On the way to Sterling on Route 30 going to Morrison, I thought I would intercept this fast moving storm. It had produced a large bow-echo on the radar and tornadoes had been reported in the Clinton, IA region, just across the border. When I stopped the SUV, it was still about ninety degrees outside and muggy. These clouds were tumbling right over one another and you could hear the wind rushing through above. Radar indicated sustained shear winds of over 70 MPH! Shortly after my arrival, the storm appeared to become organized and its potential for tornadic threats severely diminished, at least in that area.
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