| YEAR(S | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1929 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 340.50 | 0.00 | z | 622.50 | 0.00 | z | 31.50 | 0.00 | z | 0.00 | 994.50 | |||||
| 1930 | 0.00 | 0.00 | 0.00 | 0.00 | 11.48 | d | 247.50 | i | 636.50 | 575.00 | 231.50 | 19.00 | 0.00 | 0.00 | 1473.48 | |||||||||||
| 1931 | 0.00 | 0.00 | 3.50 | 22.50 | 183.00 | 371.50 | 683.00 | 578.00 | 189.00 | 24.50 | 7.00 | 0.00 | 2062.00 | |||||||||||||
| 1932 | 0.00 | a | 0.00 | 0.00 | 20.00 | 114.50 | 337.50 | 524.00 | 440.50 | 255.00 | 60.00 | 0.00 | 0.00 | 1751.50 | ||||||||||||
| 1933 | 0.00 | 0.00 | 1.50 | 13.50 | 79.50 | 443.00 | 636.00 | 491.00 | 188.50 | 73.50 | 0.00 | 0.50 | 1927.00 | |||||||||||||
| 1934 | 0.00 | 0.00 | 11.50 | 69.50 | 265.50 | 272.50 | 579.00 | 535.50 | 219.50 | 45.50 | 1.00 | 0.00 | 1999.50 | |||||||||||||
| 1935 | 0.00 | 0.00 | 0.00 | 5.50 | 65.50 | 205.50 | 436.50 | 472.00 | 264.00 | 69.50 | 0.00 | 0.00 | 1518.50 | |||||||||||||
| 1936 | 0.00 | 0.00 | a | 6.50 | 117.00 | 243.00 | 407.50 | 686.65 | a | 615.00 | 206.50 | 65.50 | 0.00 | c | 0.00 | 2347.65 | ||||||||||
| 1937 | 0.00 | 0.00 | 0.00 | 25.00 | 187.50 | 278.50 | 631.00 | 494.50 | 310.00 | 44.50 | 0.00 | 0.00 | 1971.00 | |||||||||||||
| 1938 | 0.00 | 0.00 | 0.00 | 37.50 | 118.50 | 325.50 | 592.50 | 482.00 | 375.50 | 34.00 | 0.00 | 0.00 | 1965.50 | |||||||||||||
| 1939 | 0.00 | a | 0.00 | 0.00 | 49.50 | 189.50 | 257.00 | 632.00 | 0.00 | z | 247.50 | 9.50 | 0.00 | 4.50 | 1389.50 | |||||||||||
| 1940 | 0.00 | 0.00 | 1.50 | 17.00 | 194.00 | 452.00 | 587.00 | 566.00 | 226.00 | 53.00 | 0.00 | 0.00 | 2096.50 | |||||||||||||
| 1941 | 0.00 | 0.00 | 5.00 | 15.00 | 173.50 | 294.50 | 647.50 | 536.50 | 132.00 | 37.00 | 4.50 | 0.00 | 1845.50 | |||||||||||||
| 1942 | 0.00 | 0.00 | 1.00 | 57.50 | 86.80 | a | 224.50 | 642.50 | 534.00 | 278.00 | 78.00 | 0.00 | 0.00 | 1902.30 | ||||||||||||
| 1943 | 0.00 | 0.00 | 16.50 | 73.00 | 122.50 | 230.50 | 552.50 | 498.50 | 383.00 | 116.00 | 0.00 | 0.00 | 1992.50 | |||||||||||||
| 1944 | 0.00 | 0.00 | 2.00 | 19.00 | 145.50 | 217.50 | 521.50 | 478.50 | 270.50 | 85.00 | 0.00 | 0.00 | 1739.50 | |||||||||||||
| 1945 | 0.00 | a | 0.00 | 0.00 | 41.00 | 127.50 | 239.00 | 640.00 | 556.50 | 207.50 | 129.50 | 0.00 | 0.00 | 1941.00 | ||||||||||||
| 1946 | 0.00 | 0.00 | 1.00 | 83.50 | 98.00 | 306.50 | 604.50 | 574.50 | 185.00 | 8.50 | 0.00 | 0.00 | 1861.50 | |||||||||||||
