NOAA NWS Storm Prediction Center

posted Sep 23, 2012, 5:13 AM by Randy Zongker
After a busy start, tornado events in the U.S. in 2012 have dropped well below the expected normal. The preliminary total of 757 tornadoes is about 400 tornadoes below what might be expected in a typical year. This chart shows that in late 2011, the annual running total was over 400 tornadoes above normal. This depicts the dramatic variability that can occur in tornado numbers from one year to the next.