YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1979 | 0.25 | 0.40 | 0.59 | 1.32 | 0.24 | 1.28 | 2.79 | 0.24 | 0.03 | 1.36 | 0.40 | 0.11 | 2.79 | |||||||||||||
1980 | 0.30 | 0.20 | 0.21 | 0.14 | 0.86 | 0.79 | 0.61 | 0.83 | 0.60 | 0.86 | 0.04 | 0.01 | 0.86 | |||||||||||||
1981 | 0.15 | 1.10 | 1.00 | 0.14 | 0.88 | 1.37 | 0.66 | 0.47 | 0.23 | 0.65 | 0.37 | 0.30 | 1.37 | |||||||||||||
1982 | 0.50 | 0.30 | 1.95 | 0.17 | 0.36 | 0.39 | 0.67 | 0.73 | 0.66 | 1.80 | 0.62 | 0.33 | 1.95 | |||||||||||||
1983 | 0.08 | 0.04 | 0.71 | 0.23 | 0.56 | 0.58 | 1.20 | 1.86 | 0.47 | 0.34 | 0.26 | 0.13 | 1.86 | |||||||||||||
1984 | 0.18 | 0.49 | 0.48 | 0.68 | 0.29 | 1.18 | 0.34 | 2.35 | 0.43 | 1.47 | 0.01 | 0.28 | 2.35 | |||||||||||||
1985 | 0.05 | 0.04 | 0.80 | 0.20 | 0.88 | 1.03 | 0.66 | 0.86 | 1.09 | 0.92 | 0.35 | 0.25 | 1.09 | |||||||||||||
1986 | 0.10 | 0.50 | 0.44 | 2.11 | 1.16 | 1.39 | 1.10 | 1.37 | 1.11 | 0.09 | 0.08 | 0.01 | 2.11 | |||||||||||||
1987 | 0.06 | 0.20 | 0.69 | 0.26 | 0.85 | 0.26 | 1.00 | 0.44 | 0.70 | 0.18 | 0.59 | 0.16 | 1.00 | |||||||||||||
1988 | 0.40 | 0.09 | 0.25 | 0.29 | 1.58 | 0.53 | 1.03 | 1.34 | 2.44 | 0.27 | 0.46 | 0.70 | 2.44 | |||||||||||||
1989 | 0.75 | 0.05 | 0.90 | 0.33 | 0.88 | 0.75 | 3.20 | 0.95 | 1.19 | 0.22 | 0.40 | a | 0.03 | 3.20 | a | |||||||||||
1990 | 0.13 | 0.25 | 0.63 | 0.55 | 0.30 | 0.90 | 0.58 | 1.39 | 0.64 | 1.01 | 0.07 | 0.20 | 1.39 | |||||||||||||
1991 | 0.05 | 0.40 | 0.34 | 1.85 | 1.08 | 1.71 | 1.17 | 0.52 | 0.72 | 0.45 | 0.10 | 0.04 | 1.85 | |||||||||||||
1992 | 0.45 | a | 0.14 | 0.44 | 0.74 | 2.02 | 2.37 | 0.43 | 0.80 | 1.68 | 0.27 | 0.50 | 0.30 | 2.37 | a | |||||||||||
1993 | 0.50 | 0.13 | 0.51 | 0.93 | 1.00 | 1.26 | 0.90 | 0.74 | 0.22 | 0.06 | 0.66 | 0.55 | 1.26 | |||||||||||||
1994 | 0.55 | 0.30 | 0.42 | 0.94 | 0.48 | 0.67 | 1.71 | 0.71 | 0.71 | 0.74 | 0.40 | 0.20 | 1.71 | |||||||||||||
1995 | 0.40 | 0.19 | 0.80 | 0.98 | 0.82 | 0.45 | 1.80 | 0.64 | 0.89 | 1.00 | 0.20 | 0.20 | 1.80 | |||||||||||||
1996 | 0.70 | b | 0.35 | 0.20 | a | 0.31 | f | 1.40 | 0.77 | 1.45 | 0.07 | 0.78 | 1.34 | 0.60 | 0.50 | 1.45 | i | |||||||||
1997 | 1.00 | 0.60 | a | ----- | 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 | 0.48 | y | 0.75 | b | 0.16 | 0.53 | 0.26 | a | ----- | z | ||
2001 | 0.22 | 0.22 | 0.13 | 1.54 | 1.43 | 0.86 | 1.07 | 0.55 | 0.61 | 1.23 | 0.25 | 0.05 | 1.54 | |||||||||||||
2002 | 0.04 | 0.03 | a | 0.23 | 0.43 | 0.79 | 0.91 | 1.44 | 0.47 | 1.80 | 0.65 | 0.07 | 0.13 | 1.80 | a | |||||||||||
2003 | 0.14 | 0.03 | 0.08 | 0.90 | 1.01 | b | 2.41 | 0.64 | 0.85 | 0.46 | 0.65 | 0.24 | 0.53 | 2.41 | b | |||||||||||
2004 | 0.32 | 0.08 | 0.42 | 0.50 | 1.70 | 0.74 | 1.08 | 1.19 | 1.95 | 0.38 | i | 0.16 | 0.38 | 1.95 | i | |||||||||||
