Precipitation annual maximum series (inches) Station ID: 13-0241 Station name: ANKENY State: IA Latitude (decimal degrees): 41.7183 Longitude (decimal degrees): -93.5742 Elevation (feet): 940 Duration: 1 hour 08/13/1951 1.22 06/20/1952 1.80 05/24/1953 1.79 06/20/1954 2.70 07/10/1955 1.32 07/27/1956 1.00 08/27/1957 0.59 10/08/1958 1.40 04/27/1959 1.09 05/05/1960 1.03 07/28/1961 0.90 05/21/1962 0.94 08/28/1963 1.11 06/22/1964 1.10 07/02/1965 1.75 06/11/1966 1.90 06/24/1967 1.10 07/06/1968 1.00 05/10/1970 1.10 09/10/1972 1.00 07/03/1973 2.30 06/18/1974 1.70 06/14/1975 1.20 07/21/1976 0.70 08/15/1977 1.20 Duration: 2 hours 08/13/1951 1.28 06/20/1952 2.78 05/24/1953 2.14 06/20/1954 4.60 07/10/1955 1.92 07/27/1956 1.48 05/09/1957 0.80 07/02/1958 2.01 04/27/1959 1.68 08/05/1960 1.69 09/22/1961 1.00 05/07/1962 1.00 08/05/1963 1.32 06/14/1964 1.39 07/02/1965 1.83 06/11/1966 2.10 06/09/1967 1.30 07/06/1968 1.50 05/10/1970 1.80 08/06/1972 1.40 07/03/1973 2.80 06/08/1974 2.40 06/14/1975 1.30 06/27/1976 1.10 08/27/1977 1.80 Duration: 3 hours 09/09/1951 1.37 06/20/1952 2.90 05/24/1953 2.40 06/20/1954 5.00 07/10/1955 2.02 07/27/1956 2.32 05/09/1957 1.15 07/02/1958 2.70 04/27/1959 2.16 08/05/1960 1.73 09/22/1961 1.15 05/07/1962 1.02 08/05/1963 1.40 06/14/1964 1.60 07/02/1965 1.87 06/11/1966 2.20 06/09/1967 1.80 07/06/1968 1.70 05/10/1970 2.30 08/06/1972 1.60 07/03/1973 3.00 06/08/1974 2.60 06/14/1975 1.33 04/17/1976 1.12 08/27/1977 2.60 Duration: 6 hours 07/02/1951 1.74 06/20/1952 2.98 05/24/1953 2.42 06/20/1954 5.34 07/10/1955 2.04 07/27/1956 2.50 10/07/1957 1.24 07/01/1958 2.94 04/27/1959 2.30 08/28/1960 1.75 09/12/1961 1.64 08/05/1962 1.07 08/05/1963 2.57 06/14/1964 2.16 07/02/1965 1.89 06/11/1966 2.70 06/09/1967 2.30 07/06/1968 1.72 05/10/1970 2.50 08/06/1972 1.70 06/08/1974 3.10 06/14/1975 1.70 06/27/1976 2.00 08/27/1977 3.40 Duration: 12 hours 07/02/1951 2.73 06/26/1952 3.24 05/24/1953 2.45 06/20/1954 5.70 07/10/1955 2.06 07/27/1956 2.73 05/09/1957 1.56 07/01/1958 2.98 04/27/1959 2.51 08/28/1960 1.90 09/12/1961 2.47 05/28/1962 1.19 08/05/1963 3.16 06/14/1964 2.22 07/01/1965 1.91 06/11/1966 3.10 06/09/1967 2.32 07/06/1968 1.74 05/10/1970 2.60 08/06/1972 1.72 06/08/1974 3.13 06/09/1975 1.80 04/17/1976 2.60 08/27/1977 4.40 Duration: 1 day 07/03/1951 2.44 06/20/1952 3.46 05/24/1953 2.19 06/20/1954 5.27 07/10/1955 1.84 07/27/1956 2.45 