Yeah, I found that interesting... I was at work and heard someone say 'tornado warning' on their phone, so I took a quick look at the computer again and saw the law enforcement report. There were a few different severe convective cells that moved through Detroit Metro today... For that matter, there were two SVR-warned storms in my county alone (both of which were verified by penny-sized and nickel-sized hail reports -- both south and just northeast of where I was at the time LMAO) along with a brief supercell structure that propogated south of I-94 near Ann Arbor, which produced the golfball-sized hail report. The environment was undoubtedly supportive of large hail today, with relatively-low wet-bulb zero levels (~9000ft AGL across much of the area) and strong CAPE (with >200j/kg of 0-3km low-level CAPE, per earlier RUC mesoanalysis) and cold 500mb temperatures (generally -13C across southeast MI) for this time of year. In addition, the strong 40-50kt 0-6km deep-layer shear (enhanced by the SW 40-50kt midlevel flow) induced rotation in a few of the boundary-layer rooted updrafts, which contributed to further intensification. I didn't get a real good look at the Monroe Co tornadic storm on radar, but it looked to be a small, low-topped storm that apparentley stretched near-ground vorticity that it had available (perhaps it interacted with a mesoscale outflow boundary from previous convection or some type of baroclinic sfc boundary that gave it a source of low-level vorticity to stretch and tilt vertically) with enhanced low-level accelerations provided by the substantial amounts of CAPE in the lowest 3-km.
The one storm that become SVR-warned in Macomb Co earlier didn't look at all impressive... Nonetheless, it still produced the nickel-sized hail report just south of me and still gave me 45-55mph winds in Clinton Twp (estimated -- just below severe levels) and had decently-high reflectivities on radar (i.e. 60-65dbz core).
