In late 2023, American meteorologist and tornado expert Thomas P. Grazulis created the Outbreak Intensity Score (OIS) as a way to rank tornado outbreaks. For the score, only significant tornadoes are counted: F2/EF2 tornadoes receive 2 points each, F3/EF3 tornadoes receive 5 points each, F4/EF4 tornadoes receive 10 points each, and F5/EF5 tornadoes receive 15 points each. The number of total points determine the rating for the outbreak, which is broken up into seven categories.
| Type of outbreak | Weak | Minor | Significant | Major | Devastating | Historic | Super |
|---|---|---|---|---|---|---|---|
| Number of points | 2–6 | 7–10 | 11–29 | 30–79 | 80–119 | 120–249 | 250+ |
List
Super outbreaks
There have been three tornado outbreaks which scored more than 250 points on the OIS, reaching the status of "Super Outbreak".
| Outbreak | OIS score | # of (E)F2s | # of (E)F3s | # of (E)F4s | # of (E)F5s | Total tornadoes | Deaths | Injuries | References |
|---|---|---|---|---|---|---|---|---|---|
| 1974 Super Outbreak | 578 | 34 | 35 | 23 | 7 | 148 | 319 | 5,454 | |
| 2011 Super Outbreak | 383 | 49 | 23 | 11 | 4 | 368 | 324 | 2,892 | |
| Tornado outbreak sequence of May 25 – June 1, 1917 | 296 | 28 | 17 | 14 | 1 | 66+ | 383+ | 746+ |
Historic outbreaks
There have been 44 tornado outbreaks which scored at least 120 points, but less than 249 on the OIS, reaching the status of "Historic Outbreak".
| Outbreak | OIS score | # of (E)F2s | # of (E)F3s | # of (E)F4s | # of (E)F5s | Total tornadoes | Deaths | Injuries | References |
|---|---|---|---|---|---|---|---|---|---|
| 1965 Palm Sunday tornado outbreak | 238 | 14 | 6 | 18 | 0 | 55 | 266 | 3,662 | |
| Tornado outbreak sequence of May 2003 | 232 | 36 | 20 | 6 | 0 | 363 | 42 | 652 | |
| Tornado outbreak sequence of May 14–31, 1962 | 209 | 47 | 15 | 4 | 0 | 188 | 3 | 168 | |
| Tornado outbreak sequence of May 1896 | 199 | 17 | 12 | 6 | 3 | 38+ | 501+ | 1,914+ | |
| Tornado outbreak sequence of May 6–27, 1995 | 188 | 39 | 14 | 4 | 0 | 279 | 13 | 500+ | |
| Tornado outbreak of November 21–23, 1992 | 187 | 26 | 15 | 6 | 0 | 95 | 26 | 641 | |
| Tornado outbreak of June 14–18, 1992 | 186 | 33 | 15 | 3 | 1 | 170 | 1 | 110 | |
| Tornado outbreak of April 2–3, 1956 | 185 | 25 | 8 | 8 | 1 | 55 | 39 | 790 | |
| 1932 Deep South tornado outbreak | 182 | 16 | 10 | 10 | 0 | 38 | 330 | 2,141 | |
| Tornado outbreak sequence of May 1982 | 174 | 42 | 16 | 1 | 0 | 329 | 14 | 18+ | |
| Tornado outbreak sequence of May 22–31, 1973 | 172 | 41 | 10 | 4 | 0 | 145 | 24 | 820 | |
| Tornado outbreak sequence of May 2019 | 172 | 31 | 18 | 2 | 0 | 402 | 8 | 288 | |
| Tornado outbreak of May 1927 | 169 | 17 | 8 | 8 | 1 | 34+ | 217+ | 1,156+ | |
| Tornado outbreak of March 21–22, 1952 | 169 | 7 | 11 | 10 | 0 | 30 | 204 | 1,155 | |
| Early May 1965 tornado outbreak | 169 | 22 | 6 | 8 | 1 | 72 | 17 | 770 | |
| 1985 United States–Canada tornado outbreak | 169 | 7 | 12 | 8 | 1 | 44 | 90 | 875 | |
| Tornado outbreak sequence of May 21–26, 2011 | 162 | 31 | 8 | 3 | 2 | 239 | 178 | 1,630 | |
| Tornado outbreak of April 20–22, 1912 | 159 | 12 | 9 | 9 | 0 | 32+ | 56+ | 410+ | |
| May 1960 tornado outbreak sequence | 157 | 26 | 10 | 4 | 1 | 71 | 33 | 302 | |
| Tornado outbreak of March 16–17, 1942 | 156 | 8 | 13 | 6 | 1 | 30+ | 149 | 1,312+ | |
| Tornado outbreak sequence of April 25 – May 3, 1954 | 154 | 37 | 10 | 3 | 0 | 100 | 4 | 167 | |
