National Weather Service United States Department of Commerce

Dayton (Marengo County) EF-2 Tornado
April 15, 2011

Estimated Maximum Wind:
125 mph
Damage Path Length:
10.9 miles
Maximum Path Width:
600 yards
Approximate Start Point/Time:
1.6 NW Linden Airport
32.2884/-87.7380  535 pm
Approximate End Point/Time:
1.1 SSE Siddonsville
32.3862/-87.5921  553 pm 

National Weather Service meteorologists surveyed the damage near Dayton. It has been determined that the damage was consistent with a tornado. Winds were estimated at 125 mph. The most concentrated damage occurred in Dayton where several homes had significant roof damage. There were several hundred hardwood and softwood trees snapped and uprooted. The tornado touched down just west of County Road 39, southwest of the Half Chance community. The tornado tracked northeast right over Dayton. The tornado lifted northeast of Dayton east of State Highway 25. The tornado damage path was 10.9 miles long and was 600 yards wide at its widest point.

A Tornado Warning was in effect from 530 pm until 630 pm. 


Reflectivity Image when tornado was on the ground.

Storm Relative Velocity Image when tornado
was on the ground.

Roof Damage

Missiles hit this truck

Roof Damage

Home Damage