ACUS11 KWNS 302134
SWOMCD
MESOSCALE DISCUSSION 1220
NWS STORM PREDICTION CENTER NORMAN OK
0433 PM CDT MON JUN 30 2014
AREAS AFFECTED...PORTIONS OF NORTHERN ILLINOIS AND SOUTHERN
WISCONSIN
CONCERNING...SEVERE THUNDERSTORM WATCH 375...
VALID 302133Z - 302330Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 375
CONTINUES.
SUMMARY...WIDESPREAD DAMAGING WINDS ARE SPREADING ACROSS NORTHERN
ILLINOIS AND SOUTHERN WISCONSIN. EXPECT 60-75-MPH WINDS TO REACH
CHICAGO TO MILWAUKEE DURING THE 545 PM CDT TO 700 PM CDT TIME FRAME.
BRIEF TORNADOES MAY ALSO OCCUR.
DISCUSSION...THE ONGOING MATURE...DERECHO-PRODUCING MCS IS
EXHIBITING AROUND 50-55 KT OF FORWARD MOTION AND HAS LIKELY REACHED
PEAK INTENSITY. WIDESPREAD DAMAGING WINDS HAVE BEEN REPORTED...WITH
A RECENT WIND GUST TO 78 MPH MEASURED IN SWRN WI. THE FAST SYSTEM
MOTION WILL ENHANCE INFLOW AMIDST AN EXTREMELY UNSTABLE AIR MASS TO
SUPPORT MCS MAINTENANCE AND WIDESPREAD DAMAGING WINDS ACROSS NRN IL
AND SRN WI INTO EARLY EVENING. LINEAR EXTRAPOLATION OF THE ONGOING
ACTIVITY TAKES THE SVR-WIND THREAT ACROSS THE CHICAGO AREA AND
MILWAUKEE...PRIMARILY BETWEEN 545 PM CDT AND 700 PM CDT. A FEW BRIEF
TORNADOES WILL ALSO BE POSSIBLE...PARTICULARLY WITH BOOKEND VORTICES
IN SRN WI AND ALONG FLANKS OF PROMINENT REAR-INFLOW JETS.
..COHEN.. 06/30/2014
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LOT...MKX...DVN...
LAT...LON 42258993 43069013 43508903 43148780 41678746 41408811
41488984 42258993
WWWW
����
http://goo.gl/NJE9of
------------------------------------------------
(c) Copyleft 2014 WxNotify. All wrongs reserved.
