| YEAR(S | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1974 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 601.00 | 374.48 | a | 64.00 | 4.14 | a | 0.00 | a | 1043.62 | |||
| 1975 | 0.00 | a | 0.00 | 1.50 | 6.00 | 194.50 | 396.50 | 725.50 | 518.00 | 422.00 | 103.00 | 16.07 | b | 0.00 | a | 2383.07 | ||||||||||
| 1976 | 0.00 | 0.00 | a | 15.00 | 56.00 | 318.00 | 418.50 | 671.00 | 434.50 | 365.00 | 83.00 | 2.00 | 0.00 | 2363.00 | ||||||||||||
| 1977 | 0.00 | b | 0.52 | a | 3.00 | 127.00 | 90.00 | 609.00 | 660.82 | a | 665.00 | 340.50 | 102.30 | a | 12.69 | d | 1.50 | 2612.33 | ||||||||
| 1978 | 0.00 | 0.00 | 39.27 | a | 28.39 | b | 153.50 | 388.45 | a | 659.00 | 553.00 | 248.33 | c | 127.50 | 0.00 | a | 0.00 | c | 2197.44 | |||||||
| 1979 | 0.00 | c | 0.50 | 4.28 | b | 19.50 | f | 297.08 | a | 432.12 | d | 680.93 | b | 566.61 | d | 405.00 | 173.17 | b | 2.00 | 0.00 | d | 2561.69 | ||||
| 1980 | 2.50 | f | 0.00 | 0.00 | i | 80.50 | 117.50 | m | 273.50 | k | 673.22 | a | 487.73 | a | 243.75 | b | 104.50 | 13.27 | d | 0.00 | i | 1602.97 | ||||
| 1981 | 0.00 | b | 2.07 | a | 0.52 | a | 89.00 | 220.00 | 477.12 | d | 0.00 | z | 472.23 | a | 419.00 | 24.00 | 4.00 | j | 1.00 | 1704.94 | ||||||
| 1982 | 0.00 | 7.50 | 0.00 | 40.00 | 257.50 | 442.00 | 655.50 | 473.50 | g | 325.50 | 65.00 | 0.00 | 6.00 | 1799.00 | ||||||||||||
| 1983 | 0.00 | 0.50 | 11.00 | 9.50 | 243.00 | 435.50 | 551.50 | 615.00 | 371.90 | a | 81.50 | 6.50 | m | 0.00 | 2319.40 | |||||||||||
| 1984 | 0.00 | 0.00 | 3.50 | 37.00 | 307.00 | 393.50 | 777.50 | 698.53 | a | 381.50 | 49.50 | 9.00 | 0.00 | 2657.03 | ||||||||||||
| 1985 | 0.00 | 0.00 | 0.52 | a | 128.00 | 240.00 | 618.50 | 756.50 | 550.00 | 173.79 | a | 22.00 | i | 0.00 | 0.00 | 2467.31 | ||||||||||
| 1986 | 0.00 | 2.07 | a | 60.50 | 71.50 | 277.00 | 574.00 | 379.50 | l | 736.00 | 197.50 | 14.00 | o | 0.00 | 0.00 | 1918.57 | ||||||||||
| 1987 | 0.00 | 0.00 | 18.50 | 129.31 | a | 328.50 | 535.00 | 618.50 | 704.00 | 454.50 | 157.50 | 0.00 | 10.50 | 2956.31 | ||||||||||||
| 1988 | 0.00 | a | 0.00 | 13.50 | 88.00 | 247.00 | 655.50 | 365.50 | r | 739.02 | c | 389.50 | 234.00 | 22.00 | 0.00 | 2388.52 | ||||||||||
| 1989 | 0.00 | 2.07 | a | 43.40 | a | 188.00 | 241.50 | 547.00 | 784.00 | 563.00 | 392.00 | 121.50 | 1.00 | 0.00 | 2883.47 | |||||||||||
| 1990 | 2.00 | 0.00 | 25.50 | 103.00 | i | 179.50 | 510.50 | 759.00 | 683.50 | 507.50 | 162.00 | 0.00 | 0.00 | 2829.50 | ||||||||||||
| 1991 | 0.00 | 0.00 | 0.00 | 37.00 | 124.00 | 371.50 | 771.00 | 732.63 | a | 449.00 | 238.50 | 12.50 | 0.00 | 2736.13 | ||||||||||||
| 1992 | 0.00 | 0.00 | 18.00 | 194.00 | 443.50 | 505.00 | 697.50 | 721.50 | 432.50 | 161.50 | 8.50 | 0.00 | 3182.00 | |||||||||||||
| 1993 | 0.00 | 0.00 | 50.00 | 59.50 | 326.00 | 351.50 | 576.50 | 574.02 | a | 384.50 | 110.00 | 0.00 | 0.00 | 2432.02 | ||||||||||||
