Strong thunderstorms affecting Tri Cities, heading for the Thumb & SE Michigan - likely to intensify

The small cells which formed over Mid Michigan have rapidly intensified into a multicell line and are entering an even more unstable environment as they move east.  Instability will only increase with time ahead of these storms.  I fully expect at least one or two of these cells to be severe warned shortly as wet micro bursts may begin to occur; the one just north of Flint in particular has an echo top reaching 50,000 feet.  So far, I'm only seeing indications of moderately heavy rains, though.  The storm near Birch Run looks like it may drop some hail, too, but I doubt it will be severe hail.