YEAR(S | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 239.98 | b | 193.00 | 142.00 | 226.50 | 348.50 | 356.50 | 1506.48 | ||||||
1940 | 396.00 | 343.50 | 341.00 | 286.00 | 284.50 | 216.00 | 170.00 | 168.00 | 97.50 | 241.50 | 304.00 | 335.00 | 3183.00 | |||||||||||||
1941 | 381.50 | 301.50 | 272.00 | 330.50 | 166.00 | 180.00 | 168.50 | 71.50 | m | 167.50 | 311.00 | 245.50 | 404.00 | 2928.00 | ||||||||||||
1942 | 412.00 | 397.50 | 437.50 | 353.50 | 288.50 | 249.00 | 159.50 | 196.50 | 199.50 | 309.00 | 370.00 | 455.50 | 3828.00 | |||||||||||||
1943 | 468.50 | 337.50 | 365.00 | 342.50 | 316.00 | 276.00 | 220.00 | 210.00 | 150.50 | 259.00 | 266.00 | 416.50 | 3627.50 | |||||||||||||
1944 | 434.00 | 479.00 | 424.50 | 411.50 | 346.00 | 262.50 | 244.00 | 244.50 | 272.50 | 247.50 | 359.50 | 368.50 | 4094.00 | |||||||||||||
1945 | 508.00 | 408.00 | 497.00 | 420.00 | 325.00 | 238.00 | 183.50 | 285.50 | 213.50 | 255.00 | 346.50 | 403.00 | 4083.00 | |||||||||||||
1946 | 502.00 | 486.50 | 488.00 | 413.00 | 352.00 | 250.50 | 209.00 | 246.00 | 204.00 | 310.00 | 404.00 | 432.00 | 4297.00 | |||||||||||||
1947 | 575.00 | 370.00 | 359.00 | 307.50 | 292.50 | 213.50 | 167.50 | 122.50 | 183.00 | 220.00 | 422.50 | 494.00 | 3727.00 | |||||||||||||
1948 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 230.50 | 199.00 | 253.00 | 226.50 | 372.00 | 579.00 | 1860.00 | |||||||
1949 | 683.50 | 516.50 | 407.00 | 404.50 | 311.50 | 234.00 | 273.50 | 196.50 | 122.00 | n | 376.98 | c | 0.00 | z | 0.00 | z | 3403.98 | |||||||||
1950 | 0.00 | z | 427.84 | c | 452.50 | 287.00 | i | 399.00 | 290.00 | 263.50 | 229.06 | d | 204.00 | 245.00 | 171.00 | 341.00 | 3022.90 | |||||||||
1951 | 484.50 | 408.00 | 477.50 | 431.50 | 313.50 | 321.00 | 297.50 | 272.00 | 180.00 | 276.00 | 339.50 | 486.00 | 4287.00 | |||||||||||||
1952 | 546.50 | 418.00 | 478.00 | 408.00 | 366.50 | 317.50 | 206.50 | 189.00 | 131.50 | 241.00 | 358.50 | 424.00 | 4085.00 | |||||||||||||
1953 | 347.50 | 150.00 | o | 0.00 | z | 327.50 | f | 321.50 | 261.50 | 287.00 | 191.00 | 117.50 | 276.50 | 372.00 | 477.00 | 2651.50 | ||||||||||
1954 | 548.00 | 342.50 | 517.00 | 382.00 | 342.50 | 275.00 | 253.50 | 250.50 | 220.00 | 264.00 | 309.00 | 446.50 | 4150.50 | |||||||||||||
1955 | 565.00 | 458.00 | 445.00 | 480.50 | 388.00 | 293.50 | 303.50 | 310.50 | 303.00 | 308.00 | 406.55 | a | 336.50 | f | 4261.55 | |||||||||||
1956 | 437.74 | b | 489.00 | 429.50 | 375.50 | 300.04 | c | 226.61 | b | 212.00 | 269.50 | 157.24 | a | 246.00 | 262.24 | a | 413.50 | 3818.87 | ||||||||
1957 | 535.50 | 339.00 | 386.39 | c | 314.50 | 251.32 | c | 199.50 | 190.59 | d | 198.92 | a | 135.54 | b | 171.02 | a | 316.50 | 370.50 | 3409.28 | |||||||
1958 | 387.50 | d | 225.00 | g | 407.81 | b | 301.50 | 230.00 | 98.50 | 158.50 | 149.66 | b | 111.00 | 251.00 | 327.00 | 313.50 | 2735.97 | |||||||||