| 1947 | 0.00 | 0.00 | 0.50 | 27.50 | 275.50 | 227.68 | b | 582.00 | 526.00 | 289.00 | 105.00 | 5.50 | 0.00 | 2038.68 | ||||||||||||
| 1948 | 0.00 | 0.00 | 0.00 | 14.00 | 131.50 | 339.00 | 510.00 | 454.50 | 221.90 | a | 65.62 | a | 0.00 | 0.00 | a | 1736.51 | ||||||||||
| 1949 | 0.00 | 0.00 | a | 0.50 | 62.00 | 232.00 | 388.00 | 577.12 | a | 528.00 | 321.00 | 16.53 | a | 4.50 | 0.00 | 2129.65 | ||||||||||
| 1950 | 0.00 | a | 3.11 | a | 3.10 | a | 19.50 | 113.00 | 318.62 | a | 599.50 | 539.50 | 289.14 | a | 102.00 | 0.00 | 0.00 | 1987.47 | ||||||||
| 1951 | 0.00 | a | 3.00 | 0.00 | 25.00 | 182.00 | 247.00 | 589.00 | 514.60 | a | 273.50 | 43.50 | 0.00 | 0.00 | 1877.60 | |||||||||||
| 1952 | 40.00 | 0.00 | 0.00 | b | 71.00 | 136.00 | 287.00 | 562.50 | 520.50 | 315.00 | 98.00 | 0.00 | a | 0.00 | 2030.00 | |||||||||||
| 1953 | 2.00 | 1.50 | 1.50 | 52.00 | 79.80 | d | 198.62 | a | 591.50 | 538.00 | 312.00 | 65.50 | 6.00 | 0.00 | 1848.42 | |||||||||||
| 1954 | 0.00 | a | 0.00 | 2.00 | 41.50 | 262.00 | 256.00 | 616.50 | 416.50 | 205.00 | 30.48 | a | 7.00 | 0.00 | a | 1836.98 | ||||||||||
| 1955 | 0.00 | 0.00 | 0.00 | 3.50 | 89.90 | a | 342.50 | 514.50 | 570.50 | 240.00 | 76.50 | 3.00 | 3.50 | 1843.90 | ||||||||||||
| 1956 | 0.00 | 0.00 | 6.00 | 42.86 | b | 229.29 | b | 325.00 | 622.00 | 443.00 | 223.45 | a | 61.00 | 2.00 | v | 0.00 | e | 1952.60 | ||||||||
| 1957 | 0.00 | a | 0.00 | b | 0.55 | c | 24.83 | a | 119.00 | 368.79 | a | 516.00 | 445.50 | 267.32 | b | 12.50 | f | 0.00 | 0.00 | 1742.00 | ||||||
| 1958 | 0.00 | 0.00 | a | 0.00 | b | 13.50 | 272.59 | b | 336.00 | 543.50 | 611.22 | a | 252.32 | b | 110.00 | 6.00 | 0.00 | 2145.12 | ||||||||
| 1959 | 0.00 | 0.00 | 0.00 | 48.00 | 76.00 | 404.00 | 636.00 | 310.00 | l | 219.50 | 71.00 | 1.00 | 0.00 | 1455.50 | ||||||||||||
| 1960 | 0.00 | 0.00 | 8.00 | 32.00 | 108.50 | 384.00 | 670.50 | 404.00 | 305.00 | 56.50 | 0.00 | 0.00 | 1968.50 | |||||||||||||
| 1961 | 0.00 | 2.00 | 3.00 | 15.50 | 136.00 | 519.50 | 603.50 | 676.50 | 148.00 | 71.50 | 0.00 | 0.00 | 2175.50 | |||||||||||||
| 1962 | 0.00 | c | 0.00 | 0.00 | 69.00 | 82.67 | a | 314.00 | f | 484.50 | 451.57 | a | 302.07 | a | 28.50 | 0.58 | d | 0.00 | 1418.88 | |||||||
| 1963 | 0.00 | e | 0.00 | d | 4.65 | a | 17.00 | 163.00 | 271.73 | d | 452.50 | 511.00 | 261.50 | i | 133.50 | j | 4.44 | c | 0.00 | b | 1424.33 | |||||
| 1964 | 0.00 | 0.00 | 6.50 | h | 5.50 | 101.50 | 228.50 | 556.50 | 470.74 | d | 127.50 | 74.73 | c | 0.00 | 0.00 | e | 1564.97 | |||||||||
