ZCZC SPCSWOMCD ALL
ACUS11 KWNS 221414 
SPC MCD 221414 
INZ000-MIZ000-ILZ000-WIZ000-221515-

MESOSCALE DISCUSSION 1117
NWS STORM PREDICTION CENTER NORMAN OK
0914 AM CDT MON JUN 22 2015

AREAS AFFECTED...SOUTHERN WI/NORTHERN IL/NORTHWEST INDIANA

CONCERNING...SEVERE POTENTIAL...WATCH NEEDED SOON 

VALID 221414Z - 221515Z

PROBABILITY OF WATCH ISSUANCE...95 PERCENT

SUMMARY...A SEVERE MCS WILL LIKELY CONTINUE EAST-SOUTHEASTWARD FROM
SOUTHWEST WI AND NORTHEAST/EAST-CENTRAL IA INTO ADDITIONAL PORTIONS
OF SOUTHERN WI/NORTHERN IL/NORTHWEST INDIANA...WITH A
CORRIDOR/POSSIBLE SWATH OF DAMAGING WINDS REMAINING LIKELY.

DISCUSSION...A HIGHLY ORGANIZED QUASI-LINEAR MCS WITH EARLY MORNING
HISTORY OF SEVERE WIND GUSTS /AND EVEN WAKE LOW-RELATED GUSTS/
CONTINUES TO STEADILY SPREAD EAST-SOUTHEASTWARD ACROSS SOUTHWEST WI
AND NORTHEAST/EAST-CENTRAL IA AS OF 14Z. WHILE CLOUD COVER PRECEDES
THE MCS ACROSS NORTHERN IL/SOUTHERN WI...MODEST WARMING/MOISTENING
CONTINUES TO OCCUR IN TANDEM WITH A WARM FRONT THAT EXTENDS
EAST-SOUTHEASTWARD AHEAD OF THE MCS. THIS ENVIRONMENTAL
SCENARIO...ALONG WITH THE HIGHLY ORGANIZED/FAST-MOVING NATURE OF THE
MCS...SUGGESTS THAT THE POTENTIAL FOR POTENTIALLY WIDESPREAD
DAMAGING WINDS WILL CONTINUE TO QUICKLY SPREAD EAST-SOUTHEASTWARD
ACROSS MUCH OF NORTHERN IL/SOUTHERN WI/NORTHWEST INDIANA.

..GUYER/GOSS.. 06/22/2015

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

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

LAT...LON   43568918 43538797 42718653 41448638 40828736 41479041
            42068961 42578924 43568918 

NNNN