| 1994 | 0.00 | 5.50 | 36.50 | 149.40 | e | 315.00 | 541.50 | 839.50 | 698.50 | 408.00 | 80.50 | 0.00 | 0.00 | 3074.40 | ||||||||||||
| 1995 | 0.00 | 3.50 | 21.00 | 60.50 | 178.50 | 369.00 | 656.50 | 653.50 | 464.50 | 131.50 | 29.50 | 12.00 | 2580.00 | |||||||||||||
| 1996 | 0.00 | 2.00 | 6.00 | 104.50 | 250.00 | 499.00 | 810.00 | 692.50 | 340.50 | 184.50 | 14.00 | 1.50 | 2904.50 | |||||||||||||
| 1997 | 16.50 | 0.00 | 56.00 | 102.50 | 375.74 | b | 446.50 | 667.00 | 705.50 | 441.50 | 99.50 | 2.00 | 0.00 | 2912.74 | ||||||||||||
| 1998 | 2.50 | 0.00 | 19.12 | a | 55.50 | 85.50 | 388.00 | 0.00 | z | 733.00 | 454.50 | 54.00 | 0.00 | 0.00 | 1792.12 | |||||||||||
| 1999 | 0.00 | d | 3.50 | 3.62 | a | 72.12 | d | 247.45 | c | 474.50 | 728.00 | 651.00 | d | 395.50 | 109.00 | k | 17.50 | 0.00 | 2593.18 | |||||||
| 2000 | 1.50 | 3.90 | c | 17.50 | 113.00 | 329.00 | 598.50 | 0.00 | z | 0.00 | z | 385.86 | a | 135.88 | a | 0.00 | c | 0.00 | i | 1585.15 | ||||||
| 2001 | 0.00 | x | 1.00 | 53.00 | 111.43 | b | 454.31 | b | 0.00 | z | 263.00 | t | 101.50 | z | 0.00 | z | 86.50 | g | 2.50 | 0.00 | a | 622.24 | ||||
| 2002 | 0.00 | 0.00 | 4.00 | 103.50 | 205.00 | 531.50 | 896.00 | 710.00 | 410.50 | 53.00 | 0.00 | 0.00 | 2913.50 | |||||||||||||
| 2003 | 2.50 | 0.00 | e | 27.26 | b | 11.50 | g | 298.93 | c | 522.50 | 915.00 | 705.52 | b | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 2471.70 | ||||
| 2004 | 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 | |
| 2005 | 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 | |
| 2006 | 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 | |
| 2007 | 0.00 | i | 0.00 | e | 38.00 | 110.00 | 0.00 | z | 567.69 | d | 721.00 | g | 809.50 | 172.50 | i | 67.50 | 15.50 | g | 0.00 | z | 1592.69 | |||||
| 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 | 432.00 | 137.36 | b | 10.00 | 0.00 | 579.36 | ||||
| 2009 | 0.00 | c | 2.00 | 4.00 | 83.00 | 438.50 | 464.50 | 846.50 | 686.00 | 529.50 | 79.00 | 0.00 | z | 0.00 | z | 3133.00 | ||||||||||
| 2010 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 71.50 | 466.50 | 502.50 | j | 370.00 | m | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 538.00 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.89 | 1.18 | 19.80 | 86.93 | 257.90 | 484.36 | 724.02 | 643.46 | 384.67 | 113.76 | 6.38 | 1.16 | 2719.20 | |||||||||||||
| S.D. | 3.15 | 1.88 | 18.91 | 47.29 | 100.06 | 82.48 | 94.20 | 93.60 | 81.89 | 53.74 | 8.07 | 3.09 | 288.17 | |||||||||||||
| SKEW | 4.56 | 1.81 | 0.76 | 0.40 | 0.06 | 0.23 | 0.29 | -0.58 | -0.94 | 0.65 | 1.18 | 2.77 | -0.22 | |||||||||||||
| MAX | 16.50 | 7.50 | 60.50 | 194.00 | 454.31 | 655.50 | 915.00 | 809.50 | 529.50 | 238.50 | 29.50 | 12.00 | 3182.00 | |||||||||||||
| MIN | 0.00 | 0.00 | 0.00 | 6.00 | 71.50 | 351.50 | 551.50 | 434.50 | 173.79 | 24.00 | 0.00 | 0.00 | 2197.44 | |||||||||||||
| NO YRS | 28 | 31 | 30 | 28 | 30 | 30 | 24 | 29 | 30 | 28 | 28 | 28 | 15 | |||||||||||||