(KTVI)-April 22, 2012 marks the one year anniversary of the 2011 “Good Friday” tornado. A strong supercell thunderstorm produced a tornado that left a 21 mile long path of destruction across northern St. Louis County in Missouri and across the river into Madison County in Illinois. The EF-4 tornado damaged homes and businesses in Maryland Heights, Bridgeton, St. Ann, Edmundson, Lambert Airport, Berkeley, Ferguson, and Pontoon Beach/Granite City.
Remarkably, no one was killed. Forecasters were able to give about 34 minutes of warning time on the storms.
In all, five tornadoes were confirmed from this event. The first touchdown was near New Melle, MO and was rated EF1. A second long-track EF2 tornado touched down in Madison, Clinton, and Bond Counties in Illinois. A southern supercell-storm produced two tornadoes: an EF2 in Monroe County and an EF1 in St. Clair County both in Illinois.
More info: Read the NWS St. Louis office's report on the April 22, 2011 tornadoes