| Tornado outbreak sequence of March 18–27, 1948 | 153 | 19 | 11 | 6 | 0 | 36 | 80 | 896 | |
| 1920 Palm Sunday tornado outbreak | 150 | 15 | 8 | 8 | 0 | 37+ | 153+ | 1,215+ | |
| Tornado outbreak of March 13–16, 2025 | 147 | 31 | 11 | 3 | 0 | 117 | 23 | 65+ | |
| Tornado outbreak sequence of May 1983 | 146 | 33 | 16 | 0 | 0 | 157 | 6 | 2+ | |
| 1999 Oklahoma tornado outbreak | 145 | 20 | 10 | 4 | 1 | 152 | 50 | 895 | |
| Tornado outbreak of April 29 – May 1, 1909 | 140 | 30 | 8 | 4 | 0 | 43+ | 181+ | 770+ | |
| Tornado outbreak sequence of April 18–27, 1957 | 140 | 30 | 8 | 4 | 0 | 117 | 2 | 33 | |
| Tornado outbreak sequence of May 4–8, 1964 | 140 | 35 | 7 | 2 | 1 | 73 | 15 | 383 | |
| Enigma tornado outbreak | 135 | 25 | 9 | 4 | 0 | 51+ | 180+ | 1,056+ | |
| 2020 Easter tornado outbreak | 133 | 19 | 13 | 3 | 0 | 141 | 32 | 257 | |
| Tornado outbreak of April 27–29, 1912 | 130 | 10 | 6 | 8 | 0 | 26 | 47+ | 175+ | |
| Tornado outbreak of March 31 – April 1, 2023 | 129 | 32 | 11 | 1 | 0 | 147 | 26 | 218+ | |
| Tornado outbreak of April 14–16, 2011 | 129 | 32 | 13 | 0 | 0 | 178 | 38 | 588 | |
| June 1990 Lower Ohio Valley tornado outbreak | 129 | 17 | 5 | 7 | 0 | 66 | 9 | 253 | |
| Tornado outbreak of April 2–3, 1982 | 128 | 14 | 11 | 3 | 1 | 63 | 30 | 433 | |
| Tornado outbreak sequence of April 19–21, 1973 | 127 | 26 | 9 | 3 | 0 | 68 | 2 | 106 | |
| Flint–Worcester tornado outbreak sequence | 126 | 13 | 7 | 5 | 1 | 50 | 251 | 2,619 | |
| March 1990 Central United States tornado outbreak | 126 | 13 | 10 | 2 | 2 | 64 | 2 | 89 | |
| 1991 Great Plains tornado outbreak | 126 | 18 | 7 | 4 | 1 | 55 | 21 | 313 | |
| 1908 Dixie tornado outbreak | 124 | 22 | 3 | 5 | 1 | 31+ | 324+ | 1,720+ | |
| Tornado outbreak sequence of May 3–9, 1961 | 123 | 29 | 9 | 2 | 0 | 73 | 23 | 126 | |
| Tornado outbreak sequence of December 18–20, 1957 | 122 | 16 | 9 | 3 | 1 | 37 | 19 | 291 | |
| May 1957 Central Plains tornado outbreak sequence | 120 | 20 | 7 | 3 | 1 | 57 | 59 | 341 |
Devastating outbreaks
There have been several tornado outbreaks which scored at least 80 points, but less than 120 on the OIS, reaching the status of "Devastating Outbreak".
| Outbreak | OIS score | # of (E)F2s | # of (E)F3s | # of (E)F4s | # of (E)F5s | Total tornadoes | Deaths | Injuries | References |
|---|---|---|---|---|---|---|---|---|---|
| Tornado outbreak of June 5–6, 1916 | 115 | 20 | 13 | 1 | 0 | 35+ | 143+ | 756+ | |
| Tornado outbreak of March 27, 1890 | 114 | 12 | 6 | 6 | 0 | 24+ | 187+ | 846+ | |
| Tornado outbreak sequence of May 19–27, 2024 | 112 | 21 | 12 | 1 | 0 | 247 | 21 | 243 | |
| 1984 Carolinas tornado outbreak | 109 | 7 | 5 | 7 | 0 | 24 | 57 | 1,249 | |
| 2008 Super Tuesday tornado outbreak | 107 | 16 | 5 | 5 | 0 | 87 | 57 | 425 | |
| Tornado outbreak sequence of May 2004 | 106 | 23 | 8 | 2 | 0 | 389 | 7 | 123 | |
| Tornado outbreak of May 1968 | 105 | 10 | 7 | 2 | 2 | 46 | 72 | 1,203 | |
| Tornado outbreak of March 20–21, 1976 | 104 | 17 | 8 | 3 | 0 | 66 | 3 | 189 | |
| Tornado outbreak sequence of May 4–10, 1933 | 102 | 16 | 8 | 3 | 0 | 33+ | 128 | 644+ | |
| Tornado outbreak sequence of April 2–5, 1957 | 102 | 26 | 6 | 2 | 0 | 73 | 21 | 341 | |
| March 1875 Southeast tornado outbreak | 101 | 3 | 5 | 7 | 0 | 19+ | 96+ | 377+ | |
| April 1924 tornado outbreak | 101 | 13 | 11 | 2 | 0 | 28+ | 114 | 1,166+ | |
