These pictures were taken from a friend's house just east of Congerville Tuesday aroun 4:00 pm. The pictures are facing South towards Danvers...the road in the picture is HW 150.
We were feeding horses when we noticied some strange looking clouds to the South. There had been a small cell of thunderstorms moving through the area. We went outside and the strange looking clouds had become two very pronounced funnels. The one on the left was very thin and as we watched it came half way to the ground (I heard reports later from people in Carlock that it had touched all the way). The funnel on the left was thicker and didn't come down any further. There were reports of five (total) funnels within a 30 minute span.
We called 911 to report these funnels and were told that spotters were out and that they were cold-air funnels that weren't dangerous. There were no warnings or watches out during this time and no sirens went off.
The following is a definition of a cold air funnel from Wikepedia.com:
"Cold-air funnel clouds (vortices) are usually short-lived and generally much weaker than the vortices produced by supercells. Although cold-air funnels rarely make ground contact, they may touch down briefly and become weak tornadoes or waterspouts.
Unlike the related phenomenon associated with severe thunderstorms, cold-air funnels are generally associated with partly cloudy skies in the wake of cold fronts, where atmospheric instability and moisture is sufficient to support towering cumulus clouds but not precipitation. The mixing of cooler air in the lower troposphere with air flowing in a different direction in the middle troposphere causes the rotation on a horizontal axis, which, when deflected vertically by atmospheric conditions, can become a funnel cloud."