ACUS11 KWNS 212042
SWOMCD
MESOSCALE DISCUSSION 1107
NWS STORM PREDICTION CENTER NORMAN OK
0341 PM CDT SAT JUN 21 2014
AREAS AFFECTED...PORTIONS OF NRN/WRN IL...NERN MO...NWRN IND
CONCERNING...SEVERE THUNDERSTORM WATCH 340...
VALID 212041Z - 212145Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 340
CONTINUES.
SUMMARY...THE SEVERE THREAT CONTINUES ACROSS THE WW AREA.
DISCUSSION...CLUSTERS OF SVR TSTMS WERE IN PROGRESS AT 2030Z ACROSS
MAINLY THE SRN/ERN PORTIONS OF WW 340 WITH REPORTS OF UP TO
GOLFBALL-SIZE HAIL AND ISOLATED SVR WIND GUSTS. THE OVERALL
ENVIRONMENT REMAINS SUPPORTIVE OF A CONTINUED SVR THREAT WITH
MOD-STRONG SFC-BASED INSTABILITY...WITH STRONGER EFFECTIVE SHEAR
/30-35 KTS/ ACROSS THE NRN HALF OF WW AREA IN ASSOCIATION WITH
REMNANT MCV OVER SRN WI. A SFC BOUNDARY EXTENDS SWD FROM A WEAK SFC
LOW OVER CENTRAL WI INTO NWRN IL...AND ADDITIONAL SVR TSTM
DEVELOPMENT IS POSSIBLE OVER WRN PORTIONS OF WW AREA THROUGH 02Z.
WHERE TSTMS MERGE INTO ONE OR MORE CLUSTERS...A MORE CONCENTRATED
WIND DAMAGE THREAT MAY EXIST.
..BUNTING.. 06/21/2014
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LOT...ILX...MKX...LSX...DVN...
LAT...LON 42528957 42458791 41548708 41108702 40548721 40498775
39608971 39289110 39419201 39799228 40419140 42528957
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