| Tornado outbreak of April 30 – May 2, 1967 | 101 | 21 | 4 | 4 | 0 | 38 | 13 | 90 | |
| Tornado outbreak of November 17, 2013 | 101 | 23 | 7 | 2 | 0 | 77 | 8 | 190+ | |
| Tornado outbreak of April 15–16, 1998 | 100 | 10 | 7 | 3 | 1 | 63 | 12 | 120 | |
| 1967 Oak Lawn tornado outbreak | 99 | 17 | 3 | 5 | 0 | 45 | 58 | 1,418 | |
| Tornado outbreak of May 22–27, 2008 | 98 | 14 | 9 | 1 | 1 | 173 | 13 | 215 | |
| Tornado outbreak of April 1880 | 97 | 16 | 3 | 5 | 0 | 25+ | 166+ | 516+ | |
| Tornado outbreak sequence of March 9–13, 2006 | 97 | 16 | 11 | 1 | 0 | 99 | 10 | 183 | |
| Tornado outbreak of April 27–30, 2014 | 97 | 16 | 9 | 2 | 0 | 82 | 35 | 447 | |
| Tornado outbreak and floods of April 2–7, 2025 | 96 | 33 | 6 | 0 | 0 | 145+ | 10 | 47+ | |
| Tornado outbreak sequence of May 8–12, 1959 | 95 | 20 | 7 | 2 | 0 | 60 | 7 | 34 | |
| Tornado outbreak of April 12, 1945 | 94 | 7 | 5 | 4 | 1 | 17 | 128 | 1,001 | |
| Tornado outbreak sequence of May 1971 | 94 | 22 | 8 | 1 | 0 | 76 | 6 | 242 | |
| Tornado outbreak sequence of June 21–26, 1969 | 93 | 14 | 7 | 3 | 0 | 63 | 7 | 65+ | |
| Tornado outbreak sequence of April 1996 | 93 | 19 | 11 | 0 | 0 | 118 | 6 | 200+ | |
| Tornado outbreak of March 2–3, 2012 | 93 | 14 | 9 | 2 | 0 | 70 | 41 | 300+ | |
| 1953 Waco tornado outbreak | 91 | 8 | 4 | 4 | 1 | 33 | 144 | 895 | |
| Tornado outbreak of June 7–8, 1984 | 91 | 23 | 4 | 1 | 1 | 46 | 13 | 322 | |
| Tornado outbreak sequence of May 7–11, 2008 | 91 | 23 | 5 | 2 | 0 | 120 | 25 | 419 | |
| 1979 Red River Valley tornado outbreak | 90 | 25 | 4 | 2 | 0 | 61 | 58 | 1,927 | |
| 2002 Veterans Day weekend tornado outbreak | 90 | 20 | 8 | 1 | 0 | 76 | 36 | 303 | |
| Tornado outbreak of June 16–18, 2014 | 89 | 12 | 3 | 5 | 0 | 76 | 2 | 28 | |
| Tornado outbreak of April 21–23, 1883 | 87 | 11 | 5 | 4 | 0 | 29+ | 122+ | 771+ | |
| Tornado outbreak sequence of June 9–14, 1967 | 87 | 26 | 3 | 2 | 0 | 103 | 5 | 15+ | |
| Tornado outbreak of April 25–28, 2024 | 87 | 16 | 7 | 2 | 0 | 162 | 6 | 156+ | |
| Tornado outbreak sequence of March 26–31, 1961 | 86 | 18 | 10 | 0 | 0 | 47 | 3 | 80 | |
| 1913 Easter tornado outbreak | 85 | 5 | 3 | 6 | 0 | 15+ | 192 | 853+ | |
| Tornado outbreak of March 13–14, 1913 | 84 | 12 | 6 | 3 | 0 | 23+ | 76+ | 301+ | |
| 1936 Tupelo–Gainesville tornado outbreak | 84 | 2 | 7 | 3 | 1 | 14+ | 454+ | 2,498+ | |
| Tornado outbreak of November 23–24, 2001 | 83 | 19 | 3 | 3 | 0 | 69 | 13 | 219 | |
| April 1920 tornado outbreak | 82 | 6 | 2 | 6 | 0 | 17+ | 243+ | 1,374+ | |
| Tornado outbreak of December 10–11, 2021 | 82 | 16 | 6 | 2 | 0 | 71 | 89 | 676 | |
| 1955 Great Plains tornado outbreak | 81 | 13 | 3 | 1 | 2 | 48 | 102 | 554 | |
| Tornado outbreak sequence of June 1966 | 81 | 18 | 2 | 2 | 1 | 57 | 18 | 543 | |
| Tornado outbreak sequence of June 10–16, 1970 | 81 | 18 | 7 | 1 | 0 | 82 | 3 | 73 | |
| Tornado outbreak of June 8, 1974 | 81 | 8 | 9 | 2 | 0 | 36 | 22 | 477 | |
| Tornado outbreak of January 21–23, 1999 | 81 | 13 | 9 | 1 | 0 | 128 | 9 | 162 | |
| 1886 St. Cloud–Sauk Rapids tornado outbreak | 80 | 10 | 4 | 4 | 0 | 18+ | 87+ | 324+ | |
| 1967 St. Louis tornado outbreak | 80 | 15 | 6 | 2 | 0 | 30 | 7 | 268 | |
| Tornado outbreak sequence of April 17–19, 1970 | 80 | 10 | 2 | 5 | 0 | 33 | 26 | 68 |
Major outbreaks
There have been several tornado outbreaks which scored at least 30 points, but 79 or less on the OIS, reaching the status of "Major Outbreak".