1959 | 386.00 | 387.00 | 328.82 | c | 294.64 | b | 280.50 | 219.00 | 168.00 | 132.50 | 153.00 | 177.22 | a | 210.50 | g | 362.38 | b | 2889.06 | ||||||||
1960 | 474.00 | 386.00 | 349.50 | 331.50 | 299.50 | 189.50 | 220.50 | 238.00 | 219.00 | 257.50 | 315.50 | 360.00 | 3640.50 | |||||||||||||
1961 | 340.00 | 351.50 | 408.00 | 335.50 | 293.00 | 177.00 | 180.00 | 97.50 | 150.50 | 229.00 | 383.50 | 491.50 | 3437.00 | |||||||||||||
1962 | 424.00 | 418.50 | 469.00 | 344.50 | 350.50 | 306.50 | 295.50 | 200.00 | 232.76 | a | 245.00 | 327.50 | 432.50 | 4046.26 | ||||||||||||
1963 | 526.47 | b | 293.00 | 464.50 | 386.50 | 325.50 | 294.00 | e | 209.50 | 230.00 | 117.50 | h | 171.50 | 288.00 | 412.50 | 3601.47 | ||||||||||
1964 | 484.00 | 366.50 | 457.00 | 420.00 | 409.00 | 270.00 | 214.50 | 140.00 | g | 197.50 | 219.00 | 356.00 | 422.00 | 3815.50 | ||||||||||||
1965 | 422.00 | 439.00 | 416.50 | 347.00 | 349.50 | 306.72 | a | 280.00 | 147.00 | 191.50 | 172.50 | 268.50 | 525.50 | 3865.72 | ||||||||||||
1966 | 455.00 | 448.50 | 454.00 | 323.00 | 416.50 | 284.50 | 289.00 | 224.50 | 173.50 | 197.00 | 299.50 | 441.00 | 4006.00 | |||||||||||||
1967 | 405.58 | a | 331.00 | 442.50 | 469.00 | 366.00 | 296.00 | 198.00 | 200.50 | 107.00 | 159.50 | 229.50 | 458.50 | 3663.08 | ||||||||||||
1968 | 407.00 | 311.50 | 344.50 | 364.50 | 327.00 | 266.00 | 225.00 | 165.00 | 177.50 | 275.00 | 352.50 | 478.00 | 3693.50 | |||||||||||||
1969 | 543.50 | 490.00 | 427.50 | 447.00 | 362.00 | 279.00 | 315.00 | 323.50 | 229.00 | 287.00 | 244.00 | 341.00 | 4288.50 | |||||||||||||
1970 | 338.00 | 332.00 | 382.00 | 408.00 | 299.00 | 317.50 | 297.50 | 306.00 | 209.50 | 270.50 | 265.00 | 475.00 | 3900.00 | |||||||||||||
1971 | 432.50 | 398.00 | 434.00 | 440.00 | 413.00 | 329.50 | 352.00 | 207.50 | 185.00 | 378.50 | 372.00 | 567.00 | 4509.00 | |||||||||||||
1972 | 546.00 | 391.00 | 379.23 | a | 397.00 | 387.50 | 295.50 | 226.00 | 150.00 | 141.00 | 160.00 | 318.50 | 520.28 | a | 3912.02 | |||||||||||
1973 | 481.00 | 312.00 | 0.00 | z | 338.50 | 331.50 | 231.00 | 232.50 | 239.00 | 179.00 | 240.00 | 372.50 | 422.00 | 3379.00 | ||||||||||||
1974 | 500.00 | 419.50 | 392.50 | 376.50 | 375.50 | 262.50 | 191.00 | 165.00 | 171.00 | 209.50 | 324.50 | 463.00 | 3850.50 | |||||||||||||
1975 | 466.66 | c | 403.00 | 455.00 | 479.50 | 359.50 | 312.50 | 268.50 | 249.50 | 243.00 | 321.50 | 392.00 | 449.50 | e | 4400.16 | |||||||||||
1976 | 437.00 | 425.33 | b | 479.97 | b | 442.50 | 328.00 | 252.00 | 216.50 | 105.00 | 148.50 | 204.17 | b | 254.50 | 383.00 | 3676.47 | ||||||||||
1977 | 426.00 | 336.50 | 464.00 | 429.00 | 353.00 | 264.50 | 234.50 | 126.58 | a | 162.00 | e | 275.00 | 371.79 | b | 344.50 | 3787.37 | ||||||||||
1978 | 333.50 | 331.00 | 258.00 | 331.50 | 296.50 | 234.50 | 220.00 | 186.00 | 175.50 | 278.50 | 423.00 | 538.22 | b | 3606.22 | ||||||||||||