| 1965 | 0.00 | c | 0.00 | 0.00 | 49.62 | d | 40.41 | c | 257.00 | 488.25 | c | 424.00 | 91.11 | c | 67.00 | 0.00 | c | 0.00 | d | 1417.39 | ||||||
| 1966 | 0.00 | 0.00 | a | 1.03 | a | 33.89 | c | 138.50 | k | 186.00 | g | 514.50 | 504.50 | 283.50 | h | 16.10 | e | 3.00 | f | 0.00 | f | 1070.02 | ||||
| 1967 | 0.00 | b | 0.00 | a | 0.00 | j | 0.00 | d | 112.00 | k | 323.57 | b | 686.00 | 685.00 | 374.50 | 6.00 | n | 4.00 | f | 0.00 | r | 2069.07 | ||||
| 1968 | 0.00 | z | 0.00 | z | 0.00 | j | 18.33 | c | 50.00 | o | 335.00 | c | 413.00 | l | 393.59 | c | 242.68 | b | 38.23 | a | 0.00 | j | 0.00 | q | 1027.83 | |
| 1969 | 0.00 | 0.00 | f | 2.50 | h | 9.00 | t | 96.50 | o | 336.35 | d | 587.97 | a | 572.90 | e | 0.00 | z | 5.00 | f | 0.00 | o | 0.00 | n | 1497.22 | ||
| 1970 | 0.00 | i | 0.00 | e | 0.00 | q | 5.00 | i | 44.00 | o | 326.54 | d | 587.89 | c | 266.50 | q | 92.50 | n | 32.50 | n | 0.00 | m | 0.00 | l | 914.43 | |
| 1971 | 0.00 | h | 0.00 | p | 0.00 | z | 0.00 | o | 50.50 | s | 168.00 | i | 405.00 | j | 467.00 | h | 82.00 | k | 33.00 | q | 0.00 | p | 0.00 | m | 0.00 | |
| 1972 | 0.00 | h | 0.00 | z | 4.00 | l | 14.50 | g | 214.42 | a | 390.52 | a | 434.50 | f | 534.46 | d | 138.00 | f | 25.66 | b | 0.00 | c | 0.00 | a | 1165.05 | |
| 1973 | 0.00 | e | 0.00 | b | 0.00 | g | 5.00 | c | 183.02 | e | 353.28 | a | 556.45 | a | 492.12 | c | 216.72 | a | 26.50 | k | 4.50 | h | 0.00 | n | 1806.59 | |
| 1974 | 0.00 | h | 0.00 | k | 0.00 | j | 4.00 | g | 112.38 | c | 464.46 | b | 551.05 | b | 369.50 | h | 251.79 | b | 45.31 | e | 0.00 | k | 0.00 | j | 1424.98 | |
| 1975 | 0.00 | p | 0.00 | j | 0.00 | r | 0.00 | i | 66.50 | m | 185.00 | j | 657.72 | a | 302.50 | j | 267.78 | c | 53.50 | n | 0.00 | i | 0.00 | m | 925.49 | |
| 1976 | 0.00 | o | 0.00 | o | 0.00 | m | 5.40 | e | 133.00 | i | 266.25 | b | 587.34 | c | 376.43 | c | 165.00 | k | 2.50 | r | 0.00 | l | 0.00 | j | 1235.42 | |
| 1977 | 0.00 | e | 0.00 | i | 0.00 | r | 76.00 | j | 23.00 | h | 502.24 | a | 476.00 | f | 465.50 | g | 258.89 | c | 39.94 | e | 0.00 | j | 0.00 | j | 801.07 | |
| 1978 | 0.00 | c | 0.00 | h | 13.00 | k | 9.60 | e | 41.00 | g | 249.44 | c | 557.00 | 406.00 | g | 202.76 | a | 37.09 | c | 0.50 | m | 0.00 | b | 1055.89 | ||
| 1979 | 0.00 | i | 0.00 | h | 0.00 | h | 14.44 | c | 118.50 | h | 356.79 | b | 606.22 | d | 525.40 | b | 309.64 | b | 110.80 | d | 0.00 | 0.00 | m | 1923.29 | ||
