Have written an updated forecast for tomorrow on the CA website, here is much of what was written. Pictures and skew-t's can be viewed at the link below:
http://convectiveaddiction.com/2010/05/06/fcst-050710-miinoh/
"A favorable kinematic environment will support the development of severe weather across the region on Friday afternoon as LI values reach -5 to -7 C across the warm sector, melded with a 40-50kt LLJ oriented from the SSW. If the NAM does indeed verify, 850 mb winds will be backed even further than currently depicted by the GFS, owing to a deeper 850 mb low as it moves into southern Lake Michigan by 21z Friday. Strong diffluence will be aided by an enhanced 70-80 kt mid-level jet streak that noses into the region, aggrandizing shear profiles and creating an environment very conducive to rotating updrafts.
A significant 100-120 kt upper-level jet streak moving from the Central Plains into the Great Lakes region will enhance shear profiles, with upper air divergence enhancing storm growth, maturity and longevity. These upper air profiles will be congruous with backed surface winds, increasing low-level curvature, especially in close propinquity to the surface low.
Morning convection across the region will likely be elevated in nature, but should become more surface-based into the afternoon hours as more favorable low-level dynamics work into the region. The robust nature of this system will engender a respectable Theta-E axis across eastern Indiana and western Ohio on the order of 340K.
It should be noted that this is not an archetypal Great Plains severe weather setup. CAPE values AOA 500 J/KG, coupled with the attendant dynamic environment, have historically been plenteous enough to generate tornadic supercells."