YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1978 | ----- | z | ----- | z | ----- | z | 30.95 | h | 35.41 | d | 45.07 | c | 48.52 | 49.03 | a | 41.07 | 33.30 | a | 24.83 | 6.70 | a | 35.49 | d | |||
1979 | 6.76 | b | 11.78 | a | 21.94 | 29.77 | 38.13 | 43.90 | 50.26 | 50.87 | 46.20 | 35.68 | 15.04 | b | 15.39 | 30.47 | ||||||||||
1980 | 15.32 | 21.79 | 20.41 | b | 28.85 | c | 35.16 | 45.38 | a | 52.97 | 51.77 | 44.07 | 32.32 | 21.53 | 21.55 | 32.59 | ||||||||||
1981 | 18.67 | a | 18.96 | 24.03 | 33.52 | a | 36.13 | 48.13 | 54.16 | 51.71 | 45.67 | 32.39 | 24.60 | 16.97 | 33.74 | |||||||||||
1982 | 10.43 | a | 15.54 | b | 24.82 | c | 26.66 | a | 37.29 | 43.83 | 52.26 | 53.81 | 46.03 | 28.00 | b | 20.63 | 14.13 | a | 31.12 | |||||||
1983 | 16.48 | b | 16.31 | b | 25.79 | b | 26.39 | b | 34.23 | a | 44.80 | 52.77 | 54.33 | a | 45.45 | a | 34.03 | 21.17 | 13.00 | c | 32.06 | |||||
1984 | 5.48 | 9.07 | b | 21.60 | a | 26.93 | 40.45 | 46.10 | 55.00 | 53.45 | 43.70 | 28.87 | a | 20.77 | 19.27 | a | 30.89 | |||||||||
1985 | 11.35 | 10.70 | a | 23.19 | 33.07 | 40.84 | 47.00 | 55.19 | 52.19 | 39.74 | c | 34.39 | 21.72 | a | 15.30 | a | 32.06 | |||||||||
1986 | 19.67 | a | 20.62 | b | 26.59 | b | 31.77 | 36.26 | 48.90 | 51.55 | 52.48 | b | 42.27 | 32.32 | 23.28 | a | 16.39 | 33.51 | ||||||||
1987 | 9.23 | i | 20.15 | b | 21.35 | 31.73 | 39.68 | 47.70 | 49.13 | 49.90 | 41.31 | a | 35.90 | 21.60 | 12.71 | 33.74 | a | |||||||||
1988 | 6.07 | a | 14.69 | 19.61 | 30.27 | 36.87 | 49.45 | a | 53.84 | 51.65 | 40.80 | 36.45 | 20.40 | 10.93 | a | 30.92 | ||||||||||
1989 | 4.87 | 12.07 | 26.23 | a | 32.07 | a | 37.55 | 45.10 | 55.29 | 50.97 | 44.23 | 32.68 | 22.53 | 11.60 | a | 31.27 | ||||||||||
1990 | 11.33 | a | 16.38 | b | 25.57 | a | 33.66 | a | 37.87 | 50.47 | 56.03 | 52.66 | b | 48.07 | a | 33.39 | 21.24 | a | 6.17 | a | 32.74 | |||||
1991 | 5.00 | c | 17.56 | a | 22.50 | c | 26.59 | a | 38.10 | 46.57 | 53.42 | 52.97 | 45.00 | a | 32.73 | a | 23.59 | a | 12.90 | a | 31.41 | |||||
1992 | 7.65 | 19.07 | 27.52 | 34.86 | a | 41.70 | a | 45.03 | 51.77 | 51.94 | 44.21 | a | 36.65 | 18.07 | 9.43 | a | 32.32 | |||||||||
1993 | 21.00 | a | 18.83 | e | 26.40 | a | 30.27 | d | 39.97 | a | 43.27 | 49.74 | 50.90 | 41.60 | 32.81 | 17.21 | b | 11.90 | 31.99 | |||||||
1994 | 16.48 | 16.59 | f | 27.10 | a | 33.04 | b | 38.00 | 51.73 | o | 54.97 | 56.74 | 45.80 | 34.00 | 20.14 | b | 15.77 | 34.20 | b | |||||||
