YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.00 | k | |
1951 | 0.00 | 0.20 | 0.25 | 0.13 | 1.32 | 0.23 | 1.96 | 3.30 | 0.00 | 1.02 | 0.05 | 0.33 | 8.79 | |||||||||||||
1952 | 0.09 | 0.17 | 0.14 | 0.77 | 0.19 | 0.14 | 2.77 | 1.25 | 0.84 | 0.00 | 0.48 | 0.03 | 6.87 | |||||||||||||
1953 | 0.12 | 0.20 | 0.23 | 0.81 | 0.69 | 0.37 | 3.64 | 0.96 | 0.86 | 0.71 | 0.16 | 0.10 | 8.85 | |||||||||||||
1954 | 0.08 | 0.00 | 0.00 | 0.10 | 1.53 | 0.00 | 0.18 | 1.46 | 0.24 | 5.19 | 0.00 | 0.05 | 8.83 | |||||||||||||
1955 | 0.25 | 0.00 | 0.02 | 0.33 | 1.39 | 0.34 | 4.56 | 1.56 | 4.81 | b | 2.02 | 0.00 | 0.00 | 15.28 | ||||||||||||
1956 | 0.02 | 1.30 | b | 0.00 | 0.00 | 0.15 | 0.00 | 0.53 | 0.57 | 0.00 | 0.54 | 0.00 | 0.00 | 3.11 | ||||||||||||
1957 | 0.09 | 0.35 | 0.97 | 0.02 | 0.30 | 0.38 | 0.36 | a | 1.43 | 0.00 | 3.02 | 0.61 | 0.00 | 7.53 | ||||||||||||
1958 | 1.43 | 0.79 | 2.27 | 0.91 | 0.37 | 0.03 | 0.51 | 1.83 | 3.36 | 1.29 | 0.39 | 0.02 | 13.20 | |||||||||||||
1959 | 0.00 | 0.00 | 0.00 | 0.67 | 1.75 | a | 1.95 | 4.79 | 2.18 | 0.24 | 0.24 | 0.00 | 0.73 | 12.55 | ||||||||||||
1960 | 0.97 | 0.15 | 0.02 | 0.00 | 0.93 | 1.23 | 5.42 | 0.64 | 0.57 | 4.28 | 0.00 | 1.37 | 15.58 | |||||||||||||
1961 | 0.43 | 0.05 | 0.76 | 0.11 | 0.17 | 0.64 | 0.79 | 1.40 | 1.25 | 0.55 | 2.02 | 0.28 | 8.45 | |||||||||||||
1962 | 0.52 | 0.44 | 0.12 | 0.12 | 0.18 | 1.10 | 4.13 | 0.76 | 3.49 | 0.82 | 0.35 | 0.41 | 12.44 | |||||||||||||
1963 | 0.17 | 0.57 | 0.00 | 0.10 | 1.82 | 1.11 | 0.03 | 2.13 | 1.65 | 0.00 | 0.49 | 0.02 | 8.09 | |||||||||||||
1964 | 0.54 | 0.87 | 0.03 | 0.00 | 0.63 | 0.67 | 0.22 | 0.15 | 2.40 | 0.00 | 0.28 | 0.09 | 5.88 | |||||||||||||
1965 | 0.13 | 0.34 | 0.08 | 0.95 | 0.47 | 0.85 | 2.82 | 1.64 | 1.08 | 0.00 | 0.31 | 0.38 | 9.05 | |||||||||||||
1966 | 0.32 | 0.00 | 0.45 | 2.41 | 1.25 | 0.76 | 0.46 | 3.61 | 0.82 | 0.00 | 0.00 | 0.00 | 10.08 | |||||||||||||
1967 | 0.00 | 0.08 | 0.08 | 0.00 | 0.29 | 5.88 | 1.23 | 3.16 | 1.15 | 0.00 | 0.15 | 1.48 | 13.50 | |||||||||||||
1968 | 2.15 | 1.18 | 1.63 | 0.01 | 0.61 | 0.43 | 5.15 | 1.95 | 0.00 | 0.30 | 0.61 | 0.23 | 14.25 | |||||||||||||
1969 | 0.00 | 0.34 | 0.61 | 0.61 | 0.32 | 0.35 | 1.70 | 0.40 | 3.52 | 3.54 | 0.03 | 2.11 | 13.53 | |||||||||||||
1970 | 0.00 | 0.16 | 0.29 | 0.00 | 0.49 | 2.64 | 1.69 | 0.52 | 0.78 | 0.52 | 0.05 | 0.23 | 7.37 | |||||||||||||
1971 | 0.02 | 0.21 | 0.01 | 0.29 | 0.18 | 0.07 | 3.29 | 4.63 | 1.95 | 0.94 | 0.74 | 0.36 | 12.69 | |||||||||||||
