Periods of 2 or More Months of Severe or Extreme Drought
| Drought Periods | Duration | Lowest PDSI |
|---|---|---|
| 9/1895 - 1/1896 | 5 months | -3.96 in 1/1896 |
| 12/1896 - 4/1897 | 5 months | -3.42 in 3/1897 |
| 11/1900 - 2/1901 | 4 months | -3.72 in 2/1901 |
| 8/1909 - 1/1910 | 6 months | -4.64 in 11/1909 |
| 7/1910 - 8/1910 | 2 months | -3.34 in 8/1910 |
| 10/1910 - 3/1911 | 6 months | -3.85 in 12/1910 |
| 5/1911 - 7/1911 | 3 months | -3.72 in 5/1911 |
| 10/1914 - 12/1914 | 3 months | -3.95 in 11/1914 |
| 10/1922 - 12/1923 | 15 months | -4.83 in 12/1922 |
| 8/1930 - 6/1931 | 11 months | -5.38 in 1/1931 |
| 10/1931 - 2/1932 | 5 months | -4.67 in 12/1931 |
| 11/1939 - 1/1940 | 3 months | -3.61 in 1/1940 |
| 10/1963 - 12/1963 | 3 months | -4.04 in 10/1963 |
| 7/1964 - 4/1966 | 22 months | -5.60 in 11/1964 |
| 6/1966 - 11/1966 | 6 months | -4.08 in 8/1966 |
| 1/1967 - 2/1967 | 2 months | -3.45 in 2/1967 |
| 12/1980 - 1/1981 | 2 months | -3.70 in 1/1981 |
| 8/1995 - 9/1995 | 2 months | -3.31 in 8/1995 |
| Drought Periods | Duration | Lowest PDSI |
|---|---|---|
| 11/1895 - 1/1896 | 3 months | -3.97 in 1/1896 |
| 11/1900 - 2/1901 | 4 months | -4.06 in 2/1901 |
| 9/1909 - 1/1910 | 5 months | -4.43 in 11/1909 |
| 7/1910 - 8/1910 | 2 months | -3.27 in 8/1910 |
| 10/1910 - 3/1911 | 6 months | -4.08 in 12/1910 |
| 5/1911 - 7/1911 | 3 months | -3.76 in 5/1911 |
| 10/1914 - 12/1914 | 3 months | -3.82 in 11/1914 |
| 11/1922 - 12/1922 | 2 months | -3.90 in 12/1922 |
| 5/1923 - 12/1923 | 8 months | -4.29 in 8/1923 |
| 8/1930 - 6/1931 | 11 months | -4.95 in 1/1931 |
| 9/1931 - 2/1932 | 6 months | -4.40 in 12/1931 |
| 4/1932 - 9/1932 | 6 months | -4.24 in 9/1932 |
| 11/1939 - 1/1940 | 3 months | -3.90 in 1/1940 |
| 9/1941 - 2/1942 | 6 months | -4.16 in 11/1941 |
| 9/1957 - 11/1957 | 3 months | -3.07 in 10/1957 |
| 8/1964 - 1/1966 | 18 months | -4.95 in 7/1965 |
| 6/1966 - 11/1966 | 6 months | -4.21 in 8/1966 |
| 1/1967 - 2/1967 | 2 months | -3.40 in 2/1967 |
| 8/1980 - 1/1981 | 6 months | -5.07 in 1/1981 |
| 3/1985 - 4/1985 | 2 months | -4.30 in 4/1985 |
| 8/1991 - 2/1992 | 7 months | -3.53 in 2/1992 |
| 7/1999 - 8/1999 | 2 months | -3.54 in 8/1999 |
| Drought Periods | Duration | Lowest PDSI |
|---|---|---|
| 11/1895 - 1/1896 | 3 months | -3.62 in 1/1896 |
| 12/1900 - 2/1901 | 3 months | -4.00 in 2/1901 |
| 11/1909 - 12/1909 | 2 months | -3.81 in 12/1909 |
| 10/1910 - 3/1911 | 6 months | -3.62 in 12/1910 |
| 8/1923 - 12/1923 | 5 months | -3.53 in 8/1923 |
| 8/1930 - 6/1931 | 11 months | -5.15 in 1/1931 |
| 11/1931 - 12/1931 | 2 months | -3.51 in 12/1931 |
| 11/1941 - 1/1942 | 3 months | -3.17 in 11/1941 |
| 12/1949 - 1/1950 | 2 months | -3.40 in 1/1950 |
