Skip Navigation Links 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Mesoscale Discussion 1178
< Previous MD         Next MD >
MD 1178 graphic

   Mesoscale Discussion 1178
   NWS Storm Prediction Center Norman OK
   0753 PM CDT Wed Jun 28 2017

   Areas affected...Northeast IA...Southern WI...Northern IL

   Concerning...Tornado Watch 375...377...378...

   Valid 290053Z - 290230Z

   The severe weather threat for Tornado Watch 375, 377, 378 continues.

   SUMMARY...Severe threat continues.

   DISCUSSION...MCS continues to mature as it becomes elongated in an
   east-west fashion from northeast IA, east along the WI/IL border.
   This complex of storms is sagging south at roughly 15kt with an
   eastward surge on the order of 30kt along the leading squall line.
   Given this speed/movement, it appears strong convection will
   approach the northern Chicago metro between 0200-0230z and around
   0200z for the near-lake MI region of southeast WI. As the complex
   becomes oriented more east-west there will be a propensity for
   training across this region deep into the evening hours.

   ..Darrow.. 06/29/2017

   ...Please see for graphic product...


   LAT...LON   42389173 42808962 43348796 42018789 41939002 41779160

Top/All Mesoscale Discussions/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us

NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
Page last modified: June 29, 2017
Information Quality
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities