The National Weather Service radar this afternoon indicated five tornadoes in the area, two of which were confirmed to touch ground.
Radar reports spotted formations between Coleta and Milledgeville in northern Whiteside County, where a touchdown was confirmed by the NWS office in the Quad Cities. The others were southwest of Polo in Ogle County, and near Thomas in northwestern Bureau County.
The Ogle County Sheriff Department reported a touchdown of around 4:30 p.m. near the intersection of Chana and Husking Peg roads north of Flagg Road near Chana. The system headed northeast.
Sheriff departments in Whiteside, Lee, Ogle and Carroll counties reported no major storm-related damage, but a machine shed at 5243 E. Canfield Road in Chana was destroyed, sending siding and other debris blowing, and downing power lines. The mess forced the closure of the road.
Systems near Coleta and Thomas were detected around 2:15 p.m.
The one in Coleta moved northeast toward southeast Carroll County and into southwestern Ogle County, and the one near Thomas moved northeast into southeast Whiteside County near Deer Grove.
The system near Polo was detected at around 1 p.m. and also moved northeast.
A detection also was spotted near the Savanna Army Depot in the northwest corner of Carroll County at 3 p.m., also heading northeast.
A funnel cloud was seen near the outskirts of northwest Sterling around 1 p.m..
Tornado warnings last about an hour since the last indicated radar reading of a formation; the range of the warning typically is a cone shape that fans from the detection location.
Tornados indicated by radar do not necessarily indicate a touchdown. Confirmations of touchdowns are typically confirmed hours later by the National Weather Service, unless reported by a trained weather spotter.
The NWS reported a wall cloud, an indication of tornado activity, near East Moline in Rock Island County around 1 p.m. and issued a tornado warning along its northeasterly path, which included Erie, Fenton and Spring Hill in southwestern Whiteside County.
A wall cloud is a large, localized, persistent, and often abrupt lowering of cloud that develops beneath the base of a cumulonimbus cloud. They can rotate, and a rotating wall cloud is the area of a thunderstorm that is most likely to produce tornadoes, and the vast majority of intense tornadoes, the NWS says. They normally are found on the south or southwest side of the thunderstorm.