Below are some quotes from the “Area Forecast Discussion” that the northern Indiana office of the National Weather Service issued at 3:33 p.m. EDT.
“All high-resolution models seem to point toward rapid formation of storms (from central Lake Michigan into Iowa) in the 2100Z to 2300Z (5 p.m. EDT to 7 p.m. EDT) time frame. The initial storm mode should be multi-cell clusters with some supercells that will produce hail and damaging winds, along with some tornado threat.
“All signs continue to point toward an increasing severe threat this evening.”
“Training of cells will be possible with inherent threat for flooding.”