EF1 tornado in Jefferson County, Illinois

There was shingle damage to houses. Awnings and overhangs were destroyed. Many trees were snapped or uprooted. In the immediate vicinity of the tornado damage path, straight-line winds from the same storm damaged the roof and chimney of a house. Peak winds were around 105 mph. The average path width was 90 yards.

Thunderstorms organized into a bow echo that produced widespread very damaging winds and isolated tornadoes. A shortwave trough over the central and southern high Plains moved northeast through the Mid-Mississippi Valley into the upper Great Lakes. A surface low attendant to this system moved from west central Missouri northeast to north of St. Louis. The trailing cold front advanced southeast across the Lower Ohio Valley and served as the primary focus for thunderstorms.