1995 | 14.37 | a | 23.81 | a | 27.33 | a | 28.00 | a | 36.16 | 43.27 | 50.90 | 53.20 | a | 44.67 | 32.52 | b | 25.38 | a | 17.58 | 33.10 | ||||||
1996 | 14.10 | 20.46 | a | 23.83 | a | 28.63 | 40.52 | 49.50 | 57.13 | 54.61 | 43.00 | 32.07 | a | 24.79 | a | 13.70 | a | 33.53 | ||||||||
1997 | 12.23 | 13.93 | 25.27 | a | 28.60 | 40.71 | 47.60 | 52.97 | a | 52.65 | 48.60 | 32.68 | c | 22.62 | f | 11.97 | a | 33.38 | a | |||||||
1998 | 17.32 | 17.58 | b | 23.32 | 28.13 | 36.97 | b | 43.63 | 57.61 | 54.61 | 47.90 | a | 34.03 | 21.21 | b | 9.00 | m | 34.76 | a | |||||||
1999 | 3.43 | a | 7.96 | a | 24.97 | ----- | z | 37.87 | a | 43.03 | 55.13 | a | 52.12 | g | 40.15 | j | 32.07 | b | 22.86 | a | ----- | z | 28.42 | d | ||
2000 | ----- | z | ----- | z | 23.66 | b | ----- | z | ----- | z | 46.30 | t | 55.23 | a | 55.18 | t | 47.50 | b | 37.11 | c | 18.82 | b | 17.97 | 33.38 | f | |
2001 | 13.93 | a | 21.32 | 28.97 | 33.59 | a | 41.65 | 49.74 | c | 57.10 | a | 54.87 | a | 46.95 | i | 35.57 | c | 26.58 | d | 11.73 | a | 34.09 | a | |||
2002 | 11.86 | b | 13.61 | 22.40 | a | 33.03 | 38.40 | a | 51.13 | 58.48 | 54.10 | 47.00 | a | 34.00 | 23.20 | 17.06 | 33.69 | |||||||||
2003 | 23.00 | 19.82 | 25.90 | a | 31.50 | 42.19 | 48.53 | 60.13 | a | 58.00 | b | 46.15 | c | 40.80 | a | 25.90 | 19.81 | 36.81 | ||||||||
2004 | 12.07 | b | 16.38 | 31.43 | a | 33.80 | 40.87 | a | 48.47 | 52.07 | a | 52.77 | 45.67 | 37.48 | 25.90 | 18.45 | 34.61 | |||||||||
2005 | 26.03 | 25.67 | a | 25.90 | 32.08 | e | 41.07 | q | 45.66 | a | 56.68 | c | 53.09 | h | 45.13 | g | 36.35 | h | 26.52 | e | 19.75 | o | 34.08 | e | ||
2006 | 18.88 | e | 19.52 | e | 25.00 | g | 32.57 | i | 39.18 | t | 47.14 | w | 57.00 | k | 54.29 | q | 39.90 | i | 35.12 | g | 24.38 | d | 16.44 | o | 20.93 | i |
2007 | 12.43 | h | 23.96 | c | 27.53 | n | 33.68 | k | 41.82 | t | 48.00 | j | 58.75 | k | 57.73 | p | 49.35 | g | 36.25 | g | 28.00 | o | 13.27 | e | 18.61 | j |
2008 | 12.12 | g | 16.35 | f | 22.00 | p | 28.36 | p | 37.33 | j | 46.64 | p | 57.12 | o | 55.90 | j | 46.27 | h | 35.17 | b | 27.67 | 17.00 | a | 26.61 | i | |
2009 | 17.58 | 23.93 | a | 28.27 | a | 31.70 | 43.13 | a | 47.57 | 57.43 | c | 56.42 | e | 48.10 | a | 31.87 | a | 26.47 | 10.52 | 35.25 | ||||||
2010 | 13.94 | 15.19 | a | 23.84 | 32.67 | 35.30 | d | 48.70 | 56.06 | 53.71 | 48.00 | 38.20 | a | 22.73 | 25.50 | c | 34.49 | |||||||||
2011 | 11.55 | 16.68 | 28.35 | 29.93 | 36.23 | 47.10 | 56.06 | 56.48 | 48.00 | 34.94 | 25.03 | 14.87 | 33.77 | |||||||||||||
