Day 1 Outlook Day 2 Outlook Day 3 Outlook Days 4-8 Outlook

Day 1 Outlook Convective Tornado
Hail Wind
Categorical Day1 0100Z Outlook
  
Images courtesy of the NWS Storm Prediction Center
 Forecast Discussion

  
968 
ACUS01 KWNS 180059
SWODY1
SPC AC 180058

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0758 PM CDT Sun Jun 17 2018

Valid 180100Z - 181200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PORTIONS OF
THE CENTRAL PLAINS INTO THE UPPER GREAT LAKES...

...SUMMARY...
Scattered strong/severe thunderstorms will continue this evening
along a corridor from southwestern Nebraska into Wisconsin. Hail and
wind are the primary threats.

...Central Plains to Upper Great Lakes...

A narrow corridor of frontal convection has developed from
southwestern NE into southeast SD with a more extensive MCS located
downstream across WI into the eastern U.P. of MI. The upper Great
Lakes MCS is expected to sag slowly southeast across central WI over
the next several hours and isolated damaging winds and perhaps some
hail may be noted with this activity, although heavy rain may become
the dominant threat by mid evening.

18/00z LBF sounding exhibits substantial CAPE with adequate shear
for the maintenance of organized updrafts and perhaps even a few
weak supercells. Hail will continue to be the greatest risk with
this activity as it spreads/develops northeast along the frontal
zone. Overall severe threat should gradually wane by late evening,
although LLJ is expected to provide ascent for convection continuing
through the overnight hours.

..Darrow.. 06/18/2018

$$