ACUS11 KWNS 221415
SWOMCD
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
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