If deteriorating conditions continue at the recent pace, by next week the drought will be its worst since 2013.
Video shows an 18-wheeler driving past a tornado just before it levels a barn and moves across a highway in Gilmore City.
No one was injured after severe weather and at least two tornadoes swept through Iowa on Tuesday evening.
A city staffer is expected to climb the tower later Tuesday to see what's wrong and determine how to fix the problem.
Powerful solar flares may create spectacular Aurora Borealis displays across the northern U.S. and as far south as Des Moines.