YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 93.07 | 99.42 | 95.94 | 86.33 | 71.45 | 56.20 | 50.43 | a | 78.98 | e | ||||||
1981 | 51.19 | 53.71 | 58.58 | 74.63 | 78.65 | 95.43 | 98.65 | 95.32 | 88.30 | 68.90 | 59.33 | 45.74 | 72.37 | |||||||||||||
1982 | 42.65 | 47.18 | 60.87 | 68.33 | 80.23 | 90.00 | 96.90 | 94.81 | 83.57 | 67.52 | 53.60 | 45.19 | 69.24 | |||||||||||||
1983 | 44.55 | 53.74 | a | 58.23 | 63.87 | 75.81 | 87.44 | e | 95.19 | 95.77 | 90.23 | 73.00 | 55.43 | 39.87 | 69.43 | |||||||||||
1984 | 34.52 | 45.34 | 57.19 | 64.13 | 84.39 | 87.80 | 97.03 | 93.39 | 87.63 | 65.70 | a | 56.70 | 43.55 | 68.11 | ||||||||||||
1985 | 40.90 | 45.86 | 59.97 | 71.77 | 81.74 | 94.73 | 99.13 | 98.26 | 81.30 | 71.06 | 55.24 | a | 45.03 | 70.42 | ||||||||||||
1986 | 47.52 | 57.04 | 67.00 | 69.63 | 79.32 | 94.80 | 95.16 | 96.45 | 80.60 | 67.94 | 56.17 | a | 45.32 | 71.41 | ||||||||||||
1987 | 41.13 | 49.96 | 56.06 | 74.07 | a | 80.97 | 94.57 | 96.23 | 93.87 | 88.00 | 75.97 | 54.30 | 40.81 | 70.49 | ||||||||||||
1988 | 32.55 | 44.24 | 58.06 | 69.33 | 79.71 | 94.43 | 100.65 | 96.06 | 84.13 | 79.84 | 57.17 | 43.35 | 69.96 | |||||||||||||
1989 | 34.00 | 43.82 | 65.10 | 76.90 | a | 82.45 | 90.93 | 101.23 | 94.13 | 88.60 | 75.26 | 59.87 | 46.61 | 71.57 | ||||||||||||
1990 | 42.55 | 52.25 | 65.00 | 75.30 | 80.55 | 96.70 | 98.35 | 96.42 | ----- | z | 73.10 | 55.50 | 38.27 | a | 70.36 | a | ||||||||||
1991 | 33.37 | d | 48.39 | 57.37 | a | 66.73 | 80.23 | 90.80 | 97.47 | a | 96.06 | 88.69 | a | 76.48 | 52.63 | 36.97 | 68.77 | |||||||||
1992 | 33.58 | 49.72 | 63.81 | 76.93 | 83.97 | 91.60 | 95.19 | 96.29 | 87.60 | 78.16 | 50.67 | 39.26 | 70.57 | |||||||||||||
1993 | 42.97 | b | 48.29 | 64.10 | 69.47 | 80.90 | 89.63 | 96.39 | 94.16 | 88.17 | 69.55 | 51.07 | b | 44.40 | a | 69.92 | ||||||||||
1994 | 46.81 | 48.82 | 67.03 | 71.30 | 83.58 | 98.07 | 102.45 | 99.81 | 89.87 | 71.16 | 53.60 | 44.74 | 73.10 | |||||||||||||
1995 | 46.77 | 61.32 | 62.77 | 68.47 | 73.77 | 87.03 | 96.58 | 98.94 | 89.70 | 74.00 | 63.62 | a | 52.71 | c | 72.97 | |||||||||||
1996 | 48.23 | 56.45 | 63.33 | a | 71.77 | 85.61 | 93.93 | 100.23 | 99.00 | a | 83.83 | 70.81 | 56.97 | 46.70 | a | 73.07 | ||||||||||
