YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.42 | y | 59.84 | a | 49.00 | 26.67 | 3.85 | 34.84 | h | |||
2001 | 17.26 | 5.50 | 24.55 | 42.97 | 59.02 | 66.68 | 73.02 | 72.60 | 60.10 | 45.85 | 41.84 | a | 21.98 | 44.28 | ||||||||||||
2002 | 18.73 | 26.07 | 19.55 | 40.35 | 51.50 | 70.07 | 73.69 | 68.40 | 64.13 | 39.05 | 30.38 | 22.00 | 43.66 | |||||||||||||
2003 | 11.45 | 11.48 | 25.71 | 45.70 | 55.03 | a | 65.13 | 71.42 | 73.44 | 59.42 | 50.24 | 26.52 | 21.58 | 43.09 | ||||||||||||
2004 | 6.76 | 16.10 | 32.82 | 45.22 | 52.77 | 62.12 | 68.92 | 63.45 | 62.35 | 48.57 | i | 35.88 | 21.21 | 42.51 | a | |||||||||||
2005 | 8.03 | 21.00 | 28.50 | 48.53 | 53.87 | 68.48 | 71.97 | 68.58 | 63.73 | 49.15 | 34.02 | 17.90 | 44.48 | |||||||||||||
2006 | 24.87 | 13.68 | 27.87 | 49.17 | 57.66 | 67.98 | 76.16 | 70.93 | b | 57.47 | 43.20 | a | 32.22 | 25.16 | 45.53 | |||||||||||
2007 | 15.12 | b | 7.86 | 31.55 | 40.93 | 59.85 | 68.93 | 74.02 | 67.47 | 61.30 | 50.06 | 32.22 | 11.98 | 43.44 | ||||||||||||
2008 | 7.60 | a | 9.14 | 25.05 | 40.02 | 53.85 | 64.62 | 71.66 | 71.18 | 61.25 | 46.85 | 32.00 | 7.58 | 40.90 | ||||||||||||
2009 | 3.55 | 11.91 | 22.06 | 41.08 | 54.79 | 64.20 | 67.18 | 66.81 | 64.17 | 40.63 | 38.57 | 11.47 | 40.53 | |||||||||||||
2010 | 8.68 | 9.75 | 33.00 | 50.90 | 56.61 | 66.30 | 72.60 | 72.69 | 57.28 | 50.81 | 30.70 | 10.32 | 43.30 | |||||||||||||
2011 | 4.44 | 12.25 | 19.94 | 42.33 | 53.97 | 65.32 | 75.56 | 70.74 | 60.25 | 51.19 | 33.42 | 24.77 | 42.85 | |||||||||||||
2012 | 20.40 | 21.78 | 40.61 | 47.13 | 59.82 | 68.78 | 76.50 | 68.55 | 60.15 | 44.52 | 31.23 | 15.11 | 46.22 | |||||||||||||
2013 | 13.13 | 11.02 | 16.74 | 31.28 | 55.15 | 66.05 | 71.39 | 70.48 | 64.55 | 44.82 | 29.15 | 6.77 | 40.04 | |||||||||||||
2014 | 6.65 | 6.25 | 24.23 | 39.23 | 55.42 | 66.75 | 68.87 | 69.42 | 61.00 | 48.74 | 22.08 | 20.55 | 40.77 | |||||||||||||
2015 | 17.05 | 6.73 | 32.58 | 46.92 | 54.53 | 67.68 | 71.85 | 69.47 | 65.55 | 50.29 | 37.08 | 23.56 | 45.28 | |||||||||||||
2016 | 14.42 | 23.28 | 37.31 | 44.10 | 59.47 | 69.02 | 71.34 | 70.63 | 62.27 | 48.50 | 41.50 | 15.69 | 46.46 | |||||||||||||
2017 | 14.50 | 25.11 | 27.98 | 45.00 | 56.11 | 67.90 | 72.21 | 66.45 | 61.60 | 48.60 | 28.82 | 17.52 | 44.32 | |||||||||||||
2018 | 12.00 | 8.21 | 27.32 | 33.58 | 63.65 | 70.67 | 71.39 | 68.15 | 59.78 | 40.47 | 23.48 | 22.16 | 41.74 | |||||||||||||
2019 | 7.24 | -0.50 | 20.39 | 42.63 | 51.87 | 67.08 | 72.11 | 67.27 | 62.20 | 41.56 | 27.68 | 17.16 | 39.73 | |||||||||||||
2020 | 13.47 | 16.60 | 30.39 | 39.82 | 54.16 | 70.45 | 73.73 | 71.08 | 58.63 | 40.08 | 34.77 | 23.60 | 43.90 | |||||||||||||
2021 | 20.52 | 7.50 | 36.27 | 41.32 | 56.21 | 72.17 | 74.40 | 71.87 | 64.15 | 51.47 | 33.88 | 18.40 | 45.68 | |||||||||||||
2022 | 5.47 | 8.41 | 26.68 | 36.27 | 56.24 | 69.97 | 73.39 | 70.50 | 63.27 | 48.10 | 28.37 | 18.30 | p | 44.24 | a | |||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 12.33 | 12.69 | 27.78 | 42.48 | 55.98 | 67.56 | 72.43 | 69.55 | 61.50 | 46.51 | 31.85 | 17.29 | 43.31 | |||||||||||||
S.D. | 5.88 | 7.05 | 6.17 | 4.87 | 2.95 | 2.43 | 2.28 | 2.39 | 2.28 | 4.06 | 5.10 | 6.23 | 2.09 | |||||||||||||
SKEW | 0.32 | 0.46 | 0.20 | -0.44 | 0.78 | -0.23 | -0.29 | -0.57 | -0.08 | -0.55 | 0.17 | -0.67 | -0.27 | |||||||||||||
MAX | 24.87 | 26.07 | 40.61 | 50.90 | 63.65 | 72.17 | 76.50 | 73.44 | 65.55 | 51.47 | 41.84 | 25.16 | 46.46 | |||||||||||||
MIN | 3.55 | -0.50 | 16.74 | 31.28 | 51.50 | 62.12 | 67.18 | 63.45 | 57.28 | 39.05 | 22.08 | 3.85 | 39.73 | |||||||||||||
YRS | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 22 | 23 | 22 | 20 |