| 8/1957 - 11/1957 | 4 months | -3.84 in 11/1957 |
| 7/1963 - 8/1963 | 2 months | -3.45 in 8/1963 |
| 8/1964 - 2/1965 | 7 months | -4.08 in 11/1964 |
| 4/1965 - 1/1966 | 10 months | -4.47 in 12/1965 |
| 6/1966 - 8/1966 | 3 months | -4.64 in 8/1966 |
| 7/1999 - 8/1999 | 2 months | -3.40 in 7/1999 |
| 11/2001 - 5/2002 | 7 months | -4.64 in 2/2002 |
| 7/2002 - 9/2002 | 3 months | -3.93 in 8/2002 |
| Drought Periods | Duration | Lowest PDSI |
|---|---|---|
| 11/1895 - 2/1896 | 4 months | -4.67 in 1/1896 |
| 4/1896 - 1/1897 | 10 months | -4.09 in 8/1896 |
| 10/1900 - 2/1901 | 5 months | -4.84 in 2/1901 |
| 12/1908 - 1/1909 | 2 months | -3.51 in 1/1909 |
| 8/1909 - 1/1910 | 6 months | -4.54 in 12/1909 |
| 3/1910 - 5/1910 | 3 months | -4.15 in 3/1910 |
| 10/1910 - 7/1911 | 10 months | -4.33 in 7/1911 |
| 10/1914 - 12/1914 | 3 months | -3.91 in 11/1914 |
| 10/1922 - 12/1923 | 15 months | -4.36 in 12/1922 |
| 6/1925 - 9/1925 | 4 months | -3.97 in 9/1925 |
| 5/1926 - 7/1926 | 3 months | -3.40 in 7/1926 |
| 7/1930 - 4/1932 | 22 months | -6.77 in 1/1931 |
| 8/1932 - 9/1932 | 2 months | -3.46 in 9/1932 |
| 10/1941 - 2/1942 | 5 months | -3.64 in 11/1941 |
| 11/1964 - 1/1965 | 3 months | -3.27 in 12/1964 |
| 6/1965 - 9/1965 | 4 months | -3.70 in 7/1965 |
| 11/1965 - 1/1966 | 3 months | -3.98 in 12/1965 |
| 5/1966 - 8/1966 | 4 months | -5.55 in 8/1966 |
| 7/1991 - 8/1991 | 2 months | -3.57 in 7/1991 |
| 10/1991 - 2/1992 | 5 months | -3.54 in 11/1991 |
| 7/1999 - 8/1999 | 2 months | -3.47 in 7/1999 |
| 11/2001 - 7/2002 | 9 months | -5.30 in 2/2002 |
| Drought Periods | Duration | Lowest PDSI |
|---|---|---|
| 9/1895 - 2/1896 | 6 months | -5.35 in 1/1896 |
| 4/1896 - 6/1897 | 15 months | -4.86 in 8/1896 |
| 10/1897 - 11/1897 | 2 months | -3.46 in 10/1897 |
| 5/1900 - 4/1901 | 12 months | -5.79 in 2/1901 |
| 6/1901 - 7/1901 | 2 months | -3.65 in 7/1901 |
| 11/1908 - 3/1909 | 5 months | -4.73 in 1/1909 |
| 5/1909 - 7/1911 | 27 months | -6.45 in 12/1909 |
| 9/1914 - 1/1915 | 5 months | -4.79 in 11/1914 |
| 4/1915 - 7/1915 | 4 months | -3.46 in 5/1915 |
| 11/1916 - 5/1917 | 7 months | -4.02 in 5/1917 |
| 11/1918 - 4/1919 | 6 months | -3.42 in 4/1919 |
| 3/1921 - 4/1924 | 38 months | -6.65 in 12/1922 |
| 3/1925 - 1/1926 | 11 months | -4.42 in 9/1925 |
| 3/1926 - 9/1926 | 7 months | -4.58 in 7/1926 |
| 12/1928 - 3/1929 | 4 months | -3.77 in 3/1929 |
| 7/1929 - 9/1929 | 3 months | -4.13 in 8/1929 |
| 1/1930 - 9/1932 | 33 months | -7.51 in 1/1931 |
| 7/1934 - 8/1934 | 2 months | -3.28 in 8/1934 |
| 11/1939 - 1/1940 | 3 months | -4.06 in 1/1940 |
| 11/1953 - 1/1954 | 3 months | -3.14 in 1/1954 |
| 10/1964 - 2/1965 | 5 months | -3.84 in 11/1964 |
| 5/1965 - 9/1965 | 5 months | -4.39 in 7/1965 |
