Well, it's now the 17th, and not only do we still have the MDT risk in about the same place as was forecast yesterday for today, it's 8AM ET and we've already got a couple of good lines of storms moving through severe thunderstorm and tornado watches to the west of the MDT area.  And the Day 2 MDT zone is now far larger than the Day 3 MDT zone was yesterday.  In fact, the WSO GRR Hazardous Weather Outlook for today says that "a severe weather outbreak is expected across southern lower Michigan" tomorrow.  The only thing that makes me wonder if the computers have gone nuts is that the high is only forecast to be around 70F in the MDT zone tomorrow, which seems rather low for such a high probability of severe weather.  Still, potential for something big is definitely here.