| Outbreak | OIS score | # of (E)F2s | # of (E)F3s | # of (E)F4s | # of (E)F5s | Total tornadoes | Deaths | Injuries | References |
|---|---|---|---|---|---|---|---|---|---|
| Tornado outbreak sequence of April 28 – May 2, 1953 | 79 | 7 | 3 | 5 | 0 | 24 | 36 | 361 | |
| Tornado outbreak of April 9–11, 2009 | 79 | 12 | 9 | 1 | 0 | 85 | 5 | 112 | |
| June 2010 Northern Plains tornado outbreak | 78 | 9 | 4 | 4 | 0 | 93 | 3 | 43 | |
| Tornado outbreak of April 28–30, 1963 | 77 | 16 | 7 | 1 | 0 | 37 | 13 | 72 | |
| Tornado outbreak of April 18–21, 1974 | 76 | 18 | 6 | 1 | 0 | 36 | 2 | 1+ | |
| Tornado outbreak of May 18–21, 2025 | 76 | 13 | 10 | 0 | 0 | 123 | 0 | 10+ | |
| Tornado outbreak of June 1881 | 74 | 2 | 4 | 5 | 0 | 11+ | 20+ | 141+ | |
| Tornado outbreak of March 28–31, 1976 | 73 | 14 | 5 | 2 | 0 | 35 | 10 | 1+ | |
| Tornado outbreak of April 30 – May 1, 1949 | 71 | 8 | 9 | 1 | 0 | 24+ | 10 | 103 | |
| March 1997 tornado outbreak | 71 | 8 | 5 | 3 | 0 | 39 | 27 | 464 | |
| Tornado outbreak of May 4–6, 2007 | 70 | 15 | 5 | 0 | 1 | 132 | 14 | 89 | |
| Tornado outbreak of May 23–24, 1946 | 69 | 7 | 5 | 3 | 0 | 17+ | 4 | 42 | |
| 1980 Grand Island tornado outbreak | 68 | 9 | 4 | 3 | 0 | 29 | 6 | 413 | |
| Tornado outbreak sequence of May 22–26, 2016 | 68 | 9 | 8 | 1 | 0 | 98 | 0 | 11+ | |
| Tornado outbreak of May 2, 1942 | 67 | 1 | 1 | 6 | 0 | 8+ | 31 | 172+ | |
| Tornado outbreak of May 20–21, 1949 | 67 | 6 | 3 | 4 | 0 | 46+ | 56 | 0+ | |
| Tornado outbreak of May 6–8, 1973 | 66 | 23 | 1 | 0 | 1 | 47 | 2 | 41 | |
| Late-May 1998 tornado outbreak and derecho | 66 | 13 | 6 | 1 | 0 | 60 | 7 | 233+ | |
| Tornado outbreak of April 8–9, 1999 | 66 | 8 | 4 | 3 | 0 | 54 | 6 | 100 | |
| Tornado outbreak of May 10–13, 2010 | 66 | 13 | 4 | 2 | 0 | 91 | 3 | 127 | |
| December 2021 Midwest derecho and tornado outbreak | 66 | 33 | 0 | 0 | 0 | 120 | 5 | 3 | |
| Tornado outbreak of April 9, 1919 | 65 | 5 | 3 | 4 | 0 | 12 | 92+ | 412 | |
| Tornado outbreak sequence of November 13–17, 1958 | 65 | 20 | 5 | 0 | 0 | 43 | 0 | 37 | |
| Tornado outbreak of June 7–9, 1993 | 65 | 10 | 5 | 2 | 0 | 107 | 1 | 1+ | |
| Tornado outbreak of February 21–22, 1971 | 64 | 7 | 3 | 2 | 1 | 19+ | 123 | 1,592 | |
| Tornado outbreak of April 27–28, 2002 | 64 | 12 | 6 | 1 | 0 | 48 | 6 | 256 | |
| Tornado outbreak of February 11–13, 1950 | 63 | 14 | 5 | 1 | 0 | 24 | 41+ | 228 | |
| 1975 Omaha tornado outbreak | 63 | 14 | 3 | 2 | 0 | 36 | 3 | 137+ | |
| 1994 Palm Sunday tornado outbreak | 63 | 4 | 7 | 2 | 0 | 29 | 40 | 491 | |
| Tornado outbreak of February 28 – March 2, 2007 | 63 | 9 | 3 | 3 | 0 | 57 | 20 | 98 | |
| Tornado outbreak sequence of June 3–11, 2008 | 63 | 14 | 5 | 1 | 0 | 192 | 7 | 84 | |
| Tornado outbreak of March 12–15, 1953 | 62 | 11 | 6 | 1 | 0 | 23 | 21 | 72 | |
| Tornado outbreak of April 23–27, 1970 | 62 | 11 | 6 | 1 | 0 | 34 | 3 | 26+ | |
| Tornado outbreak of December 23–25, 1982 | 62 | 16 | 4 | 1 | 0 | 44 | 1 | 11+ | |
| Tornado outbreak sequence of May 30 – June 3, 1954 | 61 | 18 | 3 | 1 | 0 | 39 | 9 | 65 | |
| Tornado outbreak of April 8, 1957 | 61 | 8 | 5 | 2 | 0 | 18 | 7 | 203 | |
| Tornado outbreak of December 17–21, 1967 | 61 | 13 | 5 | 1 | 0 | 30 | 6 | 110 | |
| Tornado outbreak of April 21–24, 1968 | 61 | 8 | 2 | 2 | 1 | 26 | 14 | 525 | |
| Tornado outbreak sequence of December 1–6, 1953 | 60 | 10 | 3 | 1 | 1 | 19 | 49 | 404 | |
