Don't believe I've been in a PDS SVR watch that mentioned the possibility of 100 MPH gusts before. Although, extrapolating radar the action will miss Madison to the south, unless the northern edge of the MCS expands significantly. Not sure what to make of the convective cells moving NW-SE over northeast Iowa, while an E-W oriented band appears to be filling in and moving NORTH around Waterloo. That's going to crash into the SE moving cluster south of Decorah at some point, not sure what the resulting evolution and motion will be.