Precipitation annual maximum series (inches) Station ID: 44-7201 Station name: RICHMOND WSO AIRPORT State: VA Latitude (decimal degrees): 37.5050 Longitude (decimal degrees): 77.3203 Elevation (feet): 164 Duration: 01d 2.32 1921 3.18 1922 7.24 1923 2.85 1924 1.99 1925 2.21 1926 3.87 1927 3.17 1928 4.55 1929 2.22 1930 4.74 1931 3.09 1932 3.19 1933 2.15 1934 4.91 1935 2.32 1936 2.94 1937 3.76 1938 2.29 1939 3.44 1940 2.13 1941 2.22 1942 1.68 1943 2.85 1944 4.35 1945 4.53 1946 3.25 1947 2.50 1948 3.53 1949 1.43 1950 1.86 1951 2.62 1952 3.14 1953 1.69 1954 8.79 1955 2.70 1956 3.95 1957 3.27 1958 4.58 1959 2.85 1960 4.76 1961 3.31 1962 3.41 1963 2.18 1964 2.65 1965 2.83 1966 2.22 1967 1.77 1968 4.90 1969 1.29 1970 3.18 1971 3.91 1972 1.91 1973 2.86 1974 3.01 1975 2.15 1976 4.35 1977 2.60 1978 2.71 1979 2.75 1980 3.05 1981 2.71 1982 2.96 1983 2.20 1984 5.58 1985 3.00 1986 2.76 1987 3.70 1988 2.03 1989 3.72 1990 2.98 1991 3.14 1992 1.99 1993 2.68 1994 1.88 1995 2.94 1996 2.04 1997 2.26 1998 4.53 1999 2.14 2000 Duration: 01h 08/08/1948 1.15 07/16/1949 2.15 09/14/1950 0.69 08/12/1951 1.78 06/29/1952 1.77 09/05/1953 1.81 10/01/1954 1.18 07/09/1955 2.12 07/20/1956 1.52 05/18/1957 0.99 08/03/1958 1.49 07/20/1959 2.02 08/10/1960 2.57 07/08/1961 1.23 05/24/1962 0.83 08/21/1963 1.07 08/30/1964 1.70 07/25/1965 1.96 09/21/1966 0.81 06/25/1967 0.86 09/06/1968 0.99 07/22/1969 2.82 07/04/1970 1.18 07/11/1971 0.94 08/02/1972 1.84 08/20/1973 0.92 08/07/1974 1.09 07/11/1975 1.88 05/07/1976 0.81 08/17/1977 1.62 06/03/1978 1.35 08/02/1979 1.15 10/19/1980 2.03 05/11/1981 1.23 07/12/1982 1.70 04/15/1983 1.51 08/03/1984 1.82 08/18/1985 1.43 07/23/1986 1.97 06/03/1987 1.05 07/23/1988 1.32 08/02/1989 1.40 07/11/1990 1.19 06/22/1991 1.22 05/18/1992 1.45 08/06/1993 0.80 07/26/1994 1.43 03/08/1995 1.02 09/11/1996 1.26 07/22/1997 0.89 03/09/1998 1.07 09/08/1999 1.16 06/28/2000 1.67 Duration: 02d 2.74 1921 3.18 1922 7.60 1923 5.04 1924 2.27 1925 2.65 1926 4.40 1927 4.43 1928 4.81 1929 2.83 1930 5.72 1931 3.60 1932 3.30 1933 2.82 1934 6.88 1935 2.40 1936 3.75 1937 3.87 1938 2.60 1939 5.29 1940 2.13 1941 2.47 1942 2.35 1943 2.89 1944 7.11 1945 4.61 1946 5.08 1947 4.10 1948 4.25 1949 1.78 1950 1.88 1951 4.41 1952 3.16 1953 2.30 1954 9.25 1955 4.10 1956 4.22 1957 3.95 1958 5.22 1959 