I have been watching wunderground.com and there have been numerous tornado and mesocyclones all along that band of storms.
I arrived in Detroit (for work) at 4pm. Roger was heading to Detroit (for work at 545pm) when his truck was hit with a tree limb in the area of US 23 and M 59. The sirens have been going off here at work since 630pm.
While watching the radar of Grand Blanc the pink triangle came up in the area of our house. I am in the process of contacting my parents to see if my house has still got a roof.