US Tornado Count by Year and Month
| Year | Jan | Feb | Mar | Apr | May | June | Jul | Aug | Sep | Oct | Nov | Dec | Annual Total |
| 1950 | 7 | 20 | 21 | 15 | 61 | 28 | 23 | 13 | 3 | 2 | 4 | 4 | 201 |
| 1951 | 2 | 10 | 6 | 26 | 57 | 76 | 23 | 27 | 9 | 2 | 12 | 10 | 260 |
| 1952 | 12 | 27 | 43 | 37 | 34 | 34 | 27 | 16 | 1 | 0 | 6 | 3 | 240 |
| 1953 | 14 | 16 | 40 | 47 | 94 | 111 | 32 | 24 | 5 | 6 | 12 | 21 | 422 |
| 1954 | 2 | 17 | 62 | 113 | 101 | 107 | 45 | 49 | 21 | 14 | 2 | 17 | 550 |
| 1955 | 3 | 4 | 43 | 99 | 148 | 153 | 49 | 33 | 15 | 23 | 20 | 3 | 593 |
| 1956 | 2 | 47 | 31 | 85 | 79 | 65 | 92 | 42 | 16 | 29 | 7 | 9 | 504 |
| 1957 | 17 | 5 | 38 | 216 | 228 | 147 | 55 | 20 | 17 | 18 | 59 | 38 | 858 |
| 1958 | 11 | 20 | 15 | 76 | 68 | 128 | 121 | 46 | 24 | 9 | 45 | 1 | 564 |
| 1959 | 16 | 20 | 43 | 30 | 226 | 73 | 63 | 38 | 58 | 24 | 11 | 2 | 604 |
| 1960 | 9 | 28 | 28 | 70 | 201 | 125 | 42 | 48 | 21 | 18 | 25 | 1 | 616 |
| 1961 | 1 | 31 | 124 | 74 | 137 | 107 | 77 | 27 | 53 | 14 | 36 | 16 | 697 |
| 1962 | 12 | 25 | 37 | 41 | 200 | 171 | 78 | 51 | 24 | 11 | 5 | 2 | 657 |
| 1963 | 15 | 6 | 48 | 84 | 71 | 90 | 62 | 26 | 33 | 13 | 15 | 0 | 463 |
| 1964 | 14 | 2 | 36 | 157 | 134 | 137 | 63 | 79 | 25 | 22 | 17 | 18 | 704 |
| 1965 | 21 | 32 | 34 | 123 | 273 | 147 | 85 | 61 | 64 | 16 | 34 | 7 | 897 |
| 1966 | 1 | 28 | 12 | 80 | 98 | 126 | 100 | 58 | 22 | 29 | 20 | 11 | 585 |
| 1967 | 39 | 8 | 42 | 149 | 116 | 210 | 90 | 28 | 139 | 36 | 8 | 61 | 926 |
| 1968 | 5 | 7 | 28 | 102 | 145 | 136 | 56 | 66 | 25 | 14 | 44 | 32 | 660 |
| 1969 | 3 | 5 | 8 | 68 | 145 | 137 | 98 | 70 | 20 | 26 | 5 | 23 | 608 |
| 1970 | 9 | 16 | 25 | 117 | 88 | 134 | 81 | 55 | 54 | 50 | 10 | 14 | 653 |
| 1971 | 19 | 83 | 40 | 75 | 166 | 199 | 100 | 50 | 47 | 38 | 16 | 56 | 889 |
| 1972 | 33 | 7 | 69 | 96 | 140 | 114 | 115 | 59 | 49 | 34 | 17 | 8 | 741 |
| 1973 | 33 | 10 | 80 | 150 | 250 | 224 | 80 | 51 | 69 | 25 | 81 | 49 | 1102 |
| 1974 | 24 | 23 | 36 | 267 | 144 | 194 | 59 | 107 | 25 | 45 | 13 | 8 | 945 |
| 1975 | 52 | 45 | 84 | 108 | 188 | 196 | 79 | 60 | 34 | 12 | 39 | 22 | 919 |
| 1976 | 12 | 36 | 180 | 113 | 155 | 169 | 84 | 38 | 35 | 11 | 0 | 1 | 834 |
| 1977 | 5 | 17 | 64 | 88 | 228 | 132 | 99 | 82 | 65 | 25 | 24 | 23 | 852 |
| 1978 | 23 | 7 | 17 | 107 | 213 | 148 | 143 | 65 | 20 | 7 | 9 | 30 | 789 |
| 1979 | 16 | 4 | 53 | 123 | 112 | 150 | 132 | 126 | 69 | 47 | 21 | 2 | 855 |
| 1980 | 5 | 11 | 41 | 137 | 203 | 217 | 95 | 73 | 37 | 43 | 3 | 1 | 866 |
| 1981 | 2 | 25 | 33 | 84 | 187 | 223 | 98 | 64 | 26 | 32 | 7 | 1 | 782 |
| 1982 | 18 | 3 | 60 | 150 | 329 | 196 | 95 | 34 | 38 | 9 | 19 | 96 | 1047 |
| 1983 | 13 | 41 | 71 | 65 | 249 | 178 | 99 | 76 | 19 | 13 | 49 | 58 | 931 |
| 1984 | 1 | 27 | 73 | 176 | 169 | 242 | 72 | 47 | 17 | 49 | 30 | 4 | 907 |
| 1985 | 2 | 7 | 38 | 134 | 182 | 82 | 51 | 108 | 40 | 18 | 19 | 3 | 684 |
| 1986 | 0 | 30 | 76 | 84 | 173 | 134 | 88 | 67 | 65 | 26 | 17 | 5 | 765 |
| 1987 | 6 | 19 | 38 | 20 | 126 | 132 | 163 | 63 | 19 | 1 | 55 | 14 | 656 |
| 1988 | 17 | 4 | 28 | 58 | 132 | 63 | 103 | 61 | 76 | 19 | 121 | 20 | 702 |
| 1989 | 14 | 18 | 43 | 82 | 231 | 252 | 59 | 36 | 31 | 30 | 57 | 3 | 856 |
| 1990 | 11 | 57 | 86 | 108 | 243 | 329 | 106 | 60 | 45 | 35 | 18 | 35 | 1133 |
| 1991 | 29 | 11 | 157 | 204 | 335 | 216 | 64 | 46 | 26 | 21 | 20 | 3 | 1132 |
| 1992 | 15 | 29 | 55 | 53 | 137 | 399 | 213 | 115 | 81 | 34 | 146 | 20 | 1297 |
| 1993 | 17 | 34 | 48 | 85 | 177 | 313 | 242 | 112 | 65 | 55 | 19 | 6 | 1173 |
| 1994 | 13 | 9 | 58 | 205 | 161 | 234 | 155 | 120 | 30 | 51 | 42 | 4 | 1082 |
| 1995 | 36 | 7 | 49 | 130 | 391 | 216 | 162 | 53 | 19 | 74 | 79 | 18 | 1234 |
| 1996 | 35 | 14 | 71 | 177 | 235 | 128 | 202 | 72 | 101 | 68 | 55 | 15 | 1173 |
| 1997 | 50 | 23 | 102 | 114 | 225 | 193 | 188 | 84 | 32 | 100 | 25 | 12 | 1148 |
| 1998 | 47 | 72 | 72 | 82 | 310 | 376 | 82 | 61 | 104 | 86 | 26 | 6 | 1424 |
| 1999 | 212 | 22 | 56 | 177 | 310 | 289 | 102 | 79 | 56 | 17 | 7 | 15 | 1342 |