2012 | 18.10 | 18.72 | 28.06 | 34.93 | 42.16 | 53.33 | 59.06 | 58.65 | 49.10 | 36.42 | 28.77 | 17.48 | 37.07 | |||||||||||||
2013 | 8.10 | a | 16.93 | a | 28.13 | 30.93 | 40.74 | 53.33 | 60.03 | 56.00 | 49.43 | 32.71 | 27.07 | 11.84 | 34.60 | |||||||||||
2014 | 18.42 | 23.25 | 27.16 | 32.93 | 41.23 | 49.77 | 58.06 | 49.32 | 49.43 | 38.94 | 25.43 | 20.94 | 36.24 | |||||||||||||
2015 | 21.74 | 25.86 | 30.55 | 32.23 | 39.20 | a | 53.53 | 55.35 | 56.35 | 51.73 | 41.81 | 24.43 | 17.86 | x | 39.35 | a | ||||||||||
2016 | ----- | z | 19.69 | 28.16 | 33.23 | 39.58 | 54.47 | 57.42 | 54.16 | 46.30 | 40.10 | 29.37 | 19.06 | 38.32 | a | |||||||||||
2017 | 17.84 | 27.00 | 30.19 | 32.13 | 37.77 | 52.57 | 57.71 | 55.52 | 48.30 | 35.03 | 31.30 | 19.50 | a | 37.07 | ||||||||||||
2018 | 21.03 | 22.75 | 27.06 | 36.10 | a | 45.54 | c | 53.96 | c | 60.45 | 57.45 | 52.33 | 37.23 | 22.17 | a | 16.16 | 37.69 | |||||||||
2019 | 15.16 | 15.86 | 26.87 | 35.80 | 36.87 | 47.62 | a | 57.29 | 56.35 | 50.61 | b | 28.29 | 24.70 | 19.20 | a | 34.55 | ||||||||||
2020 | 14.33 | a | 18.86 | 30.40 | a | 31.33 | 43.45 | b | 49.93 | 57.90 | 59.29 | 47.90 | 36.29 | 27.60 | 13.26 | 35.88 | ||||||||||
2021 | 15.45 | 19.21 | 25.81 | 32.53 | 40.50 | a | 54.77 | 61.03 | 56.00 | a | 49.30 | 34.26 | 28.63 | 21.65 | 36.60 | |||||||||||
2022 | 17.10 | 16.89 | a | 25.77 | 31.73 | 39.26 | 51.40 | 60.67 | a | 57.26 | 52.07 | 35.87 | a | 20.43 | 19.23 | a | 35.64 | |||||||||
2023 | 17.10 | 14.36 | 20.45 | 30.70 | 43.73 | a | 47.17 | a | 59.35 | 56.39 | 48.79 | b | 37.14 | b | 27.52 | a | 22.21 | c | 35.41 | |||||||
2024 | 21.07 | a | 23.86 | a | 27.29 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.46 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.45 | 18.29 | 25.64 | 31.39 | 39.11 | 48.21 | 55.45 | 54.04 | 46.38 | 34.62 | 23.71 | 15.61 | 33.85 | |||||||||||||
S.D. | 5.47 | 4.48 | 2.91 | 2.52 | 2.66 | 3.37 | 3.28 | 2.59 | 3.16 | 3.00 | 3.43 | 4.24 | 2.09 | |||||||||||||
SKEW | -0.24 | -0.19 | -0.15 | -0.36 | 0.27 | 0.32 | -0.26 | 0.04 | -0.19 | 0.12 | -0.17 | -0.06 | 0.14 | |||||||||||||
MAX | 26.03 | 27.00 | 31.43 | 36.10 | 45.54 | 54.77 | 61.03 | 59.29 | 52.33 | 41.81 | 31.30 | 25.50 | 37.69 | |||||||||||||
MIN | 3.43 | 7.96 | 19.61 | 26.39 | 34.23 | 43.03 | 48.52 | 49.03 | 39.74 | 28.00 | 15.04 | 6.17 | 30.47 | |||||||||||||
YRS | 41 | 43 | 42 | 40 | 41 | 41 | 43 | 40 | 40 | 43 | 44 | 41 | 32 |