3.12 1960 6.72 1961 3.74 1962 4.87 1963 4.06 1964 2.65 1965 3.61 1966 2.58 1967 2.28 1968 5.83 1969 1.40 1970 3.31 1971 4.48 1972 2.23 1973 3.26 1974 3.54 1975 2.37 1976 4.38 1977 3.14 1978 4.00 1979 3.45 1980 3.31 1981 3.22 1982 3.16 1983 2.60 1984 5.73 1985 3.20 1986 3.43 1987 4.73 1988 2.47 1989 4.22 1990 3.19 1991 3.69 1992 2.37 1993 2.83 1994 2.02 1995 3.96 1996 2.36 1997 2.66 1998 6.54 1999 2.87 2000 Duration: 02h 08/08/1948 1.15 07/16/1949 2.90 09/14/1950 0.96 08/12/1951 1.84 06/29/1952 1.99 09/05/1953 2.44 10/01/1954 1.29 07/08/1955 2.85 07/20/1956 1.74 10/06/1957 1.23 08/03/1958 2.41 07/01/1959 2.79 08/10/1960 2.85 10/20/1961 1.75 01/06/1962 1.02 08/21/1963 2.09 08/30/1964 2.13 07/25/1965 2.59 09/21/1966 1.31 07/20/1967 1.49 07/19/1968 1.11 07/22/1969 3.54 07/04/1970 1.18 07/11/1971 1.01 06/18/1972 2.71 08/20/1973 1.64 08/07/1974 1.95 07/11/1975 2.15 10/02/1976 1.05 08/17/1977 1.81 07/24/1978 1.60 08/11/1979 1.24 10/18/1980 2.70 05/11/1981 1.98 07/12/1982 2.50 03/21/1983 1.84 08/03/1984 1.82 08/18/1985 2.81 07/23/1986 3.00 06/26/1987 1.43 07/23/1988 1.57 08/02/1989 1.46 07/19/1990 1.90 06/22/1991 1.47 05/18/1992 1.52 08/06/1993 1.16 11/21/1994 1.80 09/01/1995 1.67 06/24/1996 2.01 07/22/1997 1.33 03/09/1998 1.37 06/29/1999 1.61 06/28/2000 1.92 Duration: 03h 08/08/1948 1.15 07/16/1949 3.45 07/21/1950 1.13 08/12/1951 1.86 06/29/1952 2.01 09/05/1953 2.63 10/01/1954 1.46 07/08/1955 3.43 07/05/1956 1.92 10/06/1957 1.96 08/03/1958 2.82 07/01/1959 3.96 08/10/1960 2.85 10/20/1961 2.22 06/12/1962 1.43 08/21/1963 2.19 08/30/1964 2.16 07/25/1965 2.65 09/21/1966 1.63 07/20/1967 2.19 07/19/1968 1.12 07/22/1969 4.42 07/04/1970 1.21 05/16/1971 1.20 06/18/1972 2.86 08/20/1973 1.75 08/07/1974 2.80 07/11/1975 2.43 10/02/1976 1.21 08/17/1977 3.03 08/06/1978 1.91 09/22/1979 1.69 10/18/1980 2.95 05/11/1981 2.23 07/12/1982 2.65 03/21/1983 2.07 08/03/1984 1.82 08/18/1985 3.49 07/23/1986 3.00 04/24/1987 1.48 07/23/1988 2.79 05/05/1989 1.49 07/19/1990 1.91 06/22/1991 1.77 05/18/1992 1.52 08/06/1993 1.66 11/21/1994 2.13 09/01/1995 1.73 06/24/1996 2.09 07/22/1997 1.73 03/09/1998 1.66 06/29/1999 2.32 06/28/2000 2.01 Duration: 04d 2.75 1921 3.21 1922 9.17 1923 5.06 1924 2.33 1925 3.45 1926 4.44 1927 5.34 1928 4.81 1929 2.83 1930 6.32 1931 3.77 1932 3.93 1933 3.16 1934 