| 1980 | 0.00 | f | 2.50 | m | 0.00 | k | 27.00 | k | 73.50 | h | 161.50 | f | 555.93 | a | 420.71 | c | 238.20 | e | 75.36 | b | 11.79 | b | 0.00 | e | 1302.00 | |
| 1981 | 0.00 | k | 0.00 | g | 0.00 | u | 0.00 | z | 0.00 | z | 157.50 | n | 490.00 | 566.61 | d | 172.00 | k | 9.00 | f | 2.22 | c | 0.00 | i | 1058.83 | ||
| 1982 | 0.00 | a | 0.00 | j | 0.00 | 12.00 | 93.00 | 332.00 | 517.00 | 523.26 | b | 199.50 | 13.00 | k | 0.00 | j | 0.00 | 1676.76 | ||||||||
| 1983 | 0.00 | 0.00 | 2.00 | 5.89 | b | 169.00 | 288.50 | 480.00 | 580.00 | 240.50 | 31.00 | l | 6.00 | k | 0.00 | n | 1765.89 | |||||||||
| 1984 | 0.00 | k | 0.00 | t | 0.00 | z | 16.50 | p | 125.00 | j | 246.50 | 658.00 | 311.00 | o | 250.50 | 29.50 | p | 5.50 | n | 0.00 | 1155.00 | |||||
| 1985 | 0.00 | 0.00 | m | 0.00 | k | 77.00 | 172.00 | 371.50 | 704.50 | 265.50 | l | 60.50 | g | 24.00 | 1.00 | 0.00 | r | 1350.00 | ||||||||
| 1986 | 0.00 | r | 1.50 | t | 10.00 | k | 20.50 | 121.50 | k | 467.50 | 478.43 | a | 654.10 | a | 160.50 | 9.00 | i | 0.00 | s | 0.00 | 1781.03 | |||||
| 1987 | 0.00 | 0.00 | 11.00 | 108.00 | 212.50 | 399.50 | 439.00 | 445.00 | 280.00 | 69.00 | 3.50 | 0.00 | a | 1967.50 | ||||||||||||
| 1988 | 0.00 | b | 0.00 | 1.50 | 30.00 | 168.00 | 432.41 | a | 622.50 | 360.00 | h | 109.50 | p | 46.00 | t | 0.00 | o | 0.00 | z | 1254.41 | ||||||
| 1989 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 8.50 | 0.00 | z | 685.00 | 492.00 | 248.00 | 49.00 | 0.00 | f | 0.00 | 1482.50 | |||||||
| 1990 | 0.00 | 0.00 | z | 0.00 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 4.00 | 0.00 | 4.00 | |||||
| 1991 | 0.00 | z | 0.00 | 0.00 | z | 7.00 | 51.00 | 89.00 | p | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | 0.00 | z | 58.00 | |||||
| 1992 | 0.00 | z | 0.00 | z | 0.00 | q | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1993 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1.00 | 1.00 | ||
| 1994 | 0.00 | 0.00 | 2.00 | 57.00 | 188.00 | 342.00 | 586.50 | 502.00 | 256.50 | 16.00 | 0.00 | 0.00 | 1950.00 | |||||||||||||
| 1995 | 0.00 | 1.00 | 1.00 | 12.00 | 119.00 | 229.50 | 479.50 | 390.00 | 251.00 | 14.50 | 10.00 | 0.00 | 1507.50 | |||||||||||||
| 1996 | 0.00 | 0.00 | 0.00 | 32.00 | 88.00 | 315.00 | 583.50 | 498.50 | 166.00 | 106.00 | 3.00 | 0.00 | a | 1792.00 | ||||||||||||
| 1997 | 0.00 | 0.00 | 18.50 | 18.00 | 222.50 | 281.00 | 476.00 | 496.00 | 275.00 | 29.50 | 0.00 | 0.00 | 1816.50 | |||||||||||||