1972 | 0.15 | 0.00 | 0.00 | 0.00 | 0.88 | 1.37 | 1.20 | 6.27 | 3.63 | 1.18 | 0.55 | 0.73 | 15.96 | |||||||||||||
1973 | 1.46 | 1.49 | 1.35 | 0.29 | 0.66 | 0.73 | 2.52 | 0.03 | 0.95 | 0.39 | 0.07 | 0.00 | 9.94 | |||||||||||||
1974 | 0.21 | 0.10 | 0.45 | 0.17 | 0.48 | 0.19 | 0.20 | 5.66 | 5.68 | 4.19 | 0.15 | 0.69 | 18.17 | |||||||||||||
1975 | 0.14 | 1.54 | 0.32 | 0.65 | 0.24 | 1.84 | 3.54 | 0.23 | 1.60 | 0.12 | 0.03 | 0.10 | 10.35 | |||||||||||||
1976 | 0.08 | 0.39 | 0.17 | 0.69 | 1.14 | 1.06 | 4.12 | 0.39 | 2.18 | 0.83 | 1.08 | 0.00 | 12.13 | |||||||||||||
1977 | 0.13 | 0.43 | 0.62 | 0.95 | 0.69 | 0.04 | 0.60 | 7.19 | 0.95 | 0.68 | 0.46 | 0.00 | 12.74 | |||||||||||||
1978 | 0.67 | 0.63 | 0.00 | 0.05 | 1.62 | 5.96 | 2.04 | 2.52 | 3.79 | 1.94 | 1.39 | 0.47 | 21.08 | |||||||||||||
1979 | 0.70 | 0.45 | 0.09 | 0.32 | 1.97 | 1.62 | 1.26 | 1.47 | 0.53 | 0.38 | 0.00 | 0.62 | 9.41 | |||||||||||||
1980 | 1.29 | 0.48 | 0.00 | 0.96 | 0.53 | 0.05 | 0.33 | 3.02 | 4.69 | 0.02 | 1.32 | 0.14 | 12.83 | |||||||||||||
1981 | 0.29 | 0.21 | 0.34 | 1.04 | 3.81 | 2.19 | 4.51 | 2.81 | 2.19 | 1.34 | 0.50 | 0.20 | 19.43 | |||||||||||||
1982 | 0.80 | c | 0.21 | ----- | z | 0.00 | 0.97 | 1.64 | 1.28 | a | 1.27 | 1.42 | 1.78 | 1.26 | 1.24 | 11.87 | a | |||||||||
1983 | 0.43 | 0.16 | 0.10 | 0.63 | 0.04 | 0.44 | a | 0.32 | b | 1.28 | 1.62 | 5.61 | 1.74 | 0.51 | 12.88 | |||||||||||
1984 | 0.04 | 0.03 | 0.20 | 0.22 | 1.99 | d | 5.83 | a | 2.05 | 5.82 | e | 0.82 | 3.17 | 1.81 | a | 1.52 | 23.50 | |||||||||
1985 | 0.31 | b | 0.16 | 0.82 | 1.52 | 0.56 | a | 4.38 | b | 3.50 | b | 0.28 | 2.44 | 1.07 | c | 0.11 | c | 0.00 | c | 15.15 | ||||||
1986 | 0.54 | 0.44 | 0.08 | c | 0.15 | 2.11 | 3.48 | 2.05 | 6.12 | c | 2.76 | b | 2.68 | b | 1.87 | b | 1.44 | 23.72 | ||||||||
1987 | 0.46 | 1.39 | b | 0.37 | 0.18 | 2.32 | 3.09 | 0.24 | a | 3.23 | 1.03 | 0.30 | 0.58 | 0.58 | 13.77 | |||||||||||
1988 | 0.05 | c | 1.45 | 0.00 | 0.34 | 2.24 | 1.04 | 3.03 | e | 0.47 | 2.05 | l | 0.04 | 0.01 | c | 0.45 | b | 9.12 | a | |||||||
1989 | 0.32 | a | 0.27 | 0.21 | 0.00 | 0.39 | 3.02 | d | 1.68 | a | 3.95 | 0.79 | 0.11 | 0.00 | 0.05 | 10.79 | ||||||||||
1990 | 0.67 | 0.22 | 0.64 | 0.94 | 0.20 | 0.01 | 0.86 | 3.21 | 1.50 | 0.46 | 0.66 | 0.39 | b | 9.76 | ||||||||||||
1991 | 0.16 | 0.42 | 0.09 | 0.01 | 0.49 | 0.22 | 7.75 | a | 1.99 | 3.74 | 0.19 | 1.40 | 2.53 | a | 18.99 | |||||||||||