7.50 1935 2.45 1936 5.63 1937 5.67 1938 3.17 1939 7.63 1940 3.06 1941 3.80 1942 2.71 1943 3.13 1944 9.36 1945 5.21 1946 5.64 1947 4.98 1948 4.68 1949 1.92 1950 2.90 1951 4.51 1952 3.16 1953 2.34 1954 9.46 1955 4.69 1956 4.22 1957 3.96 1958 5.24 1959 4.64 1960 6.72 1961 3.75 1962 4.88 1963 4.06 1964 3.19 1965 3.76 1966 3.47 1967 2.93 1968 8.16 1969 2.02 1970 4.86 1971 6.82 1972 2.62 1973 4.31 1974 6.47 1975 2.52 1976 4.38 1977 3.35 1978 4.49 1979 3.45 1980 3.32 1981 5.10 1982 3.41 1983 4.40 1984 6.88 1985 4.43 1986 3.70 1987 4.88 1988 3.24 1989 4.98 1990 3.19 1991 3.73 1992 2.50 1993 3.47 1994 2.02 1995 4.06 1996 3.59 1997 3.47 1998 6.54 1999 3.50 2000 Duration: 06h 08/04/1948 1.31 07/16/1949 3.53 07/21/1950 1.32 08/12/1951 1.86 06/29/1952 2.02 09/05/1953 2.92 08/18/1954 1.63 08/12/1955 4.70 07/05/1956 2.69 10/06/1957 3.05 08/03/1958 3.50 07/01/1959 4.56 08/10/1960 2.85 10/20/1961 3.16 06/12/1962 2.05 06/03/1963 2.58 08/30/1964 2.18 07/25/1965 2.65 09/20/1966 1.72 07/20/1967 2.22 01/13/1968 1.17 07/22/1969 5.46 07/04/1970 1.23 05/15/1971 1.90 06/18/1972 3.84 08/20/1973 1.81 08/06/1974 3.21 07/11/1975 3.01 09/15/1976 1.59 08/17/1977 3.17 08/06/1978 1.98 09/21/1979 2.50 10/18/1980 3.38 05/11/1981 3.05 07/12/1982 2.65 06/20/1983 2.56 08/03/1984 1.82 08/18/1985 3.84 07/23/1986 3.00 04/16/1987 2.02 07/23/1988 2.86 06/07/1989 1.56 08/09/1990 2.00 06/22/1991 1.77 03/07/1992 1.79 08/06/1993 1.81 11/21/1994 2.31 09/01/1995 1.75 06/24/1996 2.12 07/22/1997 2.03 03/09/1998 1.80 06/29/1999 2.46 06/28/2000 2.05 Duration: 07d 3.78 1921 4.13 1922 9.48 1923 5.06 1924 2.44 1925 4.55 1926 4.86 1927 6.38 1928 4.81 1929 2.85 1930 6.46 1931 3.77 1932 6.23 1933 3.77 1934 7.90 1935 3.60 1936 5.70 1937 6.84 1938 3.69 1939 7.66 1940 3.06 1941 4.16 1942 3.27 1943 4.10 1944 10.47 1945 5.22 1946 5.64 1947 5.43 1948 5.62 1949 2.85 1950 3.65 1951 5.36 1952 3.16 1953 3.48 1954 13.33 1955 5.03 1956 5.52 1957 4.45 1958 5.65 1959 5.36 1960 6.72 1961 4.20 1962 6.04 1963 5.86 1964 3.68 1965 3.76 1966 4.80 1967 3.25 1968 8.17 1969 2.42 1970 5.02 1971 7.29 1972 3.26 1973 4.76 1974 7.83 1975 3.04 1976 4.68 1977 4.72 1978 4.83 1979 4.34 1980 4.10 1981 6.53 1982 3.45 1983 5.18 1984 7.58 1985 5.50 1986 3.95 1987 5.49 1988 3.84 1989 5.49 1990 5.07 1991 4.98 1992 3.09 1993 3.96 1994 2.28 1995 