PLAIN, WASHINGTON

Monthly Precipitation - Daily Extreme (inches)

(456534)

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1948 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.51 0.37 0.92 0.51 0.84 1.90 1.90
1949 0.20 1.20 0.41 0.10 0.23 0.13 0.00 0.12 0.52 1.14 1.37 1.81 1.81
1950 1.20 1.20 0.41 0.45 0.15 0.26 0.00 0.15 0.35 0.30 g 1.61 q 0.45 1.61
1951 1.37 2.20 0.22 g 9999.00 z 9999.00 z 0.45 0.30 0.86 0.35 0.85 9999.00 z 9999.00 z 2.20
1952 9999.00 z 1.24 c 0.22 a 0.00 0.00 d 0.65 0.00 0.40 0.34 0.00 0.28 0.71 1.24
1953 1.83 1.08 0.20 0.61 0.55 0.51 0.00 0.33 0.16 0.31 0.96 2.02 2.02
1954 1.47 1.52 0.61 0.58 0.12 0.79 0.47 0.55 0.89 1.95 1.82 1.27 1.95
1955 0.26 2.26 0.90 0.71 0.17 0.16 0.28 0.00 0.18 1.37 1.84 2.06 2.26
1956 1.25 0.51 1.47 0.00 0.00 g 0.75 0.40 0.63 0.82 0.85 1.00 1.62 1.62
1957 0.56 1.50 A 1.70 A 0.87 m 0.37 0.33 0.05 0.30 0.39 0.98 A 0.44 A 3.04 A 0.87
1958 0.86 e 0.46 A 0.24 1.22 A 0.24 0.30 0.20 9999.00 z 9999.00 z 9999.00 z 1.64 A 1.97 A 0.86
1959 0.89 A 1.24 c 0.57 0.32 A 0.21 0.19 0.00 0.00 0.60 1.40 2.57 A 2.12 2.12
1960 1.54 A 1.23 A 0.73 A 9999.00 z 0.82 0.00 0.00 9999.00 z 0.21 0.78 A 1.86 0.80 b 1.86
1961 1.04 2.71 A 1.43 A 0.25 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 1.04
1962 9999.00 z 0.26 A 0.21 A 1.26 0.45 0.22 0.30 9999.00 z 0.29 9999.00 z 2.48 A 0.60 1.26
1963 0.40 1.90 1.12 0.67 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.47 i 0.35 j 1.90
1964 2.41 0.46 0.61 d 0.60 0.11 0.43 0.13 0.49 0.50 0.72 0.93 2.99 2.99
1965 2.24 0.87 0.24 0.78 0.32 0.60 0.36 0.22 0.29 0.23 0.33 0.91 n 2.24
1966 1.08 j 0.65 0.60 0.04 0.52 0.65 0.50 0.00 0.14 0.50 0.62 1.16 A 1.08
1967 2.24 0.89 0.64 0.73 0.45 0.39 0.00 0.00 0.09 3.36 A 9999.00 z 9999.00 z 2.24
1968 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.51 0.15 0.00 0.61 0.27 0.37 1.00 1.54 1.54
1969 0.91 0.40 o 0.20 0.45 0.14 0.14 0.04 0.00 0.54 0.39 0.43 0.90 0.91
1970 0.99 0.60 0.45 0.44 0.11 0.05 0.01 0.03 0.21 0.37 1.14 2.41 A 1.14
1971 1.89 0.56 0.73 0.45 0.20 0.17 0.11 0.31 0.48 0.65 0.90 1.52 1.89
1972 2.60 2.28 2.76 0.55 0.60 1.25 0.17 0.41 0.55 0.10 0.57 1.02 2.76
1973 0.94 0.21 0.48 0.12 0.31 0.12 0.23 0.02 0.46 0.95 1.26 1.22 1.26
1974 2.45 0.50 1.00 0.54 0.43 0.45 1.15 0.00 0.08 0.21 0.85 1.38 2.45
1975 1.33 1.15 0.37 0.33 0.98 0.33 0.15 1.10 0.00 0.70 1.66 2.00 2.00
1976 0.97 1.50 0.90 0.30 0.12 0.07 0.25 0.89 0.05 0.82 0.20 0.77 1.50
1977 0.35 0.71 0.71 0.09 0.38 0.21 0.07 0.25 0.50 0.25 1.40 2.10 2.10
