Tornado Seasons

Although tornadoes can happen any time of the year, the most active season is the Spring Season.  May is typically the most active month for storm chasing.  In Oklahoma we average 20 tornadoes during the month of May.

Chase Periods and Average Tornadoes by Month
Chase Period 1 March April May June

Oklahoma 

4 11 20 8

Nation

128 181 171 188
Chase Period 2 July August September October

Oklahoma 

2 2 2 2

Nation

93 92 89 60
Chase Period 3 November December January February

Oklahoma 

1 <1 <1 <1

Nation

66 33 34 25