| Tornado outbreak of April 2–4, 1968 | 60 | 15 | 2 | 2 | 0 | 31 | 12 | 0+ | |
| Tornado outbreak of April 19–22, 1972 | 60 | 10 | 6 | 1 | 0 | 28 | 8 | 42 | |
| Tri-State tornado outbreak | 59 | 2 | 4 | 2 | 1 | 12+ | 751 | 2,298 | |
| Tornado outbreak sequence of April 23–30, 1961 | 59 | 12 | 5 | 1 | 0 | 30 | 3 | 38 | |
| Tornado outbreak sequence of June 17–23, 1964 | 59 | 12 | 5 | 1 | 0 | 52 | 0 | 37 | |
| Tornado outbreak of March 25–26, 1949 | 58 | 9 | 4 | 2 | 0 | 15+ | 25+ | 180+ | |
| Tornado outbreak sequence of April 26–30, 1971 | 58 | 9 | 4 | 2 | 0 | 30 | 10 | 187 | |
| Tornado outbreak of April 22–25, 2010 | 58 | 9 | 4 | 2 | 0 | 88 | 10 | 184 | |
| Tornado outbreak sequence of April 5–8, 1954 | 57 | 11 | 5 | 1 | 0 | 25 | 1 | 22 | |
| Hurricane Carla tornado outbreak | 57 | 6 | 7 | 1 | 0 | 21 | 14 | 337 | |
| Tornado outbreak of March 13–17, 1982 | 57 | 11 | 7 | 0 | 0 | 23 | 4 | 1+ | |
| Tornado outbreak sequence of May 15–16, 2025 | 57 | 11 | 3 | 2 | 0 | 55 | 27 | 38-45 | |
| Tornado outbreak of February 5–6, 1942 | 56 | 18 | 4 | 0 | 0 | 22+ | 15 | 114 | |
| Tornado outbreak of March 26, 1976 | 56 | 3 | 3 | 2 | 1 | 17 | 4 | 89 | |
| Tornado outbreak sequence of April 12–18, 1960 | 55 | 10 | 7 | 0 | 0 | 37 | 4 | 60 | |
| Tornado outbreak of April 28–30, 1947 | 54 | 7 | 4 | 2 | 0 | 13+ | 24+ | 0+ | |
| Tornado outbreak sequence of July 1–10, 1955 | 54 | 7 | 2 | 3 | 0 | 28 | 4 | 48 | |
| Tornado outbreak sequence of January 7–11, 2008 | 54 | 7 | 8 | 0 | 0 | 73 | 4 | 62 | |
| Tornado outbreak of May 26–31, 2013 | 54 | 12 | 6 | 0 | 0 | 134 | 9 | 172 | |
| Tornado outbreak of November 7–8, 1957 | 53 | 9 | 5 | 1 | 0 | 28 | 12 | 213 | |
| Tornado outbreak sequence of March 4–8, 1961 | 53 | 14 | 5 | 0 | 0 | 44 | 2 | 152 | |
| Tornado outbreak sequence of April 29 – May 2, 1972 | 53 | 4 | 7 | 1 | 0 | 21 | 0 | 12 | |
| Tornado outbreak of November 20–21, 1900 | 52 | 6 | 4 | 2 | 0 | 14+ | 97+ | 388+ | |
| Tornado outbreak of November 16–19, 1957 | 52 | 11 | 2 | 2 | 0 | 32 | 10 | 84 | |
| 1967 Hurricane Beulah tornado outbreak | 52 | 6 | 8 | 0 | 0 | 120 | 5 | 41 | |
| 2009 South American tornado outbreak | 52 | 6 | 4 | 2 | 0 | 28 | 15 | 1+ | |
| Tornado outbreak of January 4–6, 1946 | 51 | 3 | 3 | 3 | 0 | 10+ | 47 | 412+ | |
| Tornado outbreak of October 14–15, 1966 | 51 | 13 | 2 | 0 | 1 | 23 | 6 | 225 | |
| Tornado outbreak of May 6–10, 2024 | 51 | 13 | 3 | 1 | 0 | 162 | 3 | 87-91+ | |
| Tornado outbreak of January 29–30, 1947 | 50 | 10 | 4 | 1 | 0 | 15+ | 13+ | 24+ | |
| Tornado outbreak sequence of May 12–17, 1957 | 50 | 10 | 4 | 1 | 0 | 50 | 23 | 105 | |
| Tornado outbreak of May 18–21, 2013 | 50 | 5 | 1 | 2 | 1 | 78 | 26 | 229 | |
| Tornado outbreak sequence of March 24–28, 2021 | 50 | 10 | 4 | 1 | 0 | 43 | 7 | 37+ | |
| Tornado outbreak sequence of September 26–29, 1959 | 49 | 12 | 1 | 2 | 0 | 36 | 2 | 47 | |
| 2012 Leap Day tornado outbreak | 49 | 17 | 1 | 1 | 0 | 42 | 15 | 193 | |
| Tornado outbreak sequence of May 17–20, 1960 | 48 | 9 | 2 | 2 | 0 | 63 | 1 | 108 | |
| 2003 South Dakota tornado outbreak | 48 | 9 | 2 | 2 | 0 | 125 | 2 | 19 | |
| Tornado outbreak of January 3, 1949 | 47 | 6 | 5 | 1 | 0 | 14+ | 60+ | 504 | |
| Tornado outbreak of March 24–25, 1954 | 47 | 16 | 1 | 1 | 0 | 28 | 2 | 11 | |
| 1944 Appalachians tornado outbreak | 47 | 1 | 3 | 3 | 0 | 7+ | 154+ | 1,044 | |
| Tornado outbreak of March 10–12, 1963 | 47 | 11 | 1 | 2 | 0 | 18 | 6 | 38 | |
