This is a list of all tornadoes that were confirmed by local offices of the National Weather Service in the United States in September 2011.
United States yearly total
September
September 1 event
September 3 event
This events were related to Tropical Storm Lee.
September 4 event
The events in AL, MS, and FL were related to Tropical Storm Lee.
September 5 event
The events were related to Tropical Storm Lee.
September 6 event
The events were related to Tropical Storm Lee.
September 7 event
The events were related to Tropical Storm Lee.