINTENANCE OF STRONG/SEVERE TSTMS OVER S-CNTRL IA INTO NWRN IL IS
EXPECTED THROUGH THE NEXT SEVERAL HOURS. ALTHOUGH ISOLATED DAMAGING
WINDS/MARGINAL SEVERE HAIL REMAIN POSSIBLE ALONG THE W/E-ORIENTED
PORTION OF THE QLCS...A MORE SIGNIFICANT THREAT FOR SEVERE WIND
GUSTS WILL LIKELY CONTINUE WITH POSSIBLY AN EMBEDDED LOCALIZED
TORNADO GIVEN THE PROGRESSIVE N/S-ORIENTED BOW/LEWP MOVING THROUGH
S-CNTRL IA.
..GRAMS.. 05/26/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...IWX...IND...LOT...ILX...LSX...DVN...
41768678 41348686 40328750 39788905 39689012 39859065
40159095 40759052 41069022 41198911 41928865 42358845
42268766
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