Every season
110 years, 7,551 formations. A reported date is the date a formation was found and reported, not the date it was made; a formation no source dates is listed under undated.
20262025202420232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001200019991998199719961995199419931992199119901989198819871986198519841983198219811980197919781977197619751974197319721971197019691968196719661965196419631962196019591958195719561955195419521951195019491948194719461945194319411940193919381937193619351934193319321930192719261925192419221920191819141910190418901880187918711686167816331590undated
One bar per year of report. The shape of this curve is coverage — who was publishing, and when — not a measurement of how many formations there were.
| season | formations | cc records | ccc records | tt records | images | texts | season lists |
|---|---|---|---|---|---|---|---|
| 2026 | 25 | 26 | 17 | 20 | 1,052 | 185 | 1 |
| 2025 | 18 | 18 | 7 | 9 | 401 | 62 | 1 |
| 2024 | 18 | 17 | 8 | 8 | 423 | 46 | 1 |
| 2023 | 31 | 30 | 22 | 18 | 1,263 | 160 | 1 |
| 2022 | 20 | 19 | 16 | 13 | 1,075 | 127 | 0 |
| 2021 | 36 | 32 | 27 | 15 | 1,216 | 169 | 1 |
| 2020 | 64 | 57 | 39 | 25 | 1,965 | 255 | 1 |
| 2019 | 66 | 60 | 42 | 16 | 2,044 | 292 | 1 |
| 2018 | 65 | 63 | 37 | 22 | 2,542 | 321 | 0 |
| 2017 | 62 | 59 | 36 | 24 | 2,089 | 270 | 0 |
| 2016 | 67 | 68 | 53 | 27 | 2,309 | 360 | 0 |
| 2015 | 100 | 89 | 71 | 27 | 2,972 | 483 | 0 |
| 2014 | 129 | 107 | 94 | 26 | 3,277 | 420 | 0 |
| 2013 | 106 | 103 | 0 | 0 | 352 | 0 | 0 |
| 2012 | 149 | 138 | 0 | 0 | 501 | 0 | 0 |
| 2011 | 146 | 138 | 0 | 0 | 443 | 0 | 0 |
| 2010 | 162 | 150 | 0 | 0 | 518 | 0 | 0 |
| 2009 | 167 | 157 | 0 | 0 | 588 | 0 | 0 |
| 2008 | 191 | 178 | 0 | 0 | 611 | 0 | 0 |
| 2007 | 191 | 173 | 0 | 0 | 584 | 0 | 0 |
| 2006 | 199 | 187 | 0 | 0 | 590 | 0 | 0 |
| 2005 | 240 | 227 | 0 | 0 | 461 | 0 | 0 |
| 2004 | 261 | 245 | 0 | 0 | 322 | 0 | 0 |
| 2003 | 293 | 277 | 0 | 0 | 336 | 0 | 0 |
| 2002 | 283 | 263 | 0 | 0 | 323 | 0 | 0 |
| 2001 | 237 | 215 | 0 | 0 | 293 | 0 | 0 |
| 2000 | 321 | 290 | 0 | 0 | 365 | 0 | 0 |
| 1999 | 305 | 281 | 0 | 0 | 333 | 0 | 0 |
| 1998 | 330 | 291 | 0 | 0 | 361 | 0 | 0 |
| 1997 | 285 | 260 | 0 | 0 | 303 | 0 | 0 |
| 1996 | 342 | 329 | 0 | 0 | 360 | 0 | 0 |
| 1995 | 258 | 245 | 0 | 0 | 262 | 0 | 0 |
| 1994 | 303 | 297 | 0 | 0 | 308 | 0 | 0 |
| 1993 | 234 | 233 | 0 | 0 | 242 | 0 | 0 |
| 1992 | 353 | 351 | 0 | 0 | 354 | 0 | 0 |
| 1991 | 283 | 281 | 0 | 0 | 287 | 0 | 0 |
| 1990 | 286 | 284 | 0 | 0 | 288 | 0 | 0 |
| 1989 | 150 | 150 | 0 | 0 | 150 | 0 | 0 |
| 1988 | 56 | 56 | 0 | 0 | 56 | 0 | 0 |
| 1987 | 67 | 67 | 0 | 0 | 67 | 0 | 0 |
| 1986 | 25 | 25 | 0 | 0 | 25 | 0 | 0 |
| 1985 | 17 | 17 | 0 | 0 | 17 | 0 | 0 |
| 1984 | 17 | 17 | 0 | 0 | 17 | 0 | 0 |
| 1983 | 16 | 16 | 0 | 0 | 16 | 0 | 0 |
| 1982 | 15 | 15 | 0 | 0 | 15 | 0 | 0 |
| 1981 | 15 | 15 | 0 | 0 | 15 | 0 | 0 |
| 1980 | 28 | 28 | 0 | 0 | 28 | 0 | 0 |
