The table below shows the number of tornadoes (twisters) which were formed in Japan. Approximately 25 tornadoes are formed in a year.
Japan Meteorological Agency changed the standard of the tornado statistics in 2007. So we cannot compare the data after 2007 and the data before 2006.
| Year | Number |
| 2007 | 12 |
| 2008 | 29 |
| 2009 | 23 |
| 2010 | 37 |
| 2011 | 15 |
| 2012 | 28 |
| 2013 | 33 |
Source is Japan Meteorological Agency.
www.data.jma.go.jp/obd/stats/data/bosai/tornado/stats/annually.html
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