ALTA state,

Monthly Precipitation - Daily Extreme (inches)

(420072)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1905 9999.00 z 9999.00 z 1.50 r 1.20 b 1.40 0.37 a 0.50 0.41 a 0.87 0.37 0.50 0.72 1.50
1906 0.52 d 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.11 1.01 0.30 9999.00 z 1.80 x 1.80
1907 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1908 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1909 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1910 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1911 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1912 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1913 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1914 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1915 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1916 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1917 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1918 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1919 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1920 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1921 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1922 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1923 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1924 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1925 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1926 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1927 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1928 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1929 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1930 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1931 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1932 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1933 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1934 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1935 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1936 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1937 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1938 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1939 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1940 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1941 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1942 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1943 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1944 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.82 t 2.00 2.00
1945 1.25 1.28 1.70 9999.00 z 9999.00 z 9999.00 z 0.07 0.85 9999.00 z 9999.00 z 1.75 1.66 1.75
1946 2.27 1.10 1.11 1.53 1.10 0.14 0.88 0.44 0.23 4.32 1.99 1.38 4.32
1947 1.09 1.44 1.02 1.60 9999.00 z 0.60 z 0.07 1.15 1.60 1.46 1.59 0.95 1.60
1948 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 2.01 o 1.40 2.01
1949 3.10 0.89 1.32 0.20 h 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 2.63 2.28 3.10
1950 2.48 1.47 1.50 1.04 d 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 2.43 2.27 2.48
1951 1.64 1.85 1.00 0.45 9999.00 z 9999.00 z 0.62 1.47 0.35 9999.00 z 1.25 2.40 2.40
1952 1.70 1.40 2.20 2.60 1.20 9999.00 z 1.02 1.00 9999.00 z 9999.00 z 2.02 1.67 2.60
1953 3.16 1.30 1.61 1.01 d 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.56 1.74 1.33 3.16
1954 3.40 2.40 1.45 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.44 o 1.34 1.19 3.40
1955 3.11 2.31 2.68 1.64 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 5.59 3.55 5.59
1956 3.63 1.71 1.10 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 1.00 a 1.77 3.63
1957 1.54 A 1.12 A 1.40 2.12 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 1.94 1.30 2.12
1958 1.20 2.16 1.23 1.95 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 1.84 A 1.66 2.16
1959 1.56 2.18 1.25 1.28 c 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.85 1.44 2.18
1960 1.19 1.66 2.59 1.07 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 1.60 r 1.40 2.59
1961 0.07 0.87 1.25 1.75 A 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 1.71 q 2.05 A 1.71
1962 3.29 1.38 9999.00 z 1.87 A 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.46 3.29
1963 1.68 1.04 2.11 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.70 2.11
1964 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1965 2.67 1.06 1.03 0.94 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 2.67
