Heavy to severe thunderstorms may bring areas of excessive rainfall and flooding over parts of the southern Plains through Friday. A Slight Risk of excessive rainfall has been issued. Dangerously hot temperatures are forecast across parts of southern Arizona and far southeastern California Saturday through Monday. An Extreme Heat Watch has been issued. Read More >
Wisconsin Tornado Statistics (since 1950)
| Most Tornadoes in a Year | Least Tornadoes in a Year (since 1982) |
|
1. 2005: 62 tornadoes |
1. 2012: 4 tornadoes 2. 1995: 7 tornadoes 3. 1990: 9 tornadoes 4. 1991: 10 tornadoes 5. 1999: 11 tornadoes 6. 2001: 12 tornadoes 7. 2006: 13 tornadoes 8. 2003: 14 tornadoes 1997: 14 tornadoes 1986: 14 tornadoes |
| Most Tornadoes in One Day | ||
| Rank and Date | # | Notes |
|
1. Aug 18, 2005 |
27 24 22 19 18 17 15 13 13 12 |
Stoughton tornado Mothers Day outbreak QLCS outbreak - Preliminary Markensan F3 event Biggest April outbreak Pardeeville tornado Oakfield tornado |
| Most Tornadoes by Month | ||
| Month | Highest # of Tornadoes | 2nd Highest |
| January | 2 (2008) | 1 (1967) |
| February | 0 | 0 |
| March | 3 (1967) | 2 (1973, 1998) |
| April | 15 (2011) | 11 (1984) |
| May | 24 (1988) | 17 (1959) |
| June | 30 (2005) | 28 (1993) |
| July | 25 (1983) | 24 (2010) |
| August | 27 (2005) | 15 (1979) |
| September | 10 (2002, 1972) | 7 (1982, 1992) |
| October | 4 (1992) | 2 (numerous) |
| November | 2 (1960) | 1 (1971) |
| December | 5 (1970) | 0 |
| Deadliest Tornadoes* | |||
| Rank and Date | # Dead | # Injured | Area |
| 1. Jun 4, 1958 | 19 | 110 | Colfax |
| 2. Jun 8, 1984 | 9 | 200 | Barneveld |
| 3. Apr 3, 1956 | 7 | 50 | Berlin |
| 4. Sept 26, 1951 | 6 | 3 | Waupaca |
| 5. Jun 4, 1958 | 4 | 56 | Chippewa Falls |
| 6. May 10, 1953 | 4 | 27 | NW Wisconsin |
| 7. Jun 4, 1958 | 4 | 3 | Ludington |
| 8. Apr 4, 1981 | 3 | 53 | West Bend |
| 9. Apr 11, 1965 | 3 | 28 | Ixonia |
| 10. Jun 8, 1985 | 2 | 42 | Wintergreen Lake |
* The New Richmond tornado of Jun 12, 1899 is Wisconsin's deadliest tornado in state history, with 117 killed and 125 injured.
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