Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0801 PM CDT Thu Apr 02 2026

Valid 030100Z - 031200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
THE SOUTHERN GREAT LAKES REGION...

...SUMMARY...
Ongoing severe thunderstorms across the Great Lakes this evening
will remain capable of producing damaging thunderstorm winds, a
couple of tornadoes, and some hail into the overnight hours.

... 01Z Update ...

A vigorous, negatively tilted trough continues to lift northeast
across the Upper Great Lakes this evening. Ahead of this wave,
strong ascent is supporting multiple clusters/bands of severe
convection across the Great Lakes -- one currently across Indiana
and Michigan within the cyclone's warm-conveyor belt and another
across Illinois and Wisconsin along the combined Pacific front and
dryline. 

Despite the loss of diurnal heating, strong large-scale ascent and
low-level convergence along the front/dryline will support
thunderstorms into the overnight. Although the overall intensity of
the thunderstorms will gradually decrease with time, the strength of
the low-level wind fields will support a continued wind threat into
Lower Michigan overnight, with a modest QLCS-type tornado threat.

..Marsh.. 04/03/2026