| 1998 | 0.00 | 0.00 | 1.50 | 39.50 | 62.00 | 191.50 | 0.00 | z | 563.50 | 334.50 | 13.00 | 0.00 | 0.00 | 1205.50 | ||||||||||||
| 1999 | 0.00 | 0.00 | 0.00 | 9.50 | 136.00 | 251.00 | 498.50 | 521.50 | 202.50 | 52.00 | 9.00 | 0.00 | a | 1680.00 | ||||||||||||
| 2000 | 0.00 | a | 0.00 | a | 0.00 | a | 46.55 | a | 174.50 | 295.00 | g | 0.00 | z | 531.00 | 194.50 | 7.75 | a | 0.00 | 0.00 | a | 954.30 | |||||
| 2001 | 0.00 | 0.00 | a | 9.54 | e | 45.00 | 215.93 | b | 322.50 | 398.00 | j | 423.00 | h | 275.00 | 22.70 | c | 0.50 | 0.00 | 891.17 | |||||||
| 2002 | 0.00 | 0.00 | z | 0.00 | 21.00 | 151.00 | 373.00 | 638.50 | 273.00 | i | 0.00 | z | 0.00 | 0.00 | 0.00 | 1183.50 | ||||||||||
| 2003 | 2.50 | 0.00 | 15.00 | 3.00 | 0.00 | z | 0.00 | z | 0.00 | z | 505.50 | 0.00 | z | 0.00 | z | 0.00 | 0.00 | 526.00 | ||||||||
| 2004 | 0.00 | 0.00 | 8.00 | 27.50 | 70.50 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | t | 0.00 | 0.00 | 106.00 | ||||||||
| 2005 | 0.00 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | ||
| 2006 | 0.00 | z | 0.00 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | ||
| 2007 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 2008 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 2009 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 2010 | 0.00 | z | 0.00 | z | 0.00 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | 0.00 | 0.00 | ||||
| 2011 | 0.00 | 0.00 | c | 0.00 | 2.14 | b | 29.50 | 177.00 | 514.00 | 595.72 | a | 353.00 | 51.67 | a | 0.00 | a | 0.00 | 1723.03 | ||||||||
| 2012 | 0.00 | b | 0.00 | 1.66 | c | 60.00 | 103.33 | a | 250.86 | a | 672.18 | a | 600.76 | b | 263.57 | b | 60.40 | b | 6.50 | g | 0.00 | 2012.77 | ||||
| 2013 | 0.00 | f | 0.00 | a | 0.00 | b | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.72 | 0.18 | 2.72 | 32.06 | 141.04 | 318.70 | 576.87 | 517.78 | 248.09 | 53.18 | 1.71 | 0.16 | 1896.96 | |||||||||||||
| S.D. | 5.09 | 0.65 | 4.45 | 26.31 | 66.60 | 78.96 | 68.33 | 68.85 | 60.17 | 31.63 | 2.93 | 0.73 | 192.47 | |||||||||||||
| SKEW | 7.61 | 3.63 | 2.05 | 1.14 | 0.16 | 0.45 | -0.17 | 0.16 | -0.04 | 0.44 | 1.75 | 5.10 | -0.37 | |||||||||||||
| MAX | 40.00 | 3.11 | 18.50 | 117.00 | 275.50 | 519.50 | 704.50 | 685.00 | 383.00 | 129.50 | 11.79 | 4.50 | 2347.65 | |||||||||||||
| MIN | 0.00 | 0.00 | 0.00 | 0.00 | 8.50 | 177.00 | 436.50 | 376.43 | 91.11 | 0.00 | 0.00 | 0.00 | 1417.39 | |||||||||||||
| NO YRS | 62 | 58 | 56 | 63 | 58 | 63 | 64 | 60 | 60 | 57 | 56 | 61 | 35 | |||||||||||||