Precipitation annual maximum series (inches) Station ID: 36-6370 Station name: NORRISTOWN State: PA Latitude (decimal degrees): 40.1197 Longitude (decimal degrees): 75.3583 Elevation (feet): 70 Duration: 01d 1.30 1948 1.77 1949 1.98 1950 1.70 1951 2.87 1952 2.22 1953 2.45 1954 4.92 1955 1.97 1956 1.60 1957 2.29 1958 2.24 1959 3.68 1960 1.91 1961 1.65 1962 3.17 1963 2.35 1964 2.08 1965 3.30 1966 2.44 1967 3.28 1968 3.46 1969 2.68 1970 5.60 1971 3.04 1972 5.02 1973 2.10 1974 2.56 1975 1.65 1976 1.93 1977 2.81 1978 3.74 1979 2.21 1980 2.74 1981 2.71 1982 2.36 1983 3.26 1984 4.04 1985 4.83 1986 -9.99 1987 -9.99 1988 -9.99 1989 -9.99 1990 -9.99 1991 -9.99 1992 -9.99 1993 -9.99 1994 -9.99 1995 -9.99 1996 -9.99 1997 -9.99 1998 -9.99 1999 3.60 2000 Duration: 02d 2.50 1948 1.77 1949 3.65 1950 2.09 1951 4.64 1952 2.63 1953 2.69 1954 5.68 1955 2.40 1956 1.83 1957 3.59 1958 3.03 1959 6.60 1960 2.36 1961 1.91 1962 3.31 1963 2.73 1964 3.00 1965 3.61 1966 2.89 1967 3.58 1968 4.86 1969 4.56 1970 7.36 1971 3.76 1972 9.27 1973 2.22 1974 4.00 1975 1.99 1976 3.69 1977 2.86 1978 3.77 1979 2.54 1980 2.94 1981 3.30 1982 2.73 1983 3.97 1984 5.42 1985 4.83 1986 -9.99 1987 -9.99 1988 -9.99 1989 -9.99 1990 -9.99 1991 -9.99 1992 -9.99 1993 -9.99 1994 -9.99 1995 -9.99 1996 -9.99 1997 -9.99 1998 -9.99 1999 3.60 2000 Duration: 04d 2.68 1948 2.44 1949 3.84 1950 3.64 1951 5.08 1952 3.02 1953 2.70 1954 5.83 1955 2.97 1956 2.33 1957 3.60 1958 4.14 1959 7.37 1960 3.56 1961 2.53 1962 3.73 1963 3.02 1964 3.23 1965 4.33 1966 3.41 1967 3.58 1968 6.22 1969 4.57 1970 8.63 1971 3.77 1972 9.27 1973 2.62 1974 5.56 1975 2.14 1976 3.70 1977 2.86 1978 3.77 1979 2.86 1980 2.98 1981 3.61 1982 3.14 1983 4.81 1984 5.42 1985 4.83 1986 -9.99 1987 -9.99 1988 -9.99 1989 -9.99 1990 -9.99 1991 -9.99 1992 -9.99 1993 -9.99 1994 -9.99 1995 -9.99 1996 -9.99 1997 -9.99 1998 -9.99 1999 3.63 2000 Duration: 07d 3.31 1948 3.60 1949 4.20 1950 4.86 1951 5.92 1952 3.90 1953 3.00 1954 10.10 1955 4.49 1956 3.45 1957 3.85 1958 5.55 1959 7.38 1960 3.82 1961 3.11 1962 4.26 1963 4.04 1964 3.48 1965 4.35 1966 4.13 1967 4.24 1968 7.68 1969 4.61 1970 8.75 1971 5.18 1972 9.27 1973 3.65 1974 7.17 1975 3.08 1976 4.06 1977 4.27 1978 5.17 1979 3.40 1980 3.96 1981 4.07 1982 4.42 1983 5.51 1984 6.16 1985 5.41 1986 -9.99 1987 -9.99 1988 -9.99 1989 -9.99 1990 -9.99 1991 -9.99 1992 -9.99 1993 -9.99 1994 -9.99 1995 -9.99 1996 -9.99 1997 -9.99 1998 -9.99 1999 4.17 2000 Duration: 10d 4.07 1948 3.97 1949 4.55 1950 4.94 1951 6.13 1952 5.15 1953 4.19 1954 11.35 1955 4.59 1956 3.91 1957 4.63 1958 6.10 1959 8.36 1960 4.28 1961 3.33 1962 4.48 1963 4.09 1964 3.97 1965 7.62 1966 4.16 1967 