| Tornado outbreak of April 12–14, 1964 | 47 | 6 | 3 | 2 | 0 | 23 | 7 | 75 | |
| 1967 European tornado outbreak | 47 | 1 | 4 | 1 | 1 | 8+ | 17 | 80+ | |
| Tornado outbreak of December 1–3, 1982 | 47 | 6 | 7 | 0 | 0 | 38 | 2 | 0+ | |
| 2008 Atlanta tornado outbreak | 47 | 16 | 3 | 0 | 0 | 46 | 3 | 53 | |
| Tornado outbreak of June 5–6, 2010 | 47 | 11 | 3 | 1 | 0 | 53 | 8 | 68 | |
| Tornado outbreak sequence of May 15–20, 1946 | 46 | 3 | 2 | 3 | 0 | 8+ | 8+ | 53+ | |
| Tornado outbreak of June 3–4, 1958 | 46 | 3 | 1 | 2 | 1 | 13 | 28 | 175 | |
| 1997 Central Texas tornado outbreak | 46 | 3 | 3 | 1 | 1 | 20 | 28 | 30 | |
| Tornado outbreak of April 2, 2006 | 46 | 8 | 6 | 0 | 0 | 66 | 27 | 348 | |
| Tornado outbreak of April 9–11, 2011 | 46 | 8 | 4 | 1 | 0 | 49 | 0 | 21 | |
| Tornado outbreak sequence of May 5–10, 2015 | 46 | 8 | 6 | 0 | 0 | 127 | 5 | 67 | |
| Tornado outbreak of March 16–18, 1965 | 45 | 5 | 5 | 1 | 0 | 24 | 2 | 129 | |
| Tornado outbreak of June 13, 1976 | 45 | 5 | 2 | 1 | 1 | 16 | 2 | 1+ | |
| Tornado outbreak of April 1977 | 45 | 10 | 2 | 0 | 1 | 22 | 24 | 158 | |
| May 1989 tornado outbreak | 45 | 5 | 1 | 3 | 0 | 16 | 7 | 168 | |
| Tornado outbreak of November 22–24, 2004 | 45 | 15 | 3 | 0 | 0 | 104 | 4 | 39 | |
| Tornado outbreak of October 17–19, 2007 | 45 | 15 | 3 | 0 | 0 | 63 | 5 | 28 | |
| Tornado outbreak of March 28–31, 2007 | 45 | 10 | 5 | 0 | 0 | 81 | 5 | 26 | |
| Tornado outbreak sequence of April 19–24, 2011 | 45 | 15 | 1 | 1 | 0 | 134 | 0 | 14 | |
| Tornado outbreak of April 4–7, 2022 | 45 | 10 | 3 | 1 | 0 | 89 | 1 | 17+ | |
| Tornado outbreak of December 12–15, 2022 | 45 | 20 | 1 | 0 | 0 | 77 | 3 | 64 | |
| Tornado outbreak sequence of April 21–24, 1955 | 44 | 12 | 2 | 1 | 0 | 27 | 6 | 29 | |
| Tornado outbreak of December 14–15, 1971 | 44 | 17 | 2 | 0 | 0 | 40 | 2 | 119 | |
| Tornado outbreak of April 25–27, 1982 | 44 | 7 | 6 | 0 | 0 | 13+ | 0 | 0+ | |
| Tornado outbreak of November 4–5, 2022 | 44 | 7 | 2 | 2 | 0 | 31 | 2 | 34+ | |
| 1929 Rye Cove tornado outbreak | 43 | 9 | 5 | 0 | 0 | 17 | 42+ | 323+ | |
| Great Storm of 1975 | 43 | 14 | 1 | 1 | 0 | 45 | 12 | 377 | |
| Tornado outbreak of April 23, 2000 | 43 | 14 | 3 | 0 | 0 | 33 | 0 | 12 | |
| Tornado outbreak of June 18–22, 2011 | 43 | 9 | 5 | 0 | 0 | 78 | 0 | 4 | |
| Tornado outbreak of December 16–17, 2019 | 43 | 9 | 5 | 0 | 0 | 41 | 3 | 14+ | |
| Tornado outbreak sequence of April 2–8, 1964 | 42 | 11 | 1 | 0 | 1 | 33 | 7 | 119 | |
| Tornado outbreak of November 25–27, 1965 | 42 | 6 | 6 | 0 | 0 | 18 | 1 | 26 | |
| Tornado outbreak of February 22–24, 1975 | 42 | 11 | 2 | 1 | 0 | 23 | 3 | 1+ | |
| Tornado outbreak of May 22–23, 1981 | 42 | 11 | 2 | 1 | 0 | 43 | 0 | 12 | |
| Tornado outbreak of May 7–10, 2016 | 42 | 6 | 4 | 1 | 0 | 57 | 2 | 19 | |
| 1947 Glazier–Higgins–Woodward tornado outbreak | 41 | 8 | 0 | 1 | 1 | 12+ | 185+ | 990+ | |
| Tornado outbreak of May 24–25, 1957 | 41 | 8 | 3 | 1 | 0 | 45 | 4 | 10 | |
| Tornado outbreak of April 28–30, 1960 | 41 | 8 | 5 | 0 | 0 | 19 | 3 | 79 | |
| Tornado outbreak of April 19, 1976 | 41 | 8 | 2 | 0 | 1 | 16 | 0 | 11 | |
| Hurricane Ivan tornado outbreak | 41 | 18 | 1 | 0 | 0 | 120 | 7 | 24+ | |
| Tornado outbreak of April 13–16, 2012 | 41 | 3 | 5 | 1 | 0 | 113 | 6 | 101 | |
| Tornado outbreak of February 28 – March 1, 2017 | 41 | 8 | 3 | 1 | 0 | 71 | 4 | 38 | |