1966 1.33 1.01 0.45 0.98 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.07 o 1.68 9999.00 z 1.68
1967 2.25 1.65 2.03 1.46 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.20 0.89 2.65 2.65
1968 1.78 1.80 1.39 1.85 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 2.79 2.79
1969 2.87 2.60 0.97 1.25 0.00 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 2.00 1.00 2.87
1970 2.12 1.25 1.17 9999.00 z 9999.00 z 0.11 q 0.88 0.33 1.25 0.93 c 9999.00 z 0.72 v 2.12
1971 1.44 1.92 0.90 0.77 1.71 1.04 0.00 1.02 1.72 1.31 1.35 1.81 1.92
1972 1.64 0.79 2.84 1.52 0.12 0.42 0.25 0.24 1.22 1.40 9999.00 z 2.00 2.84
1973 0.78 1.83 9999.00 z 9999.00 z 9999.00 z 0.71 0.81 0.41 0.61 0.67 1.37 9999.00 z 1.83
1974 9999.00 z 1.04 1.31 1.75 0.45 0.75 0.23 0.28 0.16 1.21 0.69 1.83 1.83
1975 2.13 1.21 A 2.74 1.63 2.10 A 1.33 0.57 0.13 0.32 a 0.84 t 2.24 2.00 2.74
1976 0.80 A 1.69 1.22 c 9999.00 z 0.35 d 0.75 A 0.35 0.35 1.10 0.90 0.00 e 0.00 d 1.69
1977 0.41 f 2.25 1.50 A 0.50 A 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 2.25
1978 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1979 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.26 0.72 1.22 0.06 2.65 1.36 0.76 2.65
1980 3.08 2.88 1.81 1.06 0.98 0.13 0.89 0.79 0.74 1.40 1.47 1.71 3.08
1981 1.80 1.31 2.46 1.48 1.21 0.78 0.32 0.23 0.87 1.93 1.31 3.18 3.18
1982 1.68 1.29 1.82 2.61 0.79 0.66 1.11 0.42 3.43 2.81 1.66 2.86 3.43
1983 1.20 1.51 2.12 2.03 2.01 0.76 1.28 1.49 0.79 0.86 1.84 2.20 2.20
1984 0.75 1.41 1.54 1.33 1.55 1.51 0.79 0.53 1.17 2.65 A 2.93 1.54 2.93
1985 0.63 1.37 1.26 1.55 1.43 1.62 0.90 0.05 1.48 1.59 2.23 1.95 2.23
1986 1.58 2.09 2.90 1.96 A 2.74 0.35 1.08 u 1.22 o 2.10 0.69 1.32 0.36 2.90
1987 1.32 1.22 0.46 a 0.15 0.69 0.46 1.87 0.96 0.34 0.69 0.83 1.18 a 1.87
1988 1.08 A 1.26 0.60 0.82 a 0.80 A 0.26 0.08 0.18 0.27 0.25 1.11 0.85 a 1.26
1989 1.87 0.72 1.00 0.81 0.23 0.66 0.82 0.40 1.10 0.83 3.50 0.50 3.50
1990 1.50 0.69 1.06 c 0.70 0.80 0.98 0.76 0.51 a 0.77 2.19 1.77 a 0.78 a 2.19
1991 1.75 0.97 1.15 0.79 0.45 A 0.33 0.42 1.73 1.14 1.50 1.68 d 0.66 b 1.75
1992 0.33 a 0.71 0.90 A 1.38 0.95 0.53 1.01 9999.00 z 1.01 1.27 2.10 b 1.17 a 2.10
1993 1.37 b 1.42 A 1.00 1.24 1.49 a 1.30 1.00 0.54 0.26 0.92 0.68 0.26 c 1.49
1994 1.10 1.83 1.24 9999.00 z 1.57 0.09 0.32 0.85 0.73 1.62 a 0.85 0.80 1.83
1995 2.05 1.81 1.86 1.09 a 1.62 0.84 1.21 0.30 0.79 1.15 a 0.84 A 1.65 a 2.05
1996 1.30 e 1.65 A 0.95 b 1.30 0.51 0.50 0.85 0.46 0.68 0.85 1.48 a 1.07 d 1.48
1997 1.45 b 0.83 0.58 b 0.78 b 0.92 0.71 0.51 0.50 0.86 1.05 0.68 0.62 d 1.45
1998 2.50 A 1.21 a 1.12 A 0.42 a 0.95 1.54 a 0.38 0.58 1.22 0.88 0.62 0.75 1.54
1999 1.72 1.07 0.77 0.63 a 1.30 a 1.02 a 0.61 0.98 0.50 0.73 0.43 1.11 1.72
2000 0.93 1.40 1.49 0.78 0.74 0.26 0.54 1.16 1.26 1.16 a 0.88 a 1.67 1.67
2001 0.72 0.56 d 0.73 c 0.92 c 0.55 0.51 0.56 1.41 0.54 9999.00 z 1.39 1.02 e 1.41
2002 0.49 c 0.95 d 1.46 b 0.46 a 0.69 0.22 0.53 a 0.12 1.26 1.65 a 0.78 f 0.44 h 1.65
2003 0.52 c 0.77 d 1.10 c 0.77 a 0.74 1.23 0.31 0.41 1.76 0.50 0.81 a 1.90 a 1.90
2004 0.46 1.10 A 0.92 d 1.07 0.85 a 0.82 0.61 0.30 0.63 1.29 a 1.11 b 9999.00 z 1.29
2005 1.37 A 0.76 b 1.06 e 0.85 c 0.79 0.53 b 0.18 0.57 0.61 A 1.40 c 0.57 a 1.04 1.40
2006 1.40 c 0.91 1.16 c 2.05 9999.00 z 0.69 0.69 0.82 9999.00 z 1.01 0.87 a 0.65 c 2.05
2007 0.36 a 1.26 a 9999.00 z 9999.00 z 0.41 1.34 0.80 0.61 0.90 1.12 b 1.03 1.46 1.46
2008 2.50 1.45 1.67 1.62 a 1.10 a 0.35 0.26 A 0.68 A 1.95 b 2.07 a 1.91 a 1.25 A 2.50
2009 1.63 A 1.63 b 1.81 c 1.98 c 0.66 b 2.54 A 0.15 0.50 1.46 A 1.02 e 0.54 2.94 2.94
2010 1.27 A 0.96 b 1.05 A 2.99 a 2.44 d 0.35 A 2.02 A 0.75 a 0.60 a 2.24 1.76 b 2.66 A 2.99
2011 1.28 1.88 b 0.00 a 1.62 b 1.85 b 2.50 c 0.87 f 2.30 b 0.57 e 1.10 b 1.27 c 0.36 b 2.50
2012 2.07 a 1.27 a 1.60 b 1.65 d 0.94 e 0.00 c 1.80 0.93 0.81 b 0.56 a 1.70 a 1.18 a 2.07
2013 0.68 b 1.10 b 1.14 b 0.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.00 z 1.14
Period of Record Statistics
MEAN 1.62 1.40 1.38 1.32 1.05 0.78 0.68 0.68 0.96 1.27 1.49 1.47 2.67
S.D. 0.84 0.50 0.60 0.59 0.61 0.58 0.46 0.47 0.61 0.78 0.87 0.77 0.85
SKEW 0.53 0.74 0.71 0.49 0.74 1.34 1.03 1.21 1.57 1.59 2.04 0.51 0.42
MAX 3.63 2.88 2.90 2.99 2.74 2.54 2.02 2.30 3.43 4.32 5.59 3.55 4.32
MIN 0.07 0.56 0.00 0.15 0.00 0.00 0.00 0.05 0.06 0.20 0.00 0.00 1.67
NO YRS 64 65 62 55 41 41 45 46 45 45 56 61 12