08/27/1957 2.22 07/02/1958 2.69 04/27/1959 2.24 08/28/1960 2.13 09/12/1961 3.33 05/28/1962 1.26 08/05/1963 3.98 06/14/1964 2.39 07/02/1965 1.82 06/12/1966 2.95 06/07/1967 2.14 07/07/1968 1.88 07/19/1969 2.03 05/11/1970 2.65 06/30/1971 2.01 06/14/1972 2.05 06/09/1974 2.80 06/15/1975 1.61 06/28/1976 3.57 08/28/1977 4.11 09/20/1978 2.10 08/16/1980 2.80 05/23/1981 2.41 07/16/1982 2.85 06/28/1983 3.90 07/14/1984 3.64 08/22/1985 1.72 04/30/1986 4.50 08/25/1987 2.51 07/17/1988 1.71 05/24/1989 1.62 03/13/1990 2.52 08/08/1991 2.34 07/25/1992 2.95 07/09/1993 3.70 05/24/1994 2.00 03/26/1995 1.60 05/10/1996 1.96 07/24/1997 2.20 06/19/1998 2.40 08/12/1999 2.50 05/31/2000 2.33 04/09/2001 2.30 07/10/2002 2.02 04/30/2003 2.09 05/23/2004 2.11 05/13/2005 2.25 07/26/2006 2.70 09/07/2007 3.92 07/28/2008 3.93 04/27/2009 2.92 08/11/2010 3.66 Duration: 2 days 07/03/1951 2.63 06/20/1952 3.73 05/24/1953 2.36 06/20/1954 5.77 07/09/1955 2.42 07/27/1956 2.80 05/09/1957 2.49 07/02/1958 4.46 06/29/1959 2.87 05/05/1960 2.79 09/12/1961 3.91 05/28/1962 1.39 08/05/1963 4.71 06/14/1964 2.60 07/01/1965 1.96 06/11/1966 3.37 06/09/1967 2.40 04/23/1968 2.12 07/18/1969 2.19 05/11/1970 2.85 06/30/1971 2.16 06/13/1972 2.88 10/31/1974 3.02 06/15/1975 2.12 04/17/1976 3.85 08/27/1977 4.62 09/13/1978 2.88 08/16/1980 3.40 05/22/1981 2.76 07/15/1982 3.18 06/27/1983 5.90 07/14/1984 3.92 09/22/1985 1.85 04/29/1986 4.85 08/25/1987 3.89 07/16/1988 2.21 07/18/1989 1.74 06/16/1990 4.63 08/07/1991 2.52 07/25/1992 3.18 08/29/1993 4.05 05/24/1994 2.15 04/26/1995 2.14 05/09/1996 3.37 07/24/1997 2.37 06/18/1998 3.03 06/10/1999 2.74 05/30/2000 2.51 09/07/2001 3.01 07/10/2002 3.34 04/30/2003 3.75 05/22/2004 2.84 05/12/2005 3.25 07/25/2006 2.91 09/07/2007 4.22 07/28/2008 4.23 04/26/2009 4.52 08/10/2010 6.96 Duration: 3 days 08/13/1951 3.10 06/20/1952 3.83 05/22/1953 3.13 06/20/1954 5.90 07/08/1955 2.52 07/27/1956 2.83 05/09/1957 2.57 07/01/1958 4.72 06/28/1959 3.18 05/05/1960 2.89 09/11/1961 4.00 05/26/1962 2.26 08/05/1963 4.88 06/20/1964 2.74 07/02/1965 2.45 06/11/1966 3.46 06/07/1967 3.22 04/22/1968 2.14 07/17/1969 3.04 05/11/1970 3.24 10/31/1971 2.19 06/13/1972 3.21 10/30/1974 3.09 06/09/1975 2.23 04/17/1976 3.89 08/26/1977 5.24 09/18/1978 3.32 08/16/1980 3.43 05/22/1981 2.79 07/16/1982 5.24 06/26/1983 6.92 06/07/1984 4.14 09/21/1985 2.29 06/28/1986 4.90 08/24/1987 3.93 07/16/1988 