2005 | 0.55 | 0.20 | 0.03 | 0.57 | 0.91 | 3.19 | 2.44 | 1.25 | 1.26 | 1.50 | 1.27 | 0.41 | 3.19 | |||||||||||||
2006 | 0.02 | 0.16 | 0.94 | 0.66 | 1.03 | 0.53 | 0.45 | 1.23 | 1.28 | 0.75 | 0.07 | 0.78 | 1.28 | |||||||||||||
2007 | 0.04 | 0.35 | 0.62 | 0.99 | 1.69 | 2.44 | 1.17 | 0.81 | 0.49 | 0.56 | 0.02 | 0.62 | 2.44 | |||||||||||||
2008 | 0.02 | 1.10 | 0.50 | 0.72 | 0.39 | 1.41 | 0.54 | 2.50 | 1.69 | 1.58 | 0.64 | 0.30 | 2.50 | |||||||||||||
2009 | 0.32 | 0.28 | 1.47 | 0.28 | 0.95 | 1.35 | 2.52 | 0.35 | 1.14 | 1.82 | 0.11 | 0.39 | 2.52 | |||||||||||||
2010 | 0.33 | 0.35 | 0.39 | 0.68 | 0.42 | 0.84 | 1.00 | 0.77 | 2.27 | 0.88 | 0.06 | 0.52 | 2.27 | |||||||||||||
2011 | 0.38 | 0.25 | 0.66 | 0.44 | 0.74 | 2.34 | 1.31 | 3.10 | 0.40 | 0.37 | 0.11 | 0.12 | 3.10 | |||||||||||||
2012 | 0.20 | 0.44 | 0.19 | 1.83 | 0.86 | 0.81 | 0.22 | 1.34 | 0.10 | 0.98 | 0.07 | 0.19 | 1.83 | |||||||||||||
2013 | 0.85 | 0.65 | 0.15 | 0.63 | 0.84 | 1.36 | 2.43 | 0.47 | 1.45 | 2.28 | 0.14 | 0.24 | 2.43 | |||||||||||||
2014 | 0.10 | 0.05 | 0.17 | 0.78 | 0.73 | 1.03 | 1.03 | 0.65 | 0.30 | 0.11 | 0.21 | 0.12 | 1.03 | |||||||||||||
2015 | 0.11 | 0.11 | 0.12 | 0.35 | 2.42 | 0.71 | 0.62 | 0.43 | 0.34 | 0.61 | 0.30 | 0.26 | 2.42 | |||||||||||||
2016 | 0.06 | 0.08 | 0.40 | 1.10 | 0.45 | 0.90 | 1.75 | 1.27 | 0.90 | 1.35 | 0.41 | 0.68 | 1.75 | |||||||||||||
2017 | 0.16 | 0.21 | 0.06 | 1.25 | 0.60 | 0.93 | 0.50 | 1.58 | 1.68 | 0.59 | 0.10 | 0.06 | 1.68 | |||||||||||||
2018 | 0.05 | 0.23 | 0.46 | 0.12 | 0.48 | 1.38 | 1.10 | 0.79 | 0.87 | 0.63 | 0.28 | 0.37 | 1.38 | |||||||||||||
2019 | 0.17 | 0.23 | 0.76 | 0.53 | 1.44 | 1.06 | 2.45 | 1.54 | 1.65 | 1.12 | 0.04 | 0.40 | 2.45 | |||||||||||||
2020 | 0.17 | 0.02 | 0.08 | 1.00 | 0.99 | 1.73 | 2.61 | 0.62 | 0.64 | 0.28 | 0.13 | 0.30 | 2.61 | |||||||||||||
2021 | 0.20 | 0.05 | 0.35 | 1.55 | 0.36 | 0.34 | 0.46 | 0.95 | 1.52 | 1.26 | 0.42 | 0.53 | 1.55 | |||||||||||||
2022 | 0.17 | 0.17 | 0.36 | 0.80 | 0.76 | 0.35 | 0.63 | 1.05 | 0.35 | 0.22 | 0.65 | 0.60 | p | 1.05 | p | |||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.27 | 0.27 | 0.50 | 0.76 | 0.92 | 1.13 | 1.22 | 1.00 | 0.94 | 0.82 | 0.30 | 0.30 | 1.99 | |||||||||||||
S.D. | 0.24 | 0.25 | 0.39 | 0.51 | 0.49 | 0.66 | 0.77 | 0.63 | 0.60 | 0.55 | 0.26 | 0.20 | 0.63 | |||||||||||||
SKEW | 1.24 | 1.88 | 1.66 | 0.91 | 1.03 | 1.22 | 0.97 | 1.43 | 0.69 | 0.60 | 1.41 | 0.57 | 0.10 | |||||||||||||
MAX | 1.00 | 1.10 | 1.95 | 2.11 | 2.42 | 3.19 | 3.20 | 3.10 | 2.44 | 2.28 | 1.27 | 0.78 | 3.20 | |||||||||||||
MIN | 0.02 | 0.02 | 0.03 | 0.12 | 0.24 | 0.26 | 0.22 | 0.07 | 0.03 | 0.06 | 0.01 | 0.01 | 0.86 | |||||||||||||
YRS | 41 | 41 | 40 | 39 | 40 | 40 | 40 | 40 | 41 | 40 | 41 | 40 | 37 |