1979 | 485.50 | 428.00 | 382.00 | 382.00 | 324.00 | 289.50 | 206.50 | 176.50 | 110.69 | a | 164.00 | 325.00 | 352.00 | 3625.69 | ||||||||||||
1980 | 409.50 | 281.50 | 390.50 | 358.50 | 332.00 | 237.50 | 170.00 | 202.50 | 199.50 | 285.50 | 327.69 | d | 326.00 | 3520.69 | ||||||||||||
1981 | 360.50 | 312.00 | 368.00 | 362.00 | 331.00 | 213.00 | 245.50 | 193.50 | 200.50 | 298.00 | 241.50 | 373.55 | a | 3499.05 | ||||||||||||
1982 | 501.00 | 358.00 | 411.50 | 339.00 | 337.50 | 210.50 | 203.00 | 188.00 | 168.00 | 216.50 | 319.00 | 399.50 | 3651.50 | |||||||||||||
1983 | 379.00 | 313.00 | 335.00 | 331.00 | 287.27 | a | 211.61 | b | 158.00 | 69.50 | 67.50 | d | 126.50 | 315.00 | 400.23 | c | 2993.61 | |||||||||
1984 | 398.00 | 401.34 | a | 369.50 | 395.50 | 327.10 | b | 290.50 | 153.50 | 154.00 | 127.00 | 283.28 | b | 362.00 | 470.00 | 3731.72 | ||||||||||
1985 | 468.10 | a | 388.37 | a | 477.00 | 357.41 | a | 318.27 | a | 217.00 | 192.50 | 166.50 | 169.50 | 250.00 | 0.00 | z | 411.50 | 3416.15 | ||||||||
1986 | 325.00 | 285.00 | 306.50 | 378.50 | 369.50 | 177.50 | 175.00 | 162.00 | 184.50 | 245.50 | 306.00 | 413.00 | 3328.00 | |||||||||||||
1987 | 476.50 | 342.50 | 413.00 | 344.00 | 274.50 | 126.50 | o | 0.00 | z | 143.00 | 182.50 | 195.00 | 288.00 | 465.50 | 3124.50 | |||||||||||
1988 | 436.00 | 353.00 | 435.00 | 352.00 | 211.50 | m | 254.50 | 81.00 | s | 0.00 | z | 241.00 | 262.50 | 354.50 | 470.00 | 3158.50 | ||||||||||
1989 | 521.50 | 529.50 | 399.50 | 280.50 | 320.00 | 225.00 | 227.00 | 186.00 | 189.00 | 266.00 | 163.00 | f | 358.50 | 3502.50 | ||||||||||||
1990 | 431.33 | b | 458.37 | a | 415.00 | 319.00 | 306.00 | 256.00 | 184.50 | 126.00 | 148.00 | 330.00 | 394.50 | 599.50 | 3968.20 | |||||||||||
1991 | 531.00 | 393.00 | 537.00 | 469.50 | 478.50 | 363.50 | 245.00 | 182.00 | 219.00 | 267.00 | 337.50 | 436.14 | b | 4459.14 | ||||||||||||
1992 | 434.50 | 272.00 | 280.50 | 244.00 | 237.50 | 180.00 | 111.50 | 215.40 | b | 191.00 | 181.50 | 316.55 | a | 470.00 | 3134.45 | |||||||||||
1993 | 472.00 | 373.00 | 331.00 | 416.00 | 292.50 | 254.00 | 275.00 | 161.00 | 0.00 | z | 243.50 | 219.50 | i | 454.50 | 3272.50 | |||||||||||
1994 | 273.50 | j | 404.00 | 364.00 | 356.50 | 221.00 | i | 291.00 | 243.00 | 204.50 | 149.00 | 259.50 | 457.00 | 512.50 | 3241.00 | |||||||||||
1995 | 383.00 | 285.00 | 356.50 | 352.50 | 310.00 | 279.00 | 134.00 | 184.50 | 156.50 | 206.00 | 319.00 | 375.00 | 3341.00 | |||||||||||||
1996 | 389.50 | 320.50 | 362.50 | 319.50 | 313.50 | 311.00 | 232.50 | 224.00 | 234.50 | 280.00 | 327.00 | 346.50 | 3661.00 | |||||||||||||
1997 | 411.00 | 382.00 | 426.50 | 360.00 | 216.00 | 233.50 | 180.00 | 83.50 | 63.50 | 211.00 | 212.50 | 371.50 | 3151.00 | |||||||||||||
1998 | 364.00 | 365.50 | 377.00 | 346.00 | 292.50 | 215.50 | 221.50 | 191.50 | 177.50 | 286.50 | 381.00 | 511.00 | 3729.50 | |||||||||||||