2.25 07/18/1989 1.76 06/15/1990 4.82 08/06/1991 4.38 07/23/1992 3.42 07/09/1993 5.83 05/24/1994 2.22 05/08/1995 2.77 05/08/1996 3.80 07/24/1997 2.39 06/18/1998 3.06 06/10/1999 2.85 06/12/2000 2.75 09/07/2001 3.04 07/10/2002 3.64 04/29/2003 4.18 05/23/2004 3.75 05/11/2005 5.33 07/25/2006 2.94 09/07/2007 4.26 07/18/2008 4.27 04/25/2009 4.67 08/09/2010 9.86 Duration: 4 days 08/13/1951 3.70 06/24/1952 4.41 05/22/1953 3.16 06/20/1954 5.96 07/07/1955 2.55 07/27/1956 2.86 05/09/1957 3.09 07/01/1958 4.77 06/27/1959 3.53 05/05/1960 2.92 09/11/1961 4.04 05/26/1962 2.48 08/05/1963 4.93 06/11/1964 3.35 06/29/1965 3.17 06/09/1966 4.01 06/07/1967 4.10 04/20/1968 2.79 07/17/1969 3.07 05/11/1970 5.43 10/30/1971 3.07 09/10/1972 3.48 10/29/1974 3.21 06/15/1975 3.35 04/15/1976 4.09 08/28/1977 5.66 09/17/1978 3.53 08/14/1980 3.53 05/22/1981 2.82 07/15/1982 5.57 06/26/1983 7.75 06/07/1984 4.46 09/20/1985 2.43 04/27/1986 4.98 08/24/1987 3.97 07/16/1988 2.27 08/23/1989 2.47 06/16/1990 5.16 08/05/1991 4.42 07/22/1992 3.66 07/08/1993 6.02 05/24/1994 2.24 04/09/1995 2.80 05/08/1996 3.84 07/21/1997 3.12 06/18/1998 3.15 06/10/1999 2.88 06/11/2000 2.90 04/06/2001 3.07 07/10/2002 3.68 04/29/2003 4.22 05/22/2004 4.48 05/11/2005 5.38 03/31/2006 3.49 04/23/2007 4.52 07/18/2008 4.91 04/25/2009 4.73 08/09/2010 9.96 Duration: 7 days 08/13/1951 3.74 06/20/1952 5.59 05/20/1953 3.26 08/21/1954 8.56 07/04/1955 3.90 07/27/1956 3.81 05/09/1957 4.28 07/01/1958 4.82 06/27/1959 3.56 08/24/1960 3.49 07/28/1961 4.18 05/22/1962 2.66 07/31/1963 5.48 06/14/1964 3.81 06/29/1965 3.87 06/08/1966 4.90 06/06/1967 5.65 04/18/1968 3.78 07/13/1969 3.96 05/09/1970 5.48 10/27/1971 3.79 09/07/1972 3.92 05/13/1974 4.03 06/09/1975 4.15 04/15/1976 5.29 08/26/1977 6.56 09/14/1978 4.55 08/11/1980 4.28 05/17/1981 3.10 07/15/1982 6.11 06/27/1983 9.40 06/07/1984 6.15 09/23/1985 3.60 04/26/1986 5.23 08/07/1987 4.94 07/16/1988 2.54 08/23/1989 3.37 06/16/1990 6.42 08/05/1991 4.47 07/25/1992 4.94 07/05/1993 7.43 08/30/1994 2.78 05/08/1995 3.13 05/04/1996 4.13 07/21/1997 3.15 06/14/1998 4.56 08/12/1999 3.36 05/27/2000 3.15 04/06/2001 3.74 07/06/2002 4.48 04/29/2003 6.24 05/18/2004 4.90 05/11/2005 5.44 03/28/2006 3.75 04/23/2007 4.61 06/06/2008 6.45 04/25/2009 5.08 08/05/2010 10.60 Duration: 10 days 08/13/1951 4.56 06/20/1952 8.24 05/20/1953 3.29 08/17/1954 9.12 07/01/1955 3.98 07/27/1956 