| Tornado outbreak of March 21–23, 2022 | 41 | 13 | 3 | 0 | 0 | 85 | 3 | 68 | |
| 1936 Cordele–Greensboro tornado outbreak | 40 | 5 | 0 | 3 | 0 | 13+ | 49+ | 149+ | |
| Tornado outbreak of April 18, 1969 | 40 | 5 | 4 | 1 | 0 | 15 | 2 | 0+ | |
| Tornado outbreak of April 25–27, 1994 | 40 | 10 | 0 | 2 | 0 | 101 | 6 | 1+ | |
| Tornado outbreak of April 13–15, 2019 | 40 | 15 | 2 | 0 | 0 | 75 | 3 | 65 | |
| Tornado outbreak of March 12–13, 1961 | 39 | 12 | 3 | 0 | 0 | 25 | 2 | 84 | |
| Tornado outbreak of September 24–25, 1973 | 39 | 2 | 5 | 1 | 0 | 8 | 3 | 66 | |
| Tornado outbreak of April 6–9, 1998 | 39 | 7 | 2 | 0 | 1 | 62 | 41 | 250+ | |
| Tornado outbreak of November 15, 2005 | 39 | 7 | 3 | 1 | 0 | 49 | 1 | 108 | |
| Tornado outbreak of November 27–28, 2005 | 39 | 12 | 3 | 0 | 0 | 73 | 2 | 15 | |
| Tornado outbreak of April 30 – May 2, 2010 | 39 | 12 | 3 | 0 | 0 | 60 | 5 | 31 | |
| Tornado outbreak of June 4–5, 1955 | 38 | 4 | 2 | 2 | 0 | 46 | 0 | 0 | |
| Tornado outbreak sequence of May 12–14, 1956 | 38 | 9 | 0 | 2 | 0 | 19 | 4 | 162 | |
| Tornado outbreak of March 31 – April 2, 1959 | 38 | 4 | 4 | 1 | 0 | 17 | 7 | 83 | |
| Tornado outbreak of July 1–3, 1997 | 38 | 9 | 4 | 0 | 0 | 52 | 2 | 100 | |
| Tornado outbreak of March 6–8, 1956 | 37 | 11 | 1 | 1 | 0 | 17 | 1 | 42 | |
| Tornado outbreak of February 13, 1952 | 37 | 6 | 3 | 1 | 0 | 15 | 5 | 102 | |
| Tornado outbreak sequence of April 1–6, 1958 | 37 | 6 | 5 | 0 | 0 | 32 | 3 | 40 | |
| Tornado outbreak of May 10, 1985 | 37 | 1 | 3 | 2 | 0 | 10 | 0+ | 0+ | |
| Tornado outbreak of May 30 – June 1, 1999 | 37 | 6 | 5 | 0 | 0 | 59 | 3 | 1+ | |
| Tornado outbreak of April 10–11, 2001 | 37 | 16 | 1 | 0 | 0 | 79 | 4 | 18 | |
| Tornado outbreak of January 21–23, 2017 | 37 | 11 | 3 | 0 | 0 | 81 | 20 | 204 | |
| Tornado outbreak of March 24–27, 2023 | 37 | 6 | 3 | 1 | 0 | 35 | 23 | 236 | |
| Tornado outbreak of March 20–21, 1913 | 36 | 13 | 0 | 1 | 0 | 16+ | 53 | 156+ | |
| 1944 South Dakota–Minnesota tornado outbreak | 36 | 3 | 1 | 1 | 1 | 6+ | 13+ | 560+ | |
| Tornado outbreak of February 12, 1945 | 36 | 3 | 4 | 1 | 0 | 8 | 45 | 427 | |
| Tornado outbreak of October 29–30, 1956 | 36 | 3 | 4 | 1 | 0 | 16 | 0 | 7 | |
| Tornado outbreak of August 6, 1969 | 36 | 8 | 2 | 1 | 0 | 14 | 15+ | 109 | |
| March 1917 tornado outbreak | 35 | 5 | 3 | 1 | 0 | 9+ | 47+ | 300+ | |
| Tornado outbreak of November 15–16, 1955 | 35 | 5 | 5 | 0 | 0 | 18 | 1 | 35 | |
| Tornado outbreak of April 1–2, 1974 | 35 | 10 | 3 | 0 | 0 | 23 | 4 | 72 | |
| 1985 Hurricane Danny tornado outbreak | 35 | 10 | 3 | 0 | 0 | 46 | 1 | 7+ | |
| Tornado outbreak of May 1–3, 2008 | 35 | 10 | 3 | 0 | 0 | 60 | 6 | 45 | |
| Tornado outbreak of March 9–11, 1973 | 34 | 7 | 2 | 1 | 0 | 16 | 7 | 132 | |
| Tornado outbreak of March 10–12, 1986 | 34 | 12 | 2 | 0 | 0 | 41 | 6 | 122 | |
| Tornado outbreak of June 2, 1998 | 34 | 7 | 2 | 1 | 0 | 33 | 22 | 77 | |
| 2008 Poland tornado outbreak | 34 | 2 | 4 | 1 | 0 | 12 | 2 | 55+ | |
| Tornado outbreak sequence of June 14–19, 2023 | 34 | 12 | 2 | 0 | 0 | 93 | 4 | 120 | |
| Tornado outbreak of May 17, 1949 | 33 | 4 | 3 | 1 | 0 | 8+ | 1+ | 0+ | |
| Tornado outbreak sequence of January 21–22, 1957 | 33 | 9 | 1 | 1 | 0 | 16 | 13 | 31 | |
| Tornado outbreak sequence of August 24–31, 1964 | 33 | 9 | 1 | 1 | 0 | 26 | 2 | 12 | |
| Tornado outbreak of February 11, 1965 | 33 | 9 | 3 | 0 | 0 | 15 | 0 | 28 | |
