AREAS AFFECTED...PORTIONS OF NRN IL...NRN IND...SRN LOWER MI
CONCERNING...SEVERE THUNDERSTORM WATCH 504...
VALID 310132Z - 310230Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 504
CONTINUES.
SUMMARY...AN ISOLATED SVR THREAT MAY CONTINUE FOR A COUPLE OF HOURS
BEYOND 02Z ACROSS NRN IL AND POSSIBLY NWRN IND...HOWEVER OVERALL
TRENDS ARE SUCH THAT AN ADDITIONAL WW IS NOT ANTICIPATED AFT 02Z.
DISCUSSION...AN OVERALL WEAKENING TREND HAS BEEN NOTED SINCE 00Z
WITH TSTMS OVER NWRN IND...WHILE INTERMITTENT/ISOLATED SVR TSTMS
PERSIST OVER NRN IL W OF ROCKFORD IN AN AREA OF MODERATE
INSTABILITY. DIURNAL COOLING/INCREASING CINH WILL RESULT IN
GRADUALLY DIMINISHING INSTABILITY WITH TIME...AND THE OVERALL SVR
THREAT BEYOND 02Z IS EXPECTED TO REMAIN ISOLATED AT BEST. ISOLD SVR
TSTMS WILL REMAIN MOST LIKELY OVER NRN IL FOR A COUPLE MORE
HOURS...WHERE MODEST WLY FLOW ABOVE THE BOUNDARY LAYER /SAMPLED BY
THE KDVN VWP/ WILL RESULT IN WAA ATOP THE WRN FLANK OF AN OUTFLOW
BOUNDARY FROM NEAR IKK TO VYS TO SFY.
..BUNTING/CORFIDI.. 08/31/2013
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...DTX...IWX...GRR...LOT...DVN...
LAT...LON 42478982 41858838 41708711 41878647 42818433 42008452
41798483 41398565 40988673 40938767 41418956 42478982