3.85 05/09/1957 4.51 07/02/1958 5.54 04/19/1959 3.91 04/28/1960 4.19 07/26/1961 4.88 05/21/1962 3.82 07/31/1963 5.68 06/13/1964 5.99 06/26/1965 4.39 06/05/1966 5.96 06/05/1967 7.25 04/18/1968 3.82 07/13/1969 4.00 05/05/1970 5.54 10/27/1971 3.83 06/13/1972 4.93 05/11/1974 4.76 06/09/1975 5.76 04/15/1976 7.40 08/26/1977 7.83 09/13/1978 6.41 08/09/1980 4.93 06/24/1981 3.86 07/09/1982 6.30 06/26/1983 10.42 06/07/1984 7.16 09/20/1985 4.55 06/27/1986 6.20 08/07/1987 5.38 07/09/1988 3.42 07/11/1989 3.65 06/13/1990 7.57 08/05/1991 4.71 07/22/1992 5.65 07/05/1993 8.34 06/05/1994 3.39 05/08/1995 3.90 05/08/1996 4.53 07/21/1997 3.22 06/14/1998 4.68 08/12/1999 4.41 05/27/2000 3.57 04/06/2001 3.84 07/05/2002 4.61 04/30/2003 8.01 05/18/2004 6.51 05/11/2005 5.97 03/27/2006 3.86 08/29/2007 5.74 06/03/2008 8.42 04/25/2009 5.13 08/03/2010 12.09 Duration: 20 days 08/02/1951 5.85 06/20/1952 11.49 05/22/1953 5.58 08/07/1954 10.48 06/24/1955 4.92 07/27/1956 4.66 04/26/1957 5.47 07/01/1958 7.43 04/27/1959 5.20 08/15/1960 5.64 07/18/1961 6.31 05/21/1962 5.70 04/16/1963 7.03 06/09/1964 7.12 08/21/1965 5.53 06/02/1966 6.91 06/05/1967 10.68 04/13/1968 4.42 07/04/1969 6.33 05/05/1970 6.46 10/16/1971 4.99 08/25/1972 5.66 04/29/1974 7.45 06/09/1975 7.79 04/15/1976 7.79 08/16/1977 10.87 09/13/1978 7.14 08/01/1980 5.59 06/15/1981 5.64 06/30/1982 9.70 06/14/1983 12.58 05/25/1984 10.06 09/20/1985 5.82 04/27/1986 9.49 08/07/1987 9.53 07/09/1988 3.71 05/18/1989 4.95 06/16/1990 9.38 04/12/1991 6.14 07/12/1992 7.80 06/30/1993 10.56 05/24/1994 5.52 04/08/1995 6.34 05/08/1996 7.82 10/09/1997 5.15 06/09/1998 7.48 08/07/1999 6.55 05/27/2000 6.47 03/29/2001 4.86 07/05/2002 4.67 04/20/2003 9.76 05/13/2004 7.97 05/11/2005 6.22 07/26/2006 5.74 08/21/2007 8.34 05/24/2008 11.08 08/09/2009 6.20 07/23/2010 15.24 Duration: 30 days 08/13/1951 6.69 06/20/1952 12.15 05/20/1953 5.77 05/23/1954 13.26 06/11/1955 5.12 07/07/1956 6.13 04/26/1957 6.15 07/01/1958 9.90 04/19/1959 7.34 08/05/1960 7.54 09/11/1961 7.90 05/08/1962 6.32 04/16/1963 8.36 06/09/1964 8.79 08/29/1965 7.94 05/17/1966 9.15 05/28/1967 12.62 06/25/1968 5.89 06/26/1969 8.11 04/16/1970 7.11 10/16/1971 5.20 07/12/1972 6.45 04/29/1974 9.90 05/28/1975 9.73 03/27/1976 9.34 08/06/1977 13.38 08/25/1978 8.45 08/04/1980 6.62 06/07/1981 5.91 06/28/1982 10.34 06/05/1983 12.72 05/18/1984 12.74 09/20/1985 7.00 04/26/1986 