Precipitation annual maximum series (inches) Station ID: 39-9537 Station name: ZEONA 10 SSW State: SD Latitude (decimal degrees): 45.0669 Longitude (decimal degrees): -102.9956 Elevation (feet): 2730 Duration: 15 minutes 07/04/1977 0.40 06/29/1978 0.80 06/27/1979 0.60 08/09/1980 0.60 07/21/1981 0.60 07/24/1982 0.50 08/16/1984 0.70 05/10/1985 0.20 07/07/1987 0.30 06/29/1988 0.50 07/10/1989 0.60 06/16/1990 0.80 07/21/1991 0.90 07/07/1992 0.40 06/29/1993 0.50 10/06/1994 0.40 08/25/1995 0.50 07/31/1996 0.60 06/23/1997 0.40 06/11/1999 0.20 06/12/2001 0.30 Duration: 30 minutes 07/04/1977 0.70 06/29/1978 1.20 06/27/1979 0.80 07/02/1980 0.80 08/04/1981 1.00 07/24/1982 0.70 08/16/1984 1.10 05/28/1985 0.40 05/16/1987 0.40 06/29/1988 1.00 07/10/1989 1.20 06/16/1990 1.00 07/21/1991 1.20 08/04/1992 0.50 06/29/1993 1.00 10/06/1994 0.40 06/21/1995 0.60 07/31/1996 1.10 06/23/1997 0.60 06/06/1999 0.40 06/12/2001 0.40 Duration: 45 minutes 07/04/1977 0.70 06/29/1978 1.30 06/27/1979 0.80 07/02/1980 0.80 08/04/1981 1.10 07/24/1982 0.70 08/16/1984 1.50 05/28/1985 0.50 05/16/1987 0.40 06/29/1988 1.40 07/10/1989 1.40 06/16/1990 1.10 07/21/1991 1.20 08/04/1992 0.60 06/29/1993 1.10 10/06/1994 0.50 06/21/1995 0.80 07/31/1996 1.40 06/23/1997 0.60 05/21/1998 0.30 06/06/1999 0.50 06/12/2001 0.50 Duration: 1 hour 07/04/1977 0.64 06/29/1978 1.47 06/27/1979 0.73 07/02/1980 0.73 08/04/1981 1.10 07/24/1982 0.64 06/05/1984 1.47 05/28/1985 0.46 05/16/1987 0.46 06/29/1988 1.47 07/10/1989 1.47 06/16/1990 1.01 07/21/1991 1.10 07/06/1992 0.55 06/29/1993 1.10 10/06/1994 0.46 08/23/1995 0.92 07/31/1996 1.38 06/16/1997 0.55 10/17/1998 0.28 06/06/1999 0.55 06/12/2001 0.55 Duration: 2 hours 07/04/1977 0.77 06/29/1978 1.63 06/27/1979 0.77 06/15/1980 1.15 08/04/1981 1.35 07/24/1982 0.77 08/16/1984 1.54 05/10/1985 0.58 05/16/1987 0.58 06/29/1988 1.73 07/10/1989 1.54 06/16/1990 1.06 07/21/1991 1.15 07/07/1992 0.58 06/29/1993 1.15 10/06/1994 0.58 06/21/1995 1.15 07/31/1996 1.45 06/16/1997 0.58 10/17/1998 0.48 06/06/1999 0.87 06/12/2001 0.67 Duration: 3 hours 05/18/1977 0.80 06/29/1978 1.70 08/21/1979 1.00 06/15/1980 1.40 08/04/1981 1.40 03/29/1982 0.90 08/16/1984 1.70 05/26/1985 0.70 08/06/1987 0.80 06/29/1988 1.90 07/10/1989 1.60 06/16/1990 1.10 07/21/1991 1.20 06/15/1992 0.70 06/29/1993 1.20 10/06/1994 0.60 06/21/1995 1.30 07/31/1996 1.50 06/16/1997 0.60 10/17/1998 0.70 06/06/1999 0.90 06/12/2001 0.70 Duration: 6 hours 05/18/1977 0.81 06/29/1978 1.72 06/19/1979 1.30 06/15/1980 2.00 08/04/1981 1.41 05/19/1982 1.30 08/16/1984 1.72 05/26/1985 0.90 08/06/1987 1.10 06/29/1988 2.20 07/10/1989 1.62 06/16/1990 1.11 05/11/1991 1.40 07/06/1992 