5.23 1996 3.59 1997 4.52 1998 7.49 1999 3.70 2000 Duration: 10d 3.78 1921 4.62 1922 10.45 1923 6.11 1924 2.65 1925 4.78 1926 5.44 1927 6.72 1928 4.94 1929 3.75 1930 8.30 1931 4.52 1932 6.65 1933 3.94 1934 7.90 1935 3.97 1936 6.75 1937 7.81 1938 3.72 1939 7.81 1940 3.35 1941 4.30 1942 3.70 1943 4.87 1944 10.81 1945 5.54 1946 5.66 1947 6.15 1948 5.83 1949 3.66 1950 4.22 1951 5.39 1952 5.00 1953 3.55 1954 13.89 1955 5.75 1956 6.30 1957 4.58 1958 6.37 1959 6.43 1960 7.15 1961 5.04 1962 6.23 1963 5.86 1964 3.68 1965 4.27 1966 5.49 1967 3.60 1968 9.28 1969 2.60 1970 5.08 1971 7.44 1972 4.68 1973 5.17 1974 8.56 1975 3.90 1976 5.06 1977 5.25 1978 5.70 1979 5.21 1980 5.12 1981 6.54 1982 4.33 1983 5.71 1984 8.16 1985 6.06 1986 6.20 1987 5.80 1988 4.37 1989 5.49 1990 5.16 1991 4.99 1992 3.92 1993 4.71 1994 2.70 1995 5.30 1996 4.33 1997 5.33 1998 8.90 1999 4.30 2000 Duration: 12h 10/04/1948 1.70 07/16/1949 3.54 09/22/1950 1.43 10/07/1951 1.88 11/21/1952 2.47 09/05/1953 3.14 08/18/1954 1.69 08/12/1955 7.33 07/05/1956 2.70 10/06/1957 3.80 08/03/1958 3.93 07/01/1959 4.58 08/10/1960 2.85 10/20/1961 5.56 01/06/1962 3.10 06/02/1963 3.51 08/30/1964 2.18 07/25/1965 2.65 10/18/1966 2.71 07/20/1967 2.22 11/12/1968 1.67 07/22/1969 5.53 07/04/1970 1.30 10/23/1971 2.31 06/18/1972 3.85 12/08/1973 2.06 08/06/1974 3.25 07/11/1975 3.11 09/15/1976 2.09 10/26/1977 3.84 08/06/1978 2.02 09/21/1979 3.04 10/18/1980 3.44 05/11/1981 3.05 07/12/1982 2.67 06/20/1983 2.96 03/25/1984 1.85 08/18/1985 4.73 07/23/1986 3.00 04/16/1987 2.63 07/23/1988 3.53 09/20/1989 1.85 08/09/1990 3.14 06/22/1991 2.95 03/06/1992 2.53 08/06/1993 1.82 09/22/1994 2.33 09/01/1995 1.86 10/18/1996 2.40 07/22/1997 2.03 12/12/1998 1.88 09/15/1999 3.99 06/28/2000 2.50 Duration: 20d 4.82 1921 6.85 1922 13.59 1923 8.72 1924 5.89 1925 5.37 1926 8.41 1927 7.21 1928 7.19 1929 6.45 1930 11.12 1931 5.48 1932 8.57 1933 5.85 1934 10.21 1935 7.57 1936 8.79 1937 11.80 1938 5.44 1939 9.68 1940 5.25 1941 7.32 1942 4.78 1943 6.36 1944 14.74 1945 6.96 1946 6.90 1947 7.62 1948 8.51 1949 6.18 1950 4.60 1951 6.36 1952 6.02 1953 4.34 1954 14.09 1955 9.96 1956 7.38 1957 6.33 1958 12.29 1959 11.18 1960 8.78 1961 6.56 1962 7.10 1963 7.30 1964 4.87 1965 5.90 1966 5.98 1967 4.46 1968 13.95 1969 3.86 1970 6.84 1971 9.80 1972 6.06 1973 6.94 