| 7/1966 - 8/1966 | 2 months | -3.82 in 8/1966 |
| 12/1980 - 1/1981 | 2 months | -3.95 in 1/1981 |
| 7/1991 - 2/1992 | 8 months | -3.83 in 11/1991 |
| 8/1995 - 9/1995 | 2 months | -3.62 in 9/1995 |
| Drought Periods | Duration | Lowest PDSI |
|---|---|---|
| 9/1895 - 1/1896 | 5 months | -4.76 in 1/1896 |
| 5/1896 - 10/1896 | 6 months | -4.08 in 8/1896 |
| 12/1896 - 4/1897 | 5 months | -3.55 in 1/1897 |
| 6/1900 - 2/1901 | 9 months | -4.96 in 2/1901 |
| 10/1908 - 3/1909 | 6 months | -5.16 in 12/1908 |
| 5/1909 - 9/1911 | 29 months | -7.18 in 12/1909 |
| 8/1913 - 9/1913 | 2 months | -3.12 in 9/1913 |
| 10/1914 - 1/1915 | 4 months | -4.89 in 11/1914 |
| 3/1915 - 6/1915 | 4 months | -3.75 in 4/1915 |
| 11/1916 - 5/1917 | 7 months | -3.67 in 4/1917 |
| 4/1921 - 2/1922 | 11 months | -3.95 in 10/1921 |
| 4/1922 - 5/1922 | 2 months | -3.58 in 5/1922 |
| 9/1922 - 3/1924 | 19 months | -5.63 in 12/1922 |
| 8/1929 - 9/1929 | 2 months | -3.40 in 8/1929 |
| 7/1930 - 4/1932 | 22 months | -7.26 in 2/1931 |
| 8/1932 - 9/1932 | 2 months | -3.93 in 9/1932 |
| 6/1955 - 7/1955 | 2 months | -3.81 in 7/1955 |
| 7/1962 - 8/1962 | 2 months | -3.03 in 7/1962 |
| 9/1964 - 9/1965 | 13 months | -5.38 in 12/1964 |
| 7/1966 - 2/1967 | 8 months | -4.08 in 8/1966 |
| 11/1988 - 2/1989 | 4 months | -3.93 in 1/1989 |
| 6/1991 - 2/1992 | 9 months | -4.31 in 11/1991 |
| Drought Periods | Duration | Lowest PDSI |
|---|---|---|
| 9/1895 - 10/1896 | 14 months | -5.51 in 1/1896 |
| 12/1896 - 1/1897 | 2 months | -3.47 in 1/1897 |
| 3/1897 - 4/1897 | 2 months | -3.14 in 4/1897 |
| 10/1897 - 11/1897 | 2 months | -3.56 in 10/1897 |
| 5/1900 - 1/1902 | 21 months | -6.01 in 12/1900 |
| 5/1905 - 7/1905 | 3 months | -3.08 in 5/1905 |
| 10/1908 - 3/1909 | 6 months | -5.66 in 12/1908 |
| 5/1909 - 7/1911 | 27 months | -6.37 in 12/1909 |
| 9/1914 - 1/1915 | 5 months | -4.79 in 11/1914 |
| 3/1915 - 6/1915 | 4 months | -4.06 in 4/1915 |
| 4/1917 - 5/1917 | 2 months | -3.08 in 5/1917 |
| 4/1921 - 11/1921 | 8 months | -4.35 in 7/1921 |
| 1/1922 - 2/1922 | 2 months | -3.21 in 2/1922 |
| 5/1922 - 11/1923 | 19 months | -6.64 in 12/1922 |
| 8/1925 - 9/1925 | 2 months | -3.83 in 9/1925 |
| 4/1926 - 7/1926 | 4 months | -4.03 in 7/1926 |
| 7/1930 - 6/1931 | 12 months | -7.57 in 12/1930 |
| 11/1931 - 12/1931 | 2 months | -3.73 in 11/1931 |
| 8/1939 - 9/1939 | 2 months | -3.53 in 8/1939 |
| 11/1939 - 2/1940 | 4 months | -3.84 in 1/1940 |
| 11/1949 - 12/1949 | 2 months | -3.26 in 11/1949 |
| 6/1963 - 8/1963 | 3 months | -3.08 in 7/1963 |
| 10/1963 - 12/1963 | 3 months | -3.79 in 10/1963 |
| 10/1964 - 2/1965 | 5 months | -4.55 in 12/1964 |
| 6/1965 - 9/1965 | 4 months | -3.61 in 7/1965 |
| 7/1966 - 8/1966 | 2 months | -3.64 in 8/1966 |