1.00 05/08/1993 1.21 10/06/1994 0.70 06/21/1995 1.70 07/31/1996 1.51 01/03/1997 0.70 10/16/1998 1.00 06/06/1999 1.10 06/12/2001 0.71 Duration: 12 hours 09/30/1977 1.10 06/29/1978 1.80 06/19/1979 1.50 06/15/1980 2.20 08/04/1981 1.43 05/19/1982 2.10 08/16/1984 1.74 05/26/1985 1.40 05/20/1987 1.60 06/29/1988 2.70 07/10/1989 1.70 06/16/1990 1.12 05/11/1991 1.50 07/06/1992 1.01 06/29/1993 2.10 07/06/1994 1.20 06/21/1995 1.80 07/31/1996 1.53 05/26/1997 1.00 10/16/1998 1.20 06/05/1999 1.60 06/12/2001 0.80 Duration: 1 day 08/12/1951 1.98 05/08/1952 1.15 07/26/1953 1.50 05/22/1954 2.47 09/20/1955 1.77 07/03/1956 1.40 08/08/1957 1.57 08/30/1958 1.00 06/30/1959 1.06 06/15/1960 1.95 09/12/1961 1.33 05/21/1962 1.55 06/15/1963 1.65 06/18/1965 1.10 07/21/1966 3.48 06/11/1967 1.33 06/23/1968 1.23 07/07/1969 2.16 04/18/1970 1.72 05/06/1975 1.84 06/14/1976 2.77 10/01/1977 1.43 06/29/1978 1.61 07/16/1979 1.34 08/04/1981 1.88 10/09/1982 2.32 08/06/1983 1.75 04/27/1984 2.00 03/11/1985 2.27 05/09/1986 1.63 05/21/1987 1.70 06/30/1988 3.30 07/11/1989 1.52 06/17/1990 1.07 05/12/1991 1.34 07/07/1992 1.12 07/18/1993 1.96 10/06/1994 1.16 06/22/1995 1.96 08/01/1996 2.40 04/05/1997 1.25 10/17/1998 1.34 06/06/1999 1.52 11/01/2000 1.40 06/13/2001 0.85 Duration: 2 days 08/12/1951 2.13 05/08/1952 1.25 06/14/1953 1.93 05/22/1954 3.74 09/20/1955 2.14 07/03/1956 1.51 08/17/1957 1.69 07/02/1958 1.40 06/29/1959 1.14 05/24/1960 2.16 09/12/1961 1.43 05/21/1962 2.47 06/15/1963 1.78 05/24/1965 1.84 07/21/1966 3.75 06/11/1967 1.53 06/23/1968 2.44 07/07/1969 3.45 04/18/1970 1.94 05/06/1975 2.44 06/14/1976 3.17 09/30/1977 1.63 07/20/1978 1.83 07/13/1979 1.83 08/04/1981 2.02 10/09/1982 2.98 08/05/1983 1.88 04/26/1984 3.36 03/11/1985 2.44 05/08/1986 2.33 08/07/1987 1.92 06/30/1988 3.65 04/27/1989 2.40 06/17/1990 1.15 05/11/1991 1.63 07/07/1992 1.35 06/29/1993 2.12 07/06/1994 1.35 06/21/1995 2.40 05/23/1996 2.58 05/26/1997 1.83 10/04/1998 1.83 06/06/1999 1.64 11/01/2000 2.05 06/13/2001 1.15 Duration: 3 days 08/12/1951 2.15 05/07/1952 1.28 06/14/1953 1.95 05/22/1954 3.78 09/20/1955 2.17 07/01/1956 1.98 07/01/1957 1.85 07/02/1958 1.41 06/29/1959 1.15 05/24/1960 2.18 09/12/1961 1.45 05/21/1962 2.49 06/20/1963 2.02 05/23/1965 1.91 07/21/1966 3.79 06/11/1967 2.26 06/23/1968 2.76 07/07/1969 3.48 04/17/1970 2.10 05/06/1975 2.64 06/13/1976 3.20 09/29/1977 1.65 07/20/1978 1.92 07/14/1979 1.91 08/04/1981 2.09 05/14/1982 3.39 08/05/1983 1.90 04/26/1984 3.81 03/11/1985 2.47 05/07/1986 2.68 08/06/1987 2.06 06/28/1988 4.52 04/27/1989 2.55 06/17/1990 1.42 05/11/1991 1.65 07/07/1992 1.47 06/29/1993 2.25 07/06/1994 1.47 06/21/1995 2.42 05/23/1996 