1974 11.16 1975 5.50 1976 7.86 1977 7.58 1978 8.52 1979 5.89 1980 6.39 1981 8.95 1982 5.62 1983 7.19 1984 9.62 1985 7.26 1986 7.53 1987 7.50 1988 6.61 1989 6.62 1990 5.79 1991 6.68 1992 5.61 1993 7.14 1994 3.67 1995 7.15 1996 4.71 1997 7.67 1998 14.54 1999 6.05 2000 Duration: 24h 08/04/1948 2.54 07/16/1949 4.22 07/20/1950 1.64 10/07/1951 1.88 11/20/1952 2.77 09/05/1953 3.14 01/21/1954 1.69 08/12/1955 8.79 11/01/1956 4.07 08/18/1957 4.12 08/03/1958 3.95 07/01/1959 4.58 09/11/1960 3.12 10/20/1961 6.50 06/12/1962 3.73 06/02/1963 4.61 08/30/1964 2.28 07/25/1965 2.65 10/18/1966 3.52 08/23/1967 2.30 03/12/1968 1.96 07/22/1969 5.73 11/10/1970 1.39 10/22/1971 3.26 06/18/1972 3.91 12/08/1973 2.23 08/06/1974 3.25 07/11/1975 3.16 09/15/1976 2.16 10/26/1977 4.35 04/26/1978 2.60 09/21/1979 3.25 10/18/1980 3.45 05/10/1981 3.08 07/12/1982 2.79 06/20/1983 2.98 03/25/1984 2.54 08/18/1985 5.58 07/23/1986 3.00 04/24/1987 2.97 07/22/1988 3.84 07/15/1989 2.43 08/09/1990 4.15 06/22/1991 2.98 03/06/1992 3.43 03/03/1993 2.36 09/21/1994 2.69 03/08/1995 1.88 10/18/1996 2.40 07/22/1997 2.33 03/08/1998 2.52 09/15/1999 5.01 06/28/2000 2.69 Duration: 30d 5.93 1921 9.19 1922 15.20 1923 9.58 1924 6.90 1925 7.56 1926 9.77 1927 10.17 1928 7.97 1929 7.37 1930 12.69 1931 7.14 1932 9.09 1933 6.60 1934 10.60 1935 8.67 1936 11.49 1937 15.11 1938 5.86 1939 11.15 1940 5.76 1941 8.06 1942 6.18 1943 9.35 1944 16.08 1945 9.41 1946 7.19 1947 10.11 1948 9.58 1949 6.95 1950 6.25 1951 7.54 1952 6.84 1953 5.16 1954 15.63 1955 10.59 1956 8.44 1957 10.26 1958 12.85 1959 11.76 1960 8.93 1961 8.24 1962 8.48 1963 9.88 1964 6.51 1965 7.73 1966 7.62 1967 5.14 1968 16.29 1969 4.88 1970 9.75 1971 11.70 1972 7.70 1973 7.43 1974 13.39 1975 7.58 1976 10.83 1977 8.56 1978 10.46 1979 6.96 1980 7.93 1981 9.42 1982 8.72 1983 11.10 1984 11.76 1985 10.76 1986 8.34 1987 8.46 1988 6.81 1989 11.42 1990 7.04 1991 7.92 1992 7.59 1993 8.30 1994 5.00 1995 7.91 1996 6.53 1997 9.77 1998 16.60 1999 8.08 2000 Duration: 45d 8.01 1921 12.23 1922 16.76 1923 10.84 1924 8.09 1925 10.17 1926 12.28 1927 13.95 1928 10.65 1929 8.56 1930 15.22 1931 9.07 1932 10.98 1933 8.68 1934 12.74 1935 11.21 1936 14.14 1937 21.79 1938 8.03 1939 12.46 1940 6.24 1941 9.66 1942 8.16 1943 10.19 1944 18.23 1945 12.06 1946 9.65 1947 11.78 1948 13.43 1949 