1997 | 45.21 | c | 49.71 | 65.74 | 66.41 | a | 83.35 | 93.23 | 96.71 | 94.50 | a | 84.77 | 72.39 | 56.31 | a | 42.07 | b | 70.87 | ||||||||
1998 | 48.93 | c | 49.89 | a | 62.19 | 66.77 | 81.81 | 89.07 | 101.84 | 99.39 | 89.37 | 71.39 | 57.43 | 43.79 | b | 71.82 | ||||||||||
1999 | 50.58 | 56.00 | 69.45 | 64.90 | 78.81 | 90.83 | 97.48 | 93.10 | 85.20 | 77.94 | 62.80 | 46.27 | a | 72.78 | ||||||||||||
2000 | 49.00 | 55.10 | 59.37 | a | 74.20 | 84.16 | 94.00 | 100.97 | 100.10 | b | 89.83 | 73.90 | 49.33 | 46.90 | 73.07 | |||||||||||
2001 | 44.55 | 51.32 | 62.55 | 72.33 | 85.45 | b | 96.30 | 99.40 | a | 96.39 | 93.70 | 77.27 | a | 62.93 | 42.07 | a | 73.69 | |||||||||
2002 | 44.16 | 50.32 | 61.89 | d | 78.72 | a | 84.45 | 99.00 | 104.23 | 98.90 | 85.38 | a | 72.07 | a | 55.79 | a | 48.30 | a | 73.60 | |||||||
2003 | 50.93 | a | 51.33 | a | 61.58 | 73.03 | 83.97 | 94.50 | 107.03 | 99.55 | 88.97 | 81.48 | 54.83 | 46.70 | a | 74.49 | ||||||||||
2004 | 37.48 | 47.07 | 70.68 | 71.07 | 82.23 | 92.80 | 97.65 | 95.35 | 85.90 | 72.29 | 54.93 | a | 43.57 | a | 70.92 | |||||||||||
2005 | 50.61 | 53.18 | 61.71 | 71.27 | 82.68 | 89.03 | 103.19 | 93.52 | 86.93 | 73.74 | 58.27 | 44.40 | a | 72.38 | ||||||||||||
2006 | 47.32 | 50.75 | 58.81 | 73.67 | 85.87 | 96.93 | 100.35 | 94.39 | 82.07 | a | 67.65 | 58.23 | 41.70 | a | 71.48 | |||||||||||
2007 | 41.39 | 55.04 | 64.68 | 69.97 | a | 81.97 | 95.80 | 102.48 | 97.58 | 88.47 | 72.06 | 62.70 | 40.77 | a | 72.74 | |||||||||||
2008 | 39.61 | 47.66 | 61.16 | 67.70 | 77.23 | a | 92.28 | a | 100.63 | a | 97.87 | 87.70 | 73.37 | a | 57.67 | 41.37 | a | 70.35 | ||||||||
2009 | 39.48 | 52.89 | 62.45 | 67.70 | 83.63 | a | 86.53 | 99.47 | a | 95.45 | 87.13 | 67.77 | 55.80 | 31.37 | a | 69.14 | ||||||||||
2010 | 32.87 | 38.43 | 56.60 | a | 69.10 | 75.13 | 92.60 | 98.45 | 93.00 | 89.80 | 72.84 | 54.20 | 47.60 | a | 68.38 | |||||||||||
2011 | 35.47 | a | 46.61 | 61.52 | 67.47 | 73.84 | 91.60 | 96.55 | 98.83 | a | 87.23 | 71.42 | 54.50 | 40.94 | 68.83 | |||||||||||
2012 | 45.61 | 50.45 | 65.26 | 74.20 | 84.35 | 97.30 | 97.52 | 97.23 | 88.00 | 73.39 | 59.27 | 42.07 | a | 72.89 | ||||||||||||
2013 | 27.58 | 45.14 | 61.74 | 67.27 | 80.52 | 96.80 | 100.13 | 92.97 | 84.53 | 66.41 | n | 54.07 | 31.07 | a | 67.44 | a | ||||||||||
