I am a spotter for the national weather service. I was driving home from CR to Dubuque tonite and saw a severe thunderstorm. After searching the back end of the storm for signs of a tornado, i found this wall cloud. Others have reported the tubular white cloud extending from the leading edge of the wall cloud as a funnel cloud, but I do not feel that it was a funnel as there was no rotation.
Wall Cloud promtping tornado warning 7-1
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