| Tornado outbreak of December 16, 2000 | 33 | 9 | 1 | 1 | 0 | 24 | 12 | 186 | |
| 2010 New Year's Eve tornado outbreak | 33 | 4 | 5 | 0 | 0 | 37 | 9 | 32 | |
| Tornado outbreak of March 29–31, 2022 | 33 | 9 | 3 | 0 | 0 | 90 | 2 | 17 | |
| Great Blue Norther of November 11, 1911 | 32 | 6 | 2 | 1 | 0 | 13+ | 16 | 101+ | |
| Tornado outbreak of May 11, 1947 | 32 | 1 | 4 | 1 | 0 | 6 | 1 | 22 | |
| Tornado outbreak sequence of May 27 – June 2, 1958 | 32 | 11 | 2 | 0 | 0 | 23 | 0 | 3 | |
| Tornado outbreak of April 14–15, 1965 | 32 | 6 | 4 | 0 | 0 | 16 | 1 | 58 | |
| Tornado outbreak sequence of September 20–23, 1965 | 32 | 6 | 4 | 0 | 0 | 26 | 0 | 4 | |
| Tornado outbreak of April 12–13, 1967 | 32 | 16 | 0 | 0 | 0 | 30 | 0 | 9 | |
| Tornado outbreak of January 12, 2023 | 32 | 11 | 2 | 0 | 0 | 44 | 8 | 53 | |
| Tornado outbreak and derecho of June 19–22, 2025 | 32 | 6 | 1 | 0 | 1 | 41 | 7 | 2+ | |
| 1881 Minnesota tornado outbreak | 31 | 3 | 1 | 2 | 0 | 6+ | 24 | 123+ | |
| Tornado outbreak of September 29, 1927 | 31 | 8 | 3 | 0 | 0 | 15 | 82+ | 620+ | |
| St. Louis tornado outbreak of February 1959 | 31 | 3 | 3 | 1 | 0 | 17 | 21 | 358 | |
| Tornado outbreak of June 22–24, 1960 | 31 | 8 | 3 | 0 | 0 | 18 | 0 | 10 | |
| Tornado outbreak of March 4, 1964 | 31 | 3 | 3 | 1 | 0 | 8 | 4 | 44 | |
| 1984 Soviet Union tornado outbreak | 31 | 3 | 1 | 2 | 0 | 11 | 403 | 804 | |
| November 1989 tornado outbreak | 31 | 8 | 1 | 1 | 0 | 40 | 30 | 523 | |
| Tornado outbreak of September 21–23, 2006 | 31 | 8 | 1 | 1 | 0 | 48 | 0 | 14+ | |
| October 2013 North American storm complex | 31 | 3 | 1 | 2 | 0 | 22 | 3 | 17+ | |
| Tornado outbreak and floods of April 28 – May 1, 2017 | 31 | 8 | 1 | 1 | 0 | 75 | 5 | 70 | |
| Tornado outbreak of February 24–25, 1956 | 30 | 10 | 0 | 1 | 0 | 23 | 6 | 47 | |
| Tornado outbreak of February 26–27, 1958 | 30 | 5 | 4 | 0 | 0 | 16 | 13 | 92 | |
| Tornado outbreak of March 26–27, 1950 | 30 | 10 | 2 | 0 | 0 | 16 | 1 | 52 | |
| Tornado outbreak sequence of June 20–23, 1957 | 30 | 5 | 1 | 0 | 1 | 23 | 11 | 105 | |
| Tornado outbreak of May 4–6, 1959 | 30 | 15 | 0 | 0 | 0 | 50 | 0 | 2 | |
| Tornado outbreak of December 10–11, 1967 | 30 | 10 | 2 | 0 | 0 | 22 | 2 | 103 | |
| Tornado outbreak of March 12, 1971 | 30 | 0 | 4 | 1 | 0 | 10 | 1 | 5 | |
| 1978 Bossier City tornado outbreak | 30 | 5 | 2 | 1 | 0 | 11 | 5 | 277 | |
| May 2009 Southern Midwest derecho | 30 | 10 | 2 | 0 | 0 | 39 | 4 | 5+ | |
| Late-May 2010 tornado outbreak | 30 | 10 | 0 | 1 | 0 | 80 | 0 | 0 | |
| Tornado outbreak of December 23–25, 2015 | 30 | 5 | 2 | 1 | 0 | 38 | 13 | 77 | |
| Tornado outbreak of February 23–24, 2016 | 30 | 5 | 4 | 0 | 0 | 61 | 7 | 136 | |
| August 2017 Chinese tornado family | 30 | 0 | 0 | 3 | 0 | 3 | 5 | 58+ | |
| Tornado outbreak sequence of June 20–26, 2023 | 30 | 10 | 2 | 0 | 0 | 114 | 5 | 126 |
See also
- Tornado intensity and damage
- List of tornadoes and tornado outbreaks
- List of F5 and EF5 tornadoes
- List of F4 and EF4 tornadoes
- List of F4 and EF4 tornadoes (2010–2019)
- List of F4 and EF4 tornadoes (2020–present)
- List of tornadoes striking downtown areas
- Tornado myths
wikipedia, wiki, encyclopedia, book, library, article, read, free download, Information about List of tornado outbreaks by Outbreak Intensity Score, What is List of tornado outbreaks by Outbreak Intensity Score? What does List of tornado outbreaks by Outbreak Intensity Score mean?