1992 | 0.83 | 0.19 | 0.19 | 0.77 | 7.71 | 0.79 | 1.48 | 0.88 | 0.66 | 0.31 | 0.20 | 0.46 | 14.47 | |||||||||||||
1993 | 0.62 | 0.06 | d | 0.38 | 0.49 | 0.56 | 0.76 | 5.58 | 3.41 | 1.86 | 0.29 | 0.30 | 0.13 | 14.44 | ||||||||||||
1994 | 0.02 | 0.00 | 0.54 | 0.25 | 2.36 | 0.00 | 0.43 | 1.10 | 0.91 | 1.64 | h | 0.40 | 0.00 | b | 6.01 | a | ||||||||||
1995 | 0.42 | e | 0.28 | b | 0.08 | 0.22 | 0.15 | 0.80 | 0.14 | 0.80 | 4.04 | b | 0.00 | 0.16 | 0.10 | a | 7.19 | |||||||||
1996 | 0.00 | 0.00 | 0.03 | 0.10 | 0.00 | 2.85 | 2.83 | 3.60 | 1.47 | c | 0.29 | 0.24 | b | 0.09 | 11.50 | |||||||||||
1997 | 0.90 | j | 1.96 | a | 0.00 | k | 3.06 | 1.13 | a | 1.86 | 1.05 | 1.26 | f | 2.02 | 1.30 | 1.08 | d | 2.49 | a | 15.95 | c | |||||
1998 | 0.06 | 0.31 | 0.76 | 0.00 | 0.00 | 0.22 | c | 1.09 | 1.33 | 0.52 | 5.59 | 0.31 | 0.60 | 10.79 | ||||||||||||
1999 | 1.08 | 0.02 | 1.72 | 0.60 | 1.95 | 3.25 | 4.61 | 1.34 | 0.78 | 0.49 | 0.00 | 0.68 | 16.52 | |||||||||||||
2000 | 0.00 | 0.00 | 0.56 | 0.30 | 0.04 | 2.92 | a | 2.11 | 0.10 | 0.09 | 2.94 | 2.08 | c | 0.49 | 11.63 | |||||||||||
2001 | 1.09 | 0.32 | 2.68 | a | 0.03 | 2.49 | 1.69 | 0.13 | 0.83 | 0.51 | 0.37 | 1.88 | d | 0.11 | 12.13 | |||||||||||
2002 | 0.37 | 0.11 | 1.67 | 0.06 | 0.00 | 3.37 | 2.53 | 1.04 | 2.06 | 2.79 | 0.05 | 1.22 | 15.27 | |||||||||||||
2003 | 0.10 | 0.64 | 0.21 | 0.00 | 1.32 | 1.58 | 1.16 | 1.41 | 0.27 | 0.47 | 0.32 | 0.06 | h | 7.48 | a | |||||||||||
2004 | 0.06 | 1.41 | 0.59 | 4.33 | 0.51 | 4.87 | 2.40 | 0.64 | 2.33 | 2.27 | 2.79 | 0.62 | 22.82 | |||||||||||||
2005 | 0.86 | 1.14 | 1.14 | 0.46 | 1.94 | ----- | z | 0.18 | a | 2.22 | 1.81 | 1.45 | 0.04 | 0.00 | 11.24 | a | ||||||||||
2006 | 0.00 | 0.17 | 0.04 | 0.74 | 0.29 | 0.93 | 1.11 | 4.38 | 3.45 | 1.67 | 0.00 | 0.68 | 13.46 | |||||||||||||
2007 | 1.05 | 0.34 | 1.96 | 0.86 | 4.28 | 2.69 | 5.95 | 2.94 | 2.37 | 0.03 | 0.75 | 0.63 | 23.85 | |||||||||||||
2008 | 0.04 | 0.10 | 0.09 | 0.02 | 2.30 | 0.71 | 2.24 | 3.91 | 0.97 | 1.28 | 0.00 | 0.33 | 11.99 | |||||||||||||
2009 | 0.01 | 0.04 | 0.20 | 0.00 | 0.89 | 3.62 | 3.72 | 0.68 | 2.03 | a | 1.36 | a | 0.34 | 0.84 | 13.73 | |||||||||||
2010 | 0.47 | 0.99 | 0.91 | 0.78 | 0.89 | 0.70 | 2.94 | c | 2.35 | 1.59 | 1.63 | 0.00 | 0.01 | a | 13.26 | |||||||||||
2011 | 0.00 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | a | 0.23 | h | 0.10 | b | 0.93 | a | 1.27 | 0.00 | e | 1.61 | 4.05 | a | |||||||