11.06 08/08/1987 9.89 07/09/1988 4.26 05/18/1989 5.91 06/13/1990 13.04 04/09/1991 8.40 07/02/1992 9.16 08/01/1993 12.71 05/15/1994 6.48 04/11/1995 8.49 05/09/1996 10.25 10/09/1997 5.15 06/08/1998 9.41 07/26/1999 7.65 05/27/2000 8.11 04/06/2001 6.83 06/12/2002 6.02 04/16/2003 10.76 05/09/2004 8.59 05/11/2005 7.86 07/21/2006 7.12 08/21/2007 9.56 05/30/2008 13.63 05/26/2009 7.76 07/13/2010 19.23 Duration: 45 days 07/03/1951 10.02 06/20/1952 13.13 04/24/1953 7.62 07/17/1954 16.62 05/28/1955 5.92 07/27/1956 8.63 05/09/1957 7.65 05/30/1958 10.71 04/17/1959 10.67 04/16/1960 8.66 09/01/1961 9.82 04/27/1962 8.00 06/26/1963 8.72 05/11/1964 9.90 08/16/1965 9.38 04/30/1966 11.57 05/11/1967 12.94 06/11/1968 8.12 06/11/1969 10.89 05/09/1970 9.03 05/18/1971 6.64 08/01/1972 9.80 04/27/1974 13.41 05/28/1975 10.49 03/12/1976 9.84 08/06/1977 16.33 08/21/1978 9.50 08/04/1980 7.81 05/22/1981 8.72 06/28/1982 13.70 05/21/1983 13.68 06/04/1984 14.17 09/20/1985 7.19 06/18/1986 13.41 07/12/1987 12.19 07/09/1988 5.73 04/27/1989 7.41 06/13/1990 16.94 04/12/1991 10.87 06/16/1992 10.54 06/30/1993 17.59 05/24/1994 8.23 04/06/1995 11.36 04/29/1996 12.10 09/13/1997 6.76 05/07/1998 12.94 05/11/1999 9.99 05/27/2000 11.01 03/31/2001 8.62 07/10/2002 8.33 04/25/2003 11.36 05/09/2004 11.57 04/11/2005 10.37 07/11/2006 9.18 04/23/2007 11.62 05/19/2008 16.09 04/25/2009 11.35 07/05/2010 21.36 Duration: 60 days 05/16/1951 11.64 05/09/1952 17.06 05/22/1953 9.14 07/17/1954 17.02 05/26/1955 6.22 07/07/1956 10.57 04/19/1957 8.93 05/31/1958 14.53 03/24/1959 11.73 06/30/1960 12.14 07/18/1961 12.39 04/20/1962 8.80 07/12/1963 10.55 04/26/1964 12.04 05/21/1965 9.89 05/07/1966 14.66 04/26/1967 13.36 06/11/1968 10.15 06/11/1969 12.31 05/09/1970 10.05 05/07/1971 8.49 06/13/1972 11.93 04/21/1974 17.09 04/27/1975 11.80 03/02/1976 11.03 07/29/1977 17.81 08/15/1978 10.03 07/16/1980 8.67 05/08/1981 9.37 06/12/1982 16.18 05/05/1983 15.84 05/18/1984 18.66 08/22/1985 8.88 06/18/1986 16.93 06/29/1987 16.10 07/09/1988 6.31 05/24/1989 9.64 06/06/1990 19.02 04/09/1991 14.80 06/16/1992 11.70 07/04/1993 23.55 04/25/1994 9.45 03/20/1995 13.92 04/29/1996 13.64 05/26/1997 7.74 05/20/1998 15.54 04/14/1999 11.61 05/08/2000 12.69 03/29/2001 10.77 07/05/2002 9.30 04/30/2003 13.15 05/14/2004 15.26 05/11/2005 14.59 07/25/2006 11.99 08/21/2007 15.11 05/30/2008 24.56 04/26/2009 14.27 06/13/2010 29.75