2014 | 40.53 | a | 54.11 | 62.65 | 68.17 | 77.74 | 92.30 | 99.48 | 90.13 | 88.23 | 73.42 | 56.24 | a | 46.70 | a | 70.81 | ||||||||||
2015 | 42.97 | 56.82 | 66.77 | 70.54 | b | 75.84 | 94.50 | 94.35 | 95.83 | a | 90.47 | 74.97 | a | 54.24 | a | 40.37 | a | 71.47 | ||||||||
2016 | 40.11 | c | 49.44 | b | 64.32 | 68.41 | a | 77.87 | 98.73 | 99.48 | 93.06 | 86.87 | 75.45 | 60.45 | a | 43.04 | d | 71.44 | ||||||||
2017 | 42.45 | 57.62 | b | 68.23 | 70.07 | a | 79.39 | 98.40 | 99.77 | a | 94.56 | f | 86.48 | a | 72.07 | a | 63.47 | 43.43 | a | 71.03 | a | |||||
2018 | 44.16 | 51.79 | 61.39 | 73.07 | 83.42 | 96.77 | 102.23 | 98.42 | 91.63 | 65.71 | 52.63 | 40.71 | j | 74.66 | a | |||||||||||
2019 | 42.71 | j | 43.89 | 57.32 | 71.57 | 72.81 | 89.53 | 100.58 | 100.26 | 90.57 | 68.48 | 57.03 | 42.43 | a | 72.23 | a | ||||||||||
2020 | 35.42 | 48.48 | 62.23 | 72.13 | 86.22 | d | 93.07 | 99.03 | 102.77 | 92.08 | d | 78.94 | 60.20 | 39.00 | 72.46 | |||||||||||
2021 | 39.86 | b | ----- | z | 62.50 | u | 74.95 | j | 82.83 | g | 96.95 | j | 100.63 | a | 96.59 | d | 88.47 | 67.73 | e | 58.60 | j | 47.36 | f | 78.66 | g | |
2022 | 43.60 | a | 48.69 | b | 63.00 | j | 74.09 | g | 81.14 | b | 93.11 | b | 99.42 | 95.55 | 90.43 | 71.74 | 51.67 | 42.73 | a | 71.81 | b | |||||
2023 | 43.48 | b | 44.65 | b | 52.80 | f | 67.57 | b | 84.23 | e | 89.41 | c | 102.79 | c | 97.26 | d | 89.15 | d | 74.38 | g | 59.44 | l | 46.92 | g | 77.32 | d |
2024 | 46.72 | b | 53.88 | d | 61.59 | i | 70.20 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.30 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 42.17 | 50.38 | 62.37 | 70.49 | 80.95 | 93.15 | 99.27 | 96.34 | 87.58 | 72.60 | 56.50 | 43.11 | 71.29 | |||||||||||||
S.D. | 5.78 | 4.56 | 3.58 | 3.51 | 3.53 | 3.35 | 2.66 | 2.54 | 2.82 | 3.74 | 3.51 | 4.22 | 1.67 | |||||||||||||
SKEW | -0.47 | -0.04 | 0.23 | 0.26 | -0.62 | -0.15 | 0.43 | 0.12 | -0.49 | 0.24 | 0.33 | -0.71 | -0.15 | |||||||||||||
MAX | 51.19 | 61.32 | 70.68 | 78.72 | 86.22 | 99.00 | 107.03 | 102.77 | 93.70 | 81.48 | 63.62 | 52.71 | 74.49 | |||||||||||||
MIN | 27.58 | 38.43 | 56.06 | 63.87 | 72.81 | 86.53 | 94.35 | 90.13 | 80.60 | 65.70 | 49.33 | 31.07 | 68.11 | |||||||||||||
YRS | 43 | 43 | 40 | 41 | 42 | 43 | 44 | 43 | 43 | 42 | 42 | 41 | 35 |