2.85 05/26/1997 1.99 10/03/1998 1.89 06/06/1999 1.76 10/31/2000 2.16 06/13/2001 1.19 Duration: 4 days 08/12/1951 2.17 06/24/1952 1.37 06/14/1953 1.97 05/22/1954 3.82 09/20/1955 2.19 07/01/1956 2.00 07/01/1957 1.87 07/02/1958 1.43 06/27/1959 1.34 06/12/1960 2.44 09/12/1961 1.46 05/18/1962 2.84 06/20/1963 2.04 05/22/1965 2.25 07/21/1966 3.83 06/11/1967 2.28 06/21/1968 3.06 07/05/1969 3.52 04/15/1970 2.37 05/06/1975 2.82 06/14/1976 3.56 09/29/1977 1.67 07/20/1978 1.94 07/13/1979 2.70 08/02/1981 2.26 05/13/1982 3.60 08/19/1983 1.92 04/25/1984 3.96 05/26/1985 2.92 05/07/1986 2.78 08/06/1987 2.08 06/28/1988 4.68 04/26/1989 2.63 06/17/1990 1.43 05/12/1991 2.18 07/07/1992 1.48 06/29/1993 2.39 07/06/1994 1.48 05/06/1995 2.58 05/24/1996 3.45 05/26/1997 2.01 10/02/1998 2.01 06/03/1999 2.16 10/30/2000 2.48 07/24/2001 1.33 Duration: 7 days 08/09/1951 2.32 06/21/1952 2.11 06/14/1953 3.51 05/22/1954 5.01 09/20/1955 2.40 07/01/1956 2.53 08/17/1957 2.96 04/22/1958 1.75 06/24/1959 2.30 06/09/1960 2.64 09/07/1961 1.55 05/16/1962 4.41 06/15/1963 2.57 05/08/1965 2.66 07/21/1966 3.87 06/06/1967 2.90 06/21/1968 3.38 07/05/1969 3.55 04/12/1970 2.90 05/06/1975 3.10 06/12/1976 3.63 10/01/1977 1.96 06/25/1978 2.14 07/13/1979 2.73 07/30/1981 3.01 05/14/1982 5.13 08/16/1983 2.31 06/05/1984 4.49 05/26/1985 3.49 05/07/1986 2.81 05/17/1987 2.83 06/28/1988 4.73 07/11/1989 2.90 06/14/1990 1.53 05/11/1991 2.35 07/07/1992 2.49 06/28/1993 2.42 07/06/1994 1.82 05/08/1995 2.82 05/23/1996 4.69 05/22/1997 2.04 06/17/1998 2.65 06/06/1999 3.11 10/27/2000 2.81 07/21/2001 1.69 Duration: 10 days 08/09/1951 2.34 06/22/1952 2.23 06/14/1953 3.55 05/22/1954 5.31 09/20/1955 2.44 07/01/1956 2.56 08/17/1957 3.55 07/02/1958 2.14 06/24/1959 2.40 06/08/1960 2.80 09/12/1961 1.73 05/17/1962 5.30 06/15/1963 3.75 05/05/1965 3.25 07/13/1966 4.07 06/06/1967 3.65 06/21/1968 4.06 07/07/1969 3.87 04/11/1970 3.73 04/28/1975 4.40 06/14/1976 4.26 09/29/1977 2.37 06/29/1978 2.62 07/13/1979 2.76 08/01/1981 3.81 05/13/1982 6.06 07/29/1983 2.34 06/05/1984 5.74 05/26/1985 4.17 05/07/1986 3.00 08/03/1987 3.26 06/23/1988 5.12 07/11/1989 2.93 06/14/1990 1.59 05/11/1991 2.42 07/07/1992 2.66 07/18/1993 3.13 07/06/1994 1.87 05/01/1995 3.54 05/23/1996 5.30 05/19/1997 2.07 06/15/1998 3.05 06/02/1999 3.86 10/27/2000 2.84 06/04/2001 1.99 Duration: 20 days 10/03/1951 3.11 06/08/1952 3.01 06/02/1953 4.38 05/22/1954 7.96 09/20/1955 2.44 06/25/1956 3.25 08/08/1957 5.25 07/02/1958 2.55 06/26/1959 3.06 05/24/1960 2.90 09/07/1961 1.93 05/13/1962 7.48 06/03/1963 4.80 05/08/1965 5.04 07/13/1966 4.38 05/30/1967 4.65 06/15/1968 4.57 07/07/1969 5.91 04/11/1970 3.73 04/21/1975 