| 1979 | 17 | 17 | 0 | 0 | 17 | 0 | 0 |
| 1978 | 17 | 17 | 0 | 0 | 17 | 0 | 0 |
| 1977 | 30 | 30 | 0 | 0 | 32 | 0 | 0 |
| 1976 | 19 | 19 | 0 | 0 | 19 | 0 | 0 |
| 1975 | 23 | 23 | 0 | 0 | 23 | 0 | 0 |
| 1974 | 26 | 26 | 0 | 0 | 26 | 0 | 0 |
| 1973 | 26 | 26 | 0 | 0 | 26 | 0 | 0 |
| 1972 | 25 | 25 | 0 | 0 | 25 | 0 | 0 |
| 1971 | 29 | 29 | 0 | 0 | 33 | 0 | 0 |
| 1970 | 22 | 22 | 0 | 0 | 22 | 0 | 0 |
| 1969 | 32 | 32 | 0 | 0 | 32 | 0 | 0 |
| 1968 | 16 | 16 | 0 | 0 | 16 | 0 | 0 |
| 1967 | 23 | 23 | 0 | 0 | 23 | 0 | 0 |
| 1966 | 32 | 32 | 0 | 0 | 32 | 0 | 0 |
| 1965 | 17 | 17 | 0 | 0 | 17 | 0 | 0 |
| 1964 | 10 | 10 | 0 | 0 | 10 | 0 | 0 |
| 1963 | 9 | 9 | 0 | 0 | 9 | 0 | 0 |
| 1962 | 4 | 4 | 0 | 0 | 4 | 0 | 0 |
| 1960 | 9 | 9 | 0 | 0 | 9 | 0 | 0 |
| 1959 | 6 | 6 | 0 | 0 | 6 | 0 | 0 |
| 1958 | 4 | 4 | 0 | 0 | 4 | 0 | 0 |
| 1957 | 6 | 6 | 0 | 0 | 6 | 0 | 0 |
| 1956 | 3 | 3 | 0 | 0 | 3 | 0 | 0 |
| 1955 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1954 | 16 | 16 | 0 | 0 | 16 | 0 | 0 |
| 1952 | 6 | 6 | 0 | 0 | 6 | 0 | 0 |
| 1951 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1950 | 14 | 14 | 0 | 0 | 14 | 0 | 0 |
| 1949 | 3 | 3 | 0 | 0 | 3 | 0 | 0 |
| 1948 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1947 | 4 | 4 | 0 | 0 | 4 | 0 | 0 |
| 1946 | 5 | 5 | 0 | 0 | 5 | 0 | 0 |
| 1945 | 2 | 2 | 0 | 0 | 2 | 0 | 0 |
| 1943 | 3 | 3 | 0 | 0 | 3 | 0 | 0 |
| 1941 | 3 | 3 | 0 | 0 | 3 | 0 | 0 |
| 1940 | 5 | 5 | 0 | 0 | 5 | 0 | 0 |
| 1939 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1938 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1937 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1936 | 2 | 2 | 0 | 0 | 2 | 0 | 0 |
| 1935 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1934 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1933 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1932 | 2 | 2 | 0 | 0 | 3 | 0 | 0 |
| 1930 | 3 | 3 | 0 | 0 | 3 | 0 | 0 |
| 1927 | 2 | 2 | 0 | 0 | 2 | 0 | 0 |
| 1926 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1925 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1924 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1922 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1920 | 3 | 3 | 0 | 0 | 3 | 0 | 0 |
| 1918 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1914 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1910 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1904 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1890 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1880 | 2 | 2 | 0 | 0 | 2 | 0 | 0 |
| 1879 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1871 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1686 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1678 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1633 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 1590 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| undated | 15 | 1 | 1 | 9 | 68 | 10 | 0 |