Get your galoshes ready:
From city of Rochester emergency management:
Heavy rainfall is expected to occur Tuesday night into Wednesday morning with 1 to 3 inches forecast to drop. Locally higher amounts could occur, which may lead to some flash flooding. Some uncertainty still exists with where this heavy rain will fall, but currently it appears that much of the region faces this threat Tuesday night into Wednesday. The potential is also there for some storms to produce large hail and damaging winds, particularly in northeast Iowa and far southwest Wisconsin.