Tornado climatology
The United States averaged 1,274 tornadoes per year in the last decade. April 2011 saw the most tornadoes ever recorded for any month in the US National Weather Service's history, 875; the previous record was 542 in one month. It has more tornadoes yearly than any other country and reports more violent (F4 and F5) tornadoes than anywhere else.
Daulatpur–Saturia tornado
Bangladesh is one of the countries with the highest frequency of tornadoes, behind the United States and Canada. Bangladesh has received other deadly tornadoes, but this particular storm was the worst in the country's history.