1978 0.37 0.48 0.48 0.47 0.20 0.31 0.32 0.40 0.42 0.12 0.64 0.73 0.73
1979 0.75 1.46 0.60 0.20 0.15 0.32 0.33 0.22 0.48 0.34 0.43 1.83 1.83
1980 1.56 0.78 0.72 0.62 b 0.38 0.82 0.02 0.37 0.34 0.12 1.24 1.35 1.56
1981 0.33 1.00 0.22 0.35 0.51 0.48 0.14 0.19 0.41 0.52 0.89 1.73 1.73
1982 2.23 1.07 0.70 0.35 0.22 0.41 0.58 0.11 0.30 0.55 0.46 1.95 2.23
1983 1.33 0.54 0.52 0.67 0.37 0.20 0.44 0.81 0.87 0.21 1.01 0.57 1.33
1984 0.70 0.50 0.67 0.33 0.30 1.19 0.00 0.25 0.62 0.49 0.70 0.82 1.19
1985 0.35 0.82 0.48 0.47 0.17 0.51 0.43 0.08 0.28 0.94 0.65 0.59 0.94
1986 1.40 1.16 0.35 0.43 0.48 0.49 0.08 0.80 0.48 0.45 2.38 0.60 2.38
1987 0.56 1.62 0.70 0.30 0.38 0.33 0.18 0.02 0.04 0.03 0.24 2.37 2.37
1988 0.97 0.43 0.56 a 0.56 0.35 0.73 0.05 0.10 0.40 1.46 1.18 0.70 1.46
1989 0.58 0.49 0.47 1.22 1.07 0.23 0.23 0.38 0.22 1.37 0.85 1.23 1.37
1990 2.20 1.50 0.38 0.65 0.80 0.31 0.24 1.42 0.07 1.26 2.25 0.78 2.25
1991 0.57 2.20 0.58 0.60 0.72 0.63 1.08 0.22 0.12 0.75 0.59 0.86 2.20
1992 1.03 0.50 0.25 0.68 0.01 1.36 0.25 0.04 0.30 0.43 0.94 0.57 1.36
1993 0.78 0.18 0.50 0.25 0.62 0.59 0.28 0.14 0.11 0.32 0.25 1.27 1.27
1994 0.55 1.32 0.46 0.37 0.43 0.43 0.00 0.35 0.15 2.15 0.86 1.07 2.15
1995 0.86 1.15 0.50 0.37 0.65 0.56 0.68 0.86 0.26 1.00 2.25 0.94 2.25
1996 1.06 2.03 0.33 a 0.83 0.35 0.15 0.37 0.00 0.33 1.18 1.16 3.33 3.33
1997 0.84 A 0.69 0.85 0.70 0.33 0.49 0.13 0.33 0.35 1.53 0.47 0.70 1.53
1998 0.95 0.42 0.41 0.50 0.92 1.05 0.55 0.05 0.00 0.12 1.62 1.70 1.70
1999 1.35 a 1.13 0.36 0.04 a 0.22 0.27 0.03 0.40 0.34 0.61 1.36 0.98 1.36
2000 0.79 1.65 0.35 0.20 0.14 0.38 0.12 0.02 0.50 0.38 0.47 0.84 1.65
2001 0.43 0.60 0.38 0.40 0.22 0.50 0.06 2.00 0.35 1.10 1.15 1.09 2.00
2002 0.70 0.70 1.17 b 0.71 0.50 0.17 0.38 0.04 0.11 0.06 0.50 0.91 1.17
2003 1.75 0.88 1.62 0.88 0.06 a 0.05 0.00 0.03 0.00 1.21 2.17 a 0.69 a 2.17
2004 0.70 0.35 0.46 0.43 0.45 0.35 0.32 0.59 0.45 0.80 0.63 1.37 1.37
2005 1.01 0.45 a 0.72 0.23 0.88 0.30 0.25 0.05 0.29 1.25 0.73 0.72 1.25
2006 1.13 0.83 0.41 0.46 0.40 0.56 b 0.13 l 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 1.13
Period of Record Statistics
MEAN 1.11 1.03 0.65 0.48 0.38 0.43 0.24 0.35 0.34 0.76 1.07 1.35 1.81
S.D. 0.62 0.60 0.46 0.29 0.25 0.30 0.25 0.40 0.22 0.62 0.63 0.69 0.56
SKEW 0.77 0.83 2.41 0.70 0.85 1.25 1.67 1.96 0.69 1.68 0.79 0.93 0.48
MAX 2.60 2.71 2.76 1.26 1.07 1.36 1.15 2.00 0.92 3.36 2.57 3.33 3.33
MIN 0.20 0.18 0.20 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.20 0.45 0.73
NO YRS 54 56 54 54 54 56 56 53 55 53 53 53 41