5.33 06/14/1976 5.54 09/21/1977 3.14 06/22/1978 3.07 07/13/1979 3.58 07/21/1981 5.70 05/10/1982 6.99 08/05/1983 4.09 06/01/1984 7.39 05/23/1985 4.90 04/25/1986 4.59 05/14/1987 4.02 06/17/1988 5.41 04/26/1989 3.02 06/07/1990 1.70 05/12/1991 3.97 07/05/1992 3.50 06/29/1993 5.06 10/02/1994 2.69 04/29/1995 4.26 05/08/1996 6.63 06/15/1997 2.61 06/08/1998 4.64 06/02/1999 4.87 04/24/2000 3.22 05/29/2001 2.89 Duration: 30 days 05/28/1951 3.84 06/20/1952 4.06 05/22/1953 5.65 05/22/1954 9.27 08/27/1955 3.28 06/14/1956 3.66 07/28/1957 7.14 06/04/1958 3.53 06/16/1959 3.88 05/24/1960 4.99 08/21/1961 2.52 05/15/1962 7.89 05/26/1963 6.20 05/05/1965 6.53 06/22/1966 5.97 05/30/1967 5.46 06/04/1968 5.47 06/21/1969 6.98 04/12/1970 5.26 04/23/1975 6.00 06/14/1976 6.41 09/17/1977 3.76 06/29/1978 5.05 07/13/1979 3.83 07/12/1981 6.82 05/10/1982 7.78 07/29/1983 4.65 05/21/1984 8.38 05/26/1985 5.59 04/14/1986 5.98 05/02/1987 4.76 06/23/1988 5.50 06/17/1989 4.23 05/24/1990 3.02 05/03/1991 4.62 06/16/1992 4.40 06/28/1993 6.99 09/19/1994 2.86 04/15/1995 5.17 05/02/1996 8.92 05/26/1997 4.20 06/08/1998 4.91 06/03/1999 5.72 05/27/2000 3.90 06/04/2001 3.55 Duration: 45 days 05/08/1951 5.66 05/30/1952 5.18 05/09/1953 6.50 05/22/1954 10.24 08/27/1955 3.32 07/01/1956 5.31 07/21/1957 8.10 05/31/1958 4.81 05/19/1959 4.99 05/03/1960 5.15 08/09/1961 3.26 05/13/1962 9.44 05/11/1963 7.04 05/05/1965 8.23 07/13/1966 6.96 05/01/1967 6.48 06/15/1968 6.94 06/13/1969 8.66 04/11/1970 6.45 04/17/1975 6.68 06/13/1976 6.97 08/26/1977 5.13 06/22/1978 5.93 07/13/1979 5.25 06/27/1981 7.51 04/26/1982 8.01 07/29/1983 5.03 05/26/1984 8.68 05/11/1985 6.40 04/03/1986 7.70 07/30/1987 5.57 05/27/1988 5.93 06/02/1989 4.46 05/16/1990 3.14 04/09/1991 5.83 06/14/1992 5.32 06/17/1993 8.30 06/01/1994 3.72 05/09/1995 6.94 04/30/1996 9.51 06/15/1997 5.31 05/21/1998 6.32 05/09/1999 6.72 05/06/2000 5.15 05/29/2001 4.79 Duration: 60 days 05/08/1951 6.59 05/06/1952 6.55 04/24/1953 8.04 05/17/1954 10.64 07/23/1955 4.23 06/14/1956 6.09 07/01/1957 9.67 05/21/1958 5.34 05/19/1959 6.20 04/24/1960 5.31 07/27/1961 3.78 05/16/1962 11.30 06/02/1963 8.30 05/05/1965 10.90 06/22/1966 8.61 05/01/1967 7.38 06/04/1968 7.84 05/31/1969 9.72 04/15/1970 7.51 04/28/1975 8.80 05/15/1976 8.06 08/14/1977 5.57 06/17/1978 7.27 07/13/1979 5.60 06/12/1981 9.23 05/10/1982 8.81 06/28/1983 6.33 04/24/1984 12.58 04/24/1985 6.42 03/18/1986 8.30 07/08/1987 5.81 05/02/1988 7.33 03/02/1989 5.04 04/25/1990 4.25 04/08/1991 7.17 06/14/1992 6.28 06/02/1993 10.46 05/14/1994 3.97 04/29/1995 9.26 04/11/1996 10.52 05/22/1997 6.39 05/09/1998 6.76 04/20/1999 7.97 04/24/2000 6.60 05/29/2001 6.48