5.10 1968 8.56 1969 5.84 1970 9.29 1971 5.90 1972 9.75 1973 4.38 1974 7.31 1975 3.31 1976 4.32 1977 5.05 1978 5.25 1979 3.86 1980 3.98 1981 4.07 1982 5.36 1983 5.95 1984 6.93 1985 5.83 1986 -9.99 1987 -9.99 1988 -9.99 1989 -9.99 1990 -9.99 1991 -9.99 1992 -9.99 1993 -9.99 1994 -9.99 1995 -9.99 1996 -9.99 1997 -9.99 1998 -9.99 1999 6.08 2000 Duration: 20d 5.83 1948 5.11 1949 7.63 1950 5.59 1951 6.82 1952 7.29 1953 5.66 1954 13.95 1955 6.73 1956 5.21 1957 6.37 1958 8.08 1959 10.07 1960 7.66 1961 5.61 1962 4.77 1963 4.99 1964 4.78 1965 9.08 1966 5.33 1967 7.22 1968 10.86 1969 6.48 1970 16.11 1971 8.36 1972 -9.99 1973 5.50 1974 8.51 1975 4.93 1976 6.30 1977 7.86 1978 8.96 1979 6.63 1980 5.61 1981 7.66 1982 7.98 1983 6.27 1984 7.17 1985 7.01 1986 -9.99 1987 -9.99 1988 -9.99 1989 -9.99 1990 -9.99 1991 -9.99 1992 -9.99 1993 -9.99 1994 -9.99 1995 -9.99 1996 -9.99 1997 -9.99 1998 -9.99 1999 8.82 2000 Duration: 30d 8.04 1948 7.53 1949 7.91 1950 6.45 1951 9.78 1952 9.61 1953 8.21 1954 14.26 1955 7.28 1956 6.72 1957 8.16 1958 9.66 1959 10.72 1960 8.53 1961 6.12 1962 6.94 1963 6.43 1964 6.47 1965 9.59 1966 8.25 1967 9.54 1968 11.51 1969 9.90 1970 17.08 1971 10.12 1972 -9.99 1973 5.74 1974 8.98 1975 5.64 1976 7.76 1977 8.90 1978 11.26 1979 8.72 1980 6.42 1981 8.62 1982 11.15 1983 8.44 1984 8.05 1985 10.52 1986 -9.99 1987 -9.99 1988 -9.99 1989 -9.99 1990 -9.99 1991 -9.99 1992 -9.99 1993 -9.99 1994 -9.99 1995 -9.99 1996 -9.99 1997 -9.99 1998 -9.99 1999 9.67 2000 Duration: 45d 9.55 1948 9.75 1949 9.50 1950 8.15 1951 12.45 1952 11.94 1953 9.78 1954 14.88 1955 9.81 1956 8.45 1957 10.07 1958 11.25 1959 11.96 1960 11.93 1961 7.90 1962 8.21 1963 7.67 1964 8.34 1965 12.72 1966 9.12 1967 11.42 1968 14.13 1969 11.44 1970 19.06 1971 13.68 1972 -9.99 1973 7.86 1974 10.90 1975 8.60 1976 9.85 1977 12.55 1978 14.16 1979 9.78 1980 8.77 1981 12.01 1982 13.83 1983 10.90 1984 9.59 1985 12.09 1986 -9.99 1987 -9.99 1988 -9.99 1989 -9.99 1990 -9.99 1991 -9.99 1992 -9.99 1993 -9.99 1994 -9.99 1995 -9.99 1996 -9.99 1997 -9.99 1998 -9.99 1999 10.51 2000 Duration: 60d 12.49 1948 11.57 1949 11.40 1950 11.60 1951 15.54 1952 13.92 1953 12.23 1954 16.68 1955 11.71 1956 10.26 1957 13.09 1958 15.58 1959 17.40 1960 12.54 1961 10.41 1962 8.81 1963 9.26 1964 10.78 1965 14.07 1966 12.08 1967 13.23 1968 15.39 1969 12.51 1970 22.36 1971 15.76 1972 -9.99 1973 9.90 1974 11.76 1975 9.88 1976 11.55 1977 14.06 1978 16.51 1979 11.98 1980 11.86 1981 15.16 1982 15.47 1983 13.27 1984 11.79 1985 14.86 1986 -9.99 1987 -9.99 1988 -9.99 1989 -9.99 1990 -9.99 1991 -9.99 1992 -9.99 1993 -9.99 1994 -9.99 1995 -9.99 1996 -9.99 1997 -9.99 1998 -9.99 1999 13.81 2000