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.
Tornadoes of 2010
There were 1,282 tornadoes confirmed in the United States in 2010, with 45 confirmed fatalities. Elsewhere in the world, 11 people were killed in tornadoes: six in Argentina, three in the Bahamas and one each in Bangladesh and Germany. The year was near average for tornadoes despite an extremely quiet early spring period, however such changed after a huge upswing starting in late April and a busy late spring and summer period. The autumn months were slightly above average.