1999 | 436.50 | 450.50 | 499.50 | 401.50 | 432.50 | 315.50 | 245.00 | 169.00 | 192.50 | 258.50 | 317.00 | 432.00 | 4150.00 | |||||||||||||
2000 | 408.50 | 352.50 | 413.00 | 332.50 | 302.50 | 203.50 | 207.50 | 192.00 | 127.00 | 240.00 | 384.50 | 334.50 | 3498.00 | |||||||||||||
2001 | 457.00 | 387.50 | 382.00 | 436.50 | 73.00 | w | 138.50 | n | 209.50 | 192.50 | 218.50 | 221.00 | 0.00 | z | 0.00 | z | 2504.50 | |||||||||
2002 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 204.50 | 176.00 | 189.00 | h | 231.50 | i | 202.00 | m | 232.50 | m | 380.50 | |||
2003 | 255.50 | 193.50 | m | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 118.20 | e | 262.50 | 351.50 | 393.00 | 1380.70 | |||||
2004 | 441.50 | 431.00 | 330.00 | 322.50 | 265.50 | 232.50 | 127.00 | 100.50 | 240.50 | 262.50 | 336.50 | 420.00 | 3510.00 | |||||||||||||
2005 | 439.00 | 318.00 | 308.50 | 366.00 | 224.00 | 233.00 | 176.00 | 199.50 | 230.50 | 328.00 | 287.50 | 368.50 | 3478.50 | |||||||||||||
2006 | 442.50 | 399.00 | 499.50 | 332.00 | 295.00 | 189.50 | 186.50 | 161.50 | 256.00 | 254.00 | 357.00 | 436.00 | 3808.50 | |||||||||||||
2007 | 588.50 | 388.50 | 454.00 | 416.50 | 314.50 | 267.50 | 154.00 | 154.00 | 196.00 | 301.00 | 360.00 | 536.50 | 4131.00 | |||||||||||||
2008 | 517.50 | 463.50 | 487.50 | 454.00 | 349.00 | 299.50 | 196.00 | 173.50 | 238.00 | 276.00 | 288.50 | 505.50 | 4248.50 | |||||||||||||
2009 | 362.50 | 391.50 | 442.00 | 387.50 | 333.50 | 173.00 | 182.50 | 138.50 | 189.00 | 258.00 | 385.00 | 489.50 | 3732.50 | |||||||||||||
2010 | 381.50 | 346.50 | 410.00 | 383.50 | 365.50 | 235.00 | 197.50 | 186.50 | 213.00 | 266.00 | 390.50 | 407.00 | 3782.50 | |||||||||||||
2011 | 400.93 | a | 440.22 | a | 400.00 | 365.00 | 316.50 | 251.00 | 202.50 | 206.50 | 205.86 | a | 188.00 | 401.50 | 524.00 | 3902.02 | ||||||||||
2012 | 431.50 | 438.50 | 453.12 | a | 342.50 | 347.50 | 272.59 | a | 203.50 | 219.00 | 269.50 | 215.34 | c | 245.56 | c | 453.63 | a | 3892.23 | ||||||||
2013 | 441.00 | 471.69 | b | 441.00 | 9.50 | 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 | 1353.69 | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 446.03 | 385.76 | 409.40 | 371.64 | 324.34 | 252.54 | 215.80 | 189.97 | 182.31 | 249.01 | 330.57 | 431.71 | 3788.69 | |||||||||||||
S.D. | 72.71 | 60.66 | 60.52 | 51.04 | 52.28 | 47.22 | 47.44 | 50.93 | 47.73 | 49.00 | 55.45 | 65.71 | 347.75 | |||||||||||||
SKEW | 0.39 | 0.20 | -0.32 | 0.18 | -0.04 | -0.38 | 0.44 | 0.23 | -0.13 | 0.03 | -0.41 | 0.35 | -0.03 | |||||||||||||
MAX | 683.50 | 529.50 | 537.00 | 480.50 | 478.50 | 363.50 | 352.00 | 323.50 | 303.00 | 378.50 | 457.00 | 599.50 | 4509.00 | |||||||||||||
MIN | 255.50 | 272.00 | 258.00 | 244.00 | 166.00 | 98.50 | 111.50 | 69.50 | 63.50 | 126.50 | 171.00 | 313.50 | 2993.61 | |||||||||||||
NO YRS | 70 | 69 | 69 | 68 | 67 | 68 | 71 | 70 | 70 | 73 | 67 | 70 | 53 |