8.23 1950 7.84 1951 10.85 1952 7.47 1953 7.31 1954 21.84 1955 11.38 1956 10.27 1957 11.71 1958 15.17 1959 15.25 1960 10.11 1961 10.74 1962 9.40 1963 12.41 1964 9.22 1965 9.87 1966 10.57 1967 6.96 1968 20.54 1969 5.91 1970 11.51 1971 15.82 1972 8.93 1973 13.53 1974 14.88 1975 9.89 1976 11.24 1977 12.53 1978 14.90 1979 9.21 1980 10.20 1981 12.03 1982 9.73 1983 13.00 1984 14.23 1985 13.03 1986 10.07 1987 9.60 1988 9.82 1989 12.53 1990 8.63 1991 10.67 1992 9.91 1993 10.08 1994 6.51 1995 13.86 1996 8.18 1997 12.07 1998 18.15 1999 11.58 2000 Duration: 48h 08/04/1948 2.54 07/16/1949 4.22 07/04/1950 1.87 10/07/1951 1.88 11/19/1952 4.45 09/05/1953 3.16 08/18/1954 2.30 08/11/1955 9.31 07/04/1956 3.64 08/18/1957 4.22 08/03/1958 3.95 07/01/1959 5.22 09/10/1960 4.64 10/20/1961 6.72 06/12/1962 3.75 06/02/1963 4.87 08/30/1964 4.06 07/25/1965 2.67 10/18/1966 3.61 08/23/1967 2.87 03/12/1968 2.28 07/21/1969 6.66 11/10/1970 1.40 10/22/1971 3.34 10/05/1972 5.30 04/25/1973 2.46 08/06/1974 3.61 07/11/1975 4.93 01/25/1976 2.38 10/26/1977 4.38 04/25/1978 3.34 02/24/1979 4.00 10/18/1980 3.45 05/10/1981 3.31 07/12/1982 4.07 06/20/1983 3.16 05/28/1984 2.66 08/17/1985 5.85 07/22/1986 3.20 04/24/1987 3.43 07/21/1988 4.88 07/15/1989 2.47 08/09/1990 4.22 06/22/1991 3.19 03/06/1992 3.69 03/03/1993 2.37 03/01/1994 2.87 08/09/1995 2.02 10/07/1996 3.19 07/22/1997 3.56 03/17/1998 2.89 09/15/1999 5.03 06/27/2000 3.50 Duration: 60d 8.96 1921 15.64 1922 18.54 1923 12.78 1924 8.85 1925 13.27 1926 16.02 1927 15.36 1928 11.50 1929 10.04 1930 16.70 1931 10.29 1932 13.43 1933 10.75 1934 13.76 1935 12.75 1936 17.13 1937 23.40 1938 10.43 1939 14.54 1940 8.53 1941 11.92 1942 10.38 1943 11.35 1944 19.07 1945 13.74 1946 11.92 1947 13.66 1948 16.17 1949 10.25 1950 9.15 1951 11.50 1952 9.00 1953 7.70 1954 22.61 1955 14.20 1956 14.88 1957 13.32 1958 16.97 1959 19.08 1960 12.75 1961 13.09 1962 9.86 1963 16.34 1964 10.10 1965 10.63 1966 11.68 1967 8.29 1968 23.23 1969 7.09 1970 12.85 1971 19.07 1972 10.54 1973 13.85 1974 17.55 1975 11.77 1976 12.82 1977 13.79 1978 17.43 1979 9.89 1980 12.47 1981 14.87 1982 11.38 1983 15.40 1984 17.56 1985 14.15 1986 14.23 1987 10.85 1988 11.98 1989 13.16 1990 10.36 1991 13.39 1992 12.21 1993 12.48 1994 7.27 1995 15.32 1996 9.21 1997 17.00 1998 19.51 1999 13.56 2000