2012 | 0.05 | 0.46 | a | 0.06 | 0.13 | 1.31 | ----- | z | 2.60 | 1.10 | 1.15 | 1.27 | a | 0.12 | b | 0.05 | 8.30 | a | ||||||||
2013 | 0.42 | 0.17 | 0.00 | 0.00 | 0.13 | 0.99 | c | 3.04 | 1.01 | 6.66 | 0.32 | m | 0.59 | 0.54 | 13.55 | a | ||||||||||
2014 | 0.00 | 0.07 | 0.30 | 0.14 | 5.74 | 0.55 | 1.90 | 1.62 | 4.34 | a | 0.61 | 0.42 | 0.02 | 15.71 | ||||||||||||
2015 | 0.92 | 0.98 | 0.83 | 1.52 | 3.60 | 2.10 | 1.46 | l | 1.14 | 1.86 | c | 4.50 | 0.22 | 0.34 | 18.01 | a | ||||||||||
2016 | 0.15 | 0.17 | 0.00 | 1.16 | 1.52 | 1.41 | 0.10 | 1.57 | c | 1.48 | 0.30 | 0.02 | f | 0.47 | j | 7.86 | b | |||||||||
2017 | 1.40 | h | 0.24 | g | 0.20 | f | 0.85 | r | 0.82 | c | 1.59 | k | 1.75 | a | 3.63 | 3.13 | c | 2.29 | d | 0.03 | e | 0.00 | m | 11.65 | f | |
2018 | 0.20 | h | 0.48 | g | 0.03 | j | 0.01 | h | 0.68 | g | 1.19 | S | 0.71 | h | 1.08 | f | 4.12 | h | 2.79 | j | 0.05 | S | 0.82 | q | 0.00 | l |
2019 | 0.43 | r | 0.00 | c | 0.84 | f | 1.14 | e | 0.18 | S | 0.64 | c | 1.56 | e | 0.81 | d | 0.54 | f | 5.45 | a | 1.57 | S | 0.12 | l | 9.78 | e |
2020 | 0.60 | i | 0.74 | g | 1.84 | a | 0.02 | d | 0.10 | d | 0.28 | e | 0.14 | c | 0.53 | g | 0.20 | e | 0.70 | b | 0.03 | d | 0.00 | e | 3.31 | c |
2021 | 1.25 | 0.30 | 0.00 | 0.31 | a | 0.61 | 2.55 | d | 2.98 | a | 0.36 | 0.12 | e | 0.20 | 0.01 | 0.00 | 8.69 | |||||||||
2022 | 0.00 | c | 0.00 | g | 0.05 | f | 0.00 | 0.11 | c | 2.22 | b | 0.03 | 4.85 | b | 0.32 | 2.93 | c | ----- | z | ----- | z | 10.46 | d | |||
2023 | 0.20 | r | 0.46 | l | 0.00 | u | 0.00 | m | 4.01 | r | 5.90 | p | 1.23 | 0.51 | f | 2.76 | 0.41 | l | 0.43 | n | 0.57 | k | 3.99 | j | ||
2024 | 1.24 | 0.55 | p | 0.03 | w | 0.41 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.24 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.40 | 0.42 | 0.46 | 0.50 | 1.14 | 1.50 | 2.09 | 2.06 | 1.77 | 1.38 | 0.50 | 0.48 | 12.93 | |||||||||||||
S.D. | 0.47 | 0.47 | 0.62 | 0.73 | 1.35 | 1.51 | 1.72 | 1.69 | 1.46 | 1.53 | 0.64 | 0.60 | 4.56 | |||||||||||||
SKEW | 1.42 | 1.50 | 1.77 | 2.98 | 2.51 | 1.35 | 0.91 | 1.13 | 1.11 | 1.38 | 1.61 | 1.77 | 0.64 | |||||||||||||
MAX | 2.15 | 1.96 | 2.68 | 4.33 | 7.71 | 5.96 | 7.75 | 7.19 | 6.66 | 5.61 | 2.79 | 2.53 | 23.85 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 3.11 | |||||||||||||
YRS | 68 | 68 | 66 | 70 | 71 | 68 | 70 | 69 | 70 | 69 | 68 | 67 | 56 |