| 7/1991 - 6/1992 | 12 months | -4.40 in 12/1991 |
| 8/1995 - 9/1995 | 2 months | -3.83 in 9/1995 |
| 11/1998 - 12/1998 | 2 months | -4.28 in 12/1998 |
| 6/1999 - 1/2000 | 8 months | -4.22 in 8/1999 |
| 7/2001 - 8/2001 | 2 months | -3.41 in 8/2001 |
| Drought Periods | Duration | Lowest PDSI |
|---|---|---|
| 9/1895 - 8/1896 | 12 months | -5.60 in 1/1896 |
| 10/1897 - 11/1897 | 2 months | -3.58 in 10/1897 |
| 5/1900 - 7/1901 | 15 months | -5.85 in 2/1901 |
| 10/1901 - 11/1901 | 2 months | -3.84 in 11/1901 |
| 11/1904 - 2/1905 | 4 months | -3.60 in 12/1904 |
| 11/1908 - 3/1909 | 5 months | -4.65 in 12/1908 |
| 8/1909 - 7/1911 | 24 months | -5.35 in 12/1909 |
| 9/1914 - 12/1914 | 4 months | -4.47 in 11/1914 |
| 4/1915 - 5/1915 | 2 months | -3.34 in 4/1915 |
| 3/1921 - 8/1921 | 6 months | -3.83 in 7/1921 |
| 6/1922 - 11/1923 | 18 months | -6.14 in 12/1922 |
| 4/1925 - 9/1925 | 6 months | -4.38 in 9/1925 |
| 5/1926 - 7/1926 | 3 months | -3.80 in 7/1926 |
| 7/1930 - 8/1931 | 14 months | -8.13 in 1/1931 |
| 10/1931 - 2/1932 | 5 months | -3.91 in 11/1931 |
| 8/1932 - 9/1932 | 2 months | -3.81 in 9/1932 |
| 11/1953 - 2/1954 | 4 months | -4.33 in 2/1954 |
| 8/1963 - 12/1963 | 5 months | -4.58 in 10/1963 |
| 11/1964 - 12/1964 | 2 months | -3.36 in 12/1964 |
| 6/1965 - 1/1966 | 8 months | -4.72 in 12/1965 |
| 6/1966 - 2/1967 | 9 months | -4.77 in 1/1967 |
| 5/1969 - 6/1969 | 2 months | -3.30 in 5/1969 |
| 7/1991 - 6/1992 | 12 months | -4.67 in 11/1991 |
| 10/2001 - 4/2002 | 7 months | -5.18 in 2/2002 |
| 7/2002 - 8/2002 | 2 months | -3.46 in 8/2002 |
| Drought Periods | Duration | Lowest PDSI |
|---|---|---|
| 7/1895 - 8/1896 | 14 months | -5.32 in 1/1896 |
| 10/1897 - 11/1897 | 2 months | -3.66 in 10/1897 |
| 11/1899 - 1/1900 | 3 months | -3.03 in 1/1900 |
| 4/1900 - 5/1901 | 14 months | -5.21 in 2/1901 |
| 10/1901 - 1/1902 | 4 months | -4.14 in 11/1901 |
| 11/1904 - 6/1905 | 8 months | -3.87 in 12/1904 |
| 10/1908 - 3/1909 | 6 months | -5.30 in 12/1908 |
| 9/1909 - 12/1909 | 4 months | -4.09 in 12/1909 |
| 3/1910 - 12/1910 | 10 months | -4.18 in 8/1910 |
| 5/1911 - 7/1911 | 3 months | -4.22 in 7/1911 |
| 4/1915 - 5/1915 | 2 months | -3.33 in 4/1915 |
| 8/1922 - 11/1923 | 16 months | -5.49 in 12/1922 |
| 8/1925 - 9/1925 | 2 months | -3.88 in 9/1925 |
| 7/1930 - 8/1931 | 14 months | -7.34 in 1/1931 |
| 5/1932 - 2/1933 | 10 months | -4.36 in 9/1932 |
| 5/1934 - 7/1934 | 3 months | -3.94 in 7/1934 |
| 11/1939 - 1/1940 | 3 months | -3.91 in 1/1940 |
| 10/1953 - 7/1954 | 10 months | -5.13 in 12/1953 |
| 9/1963 - 2/1964 | 6 months | -4.18 in 12/1963 |
| 7/1965 - 9/1965 | 3 months | -3.59 in 8/1965 |
| 7/1966 - 2/1967 | 8 months | -3.63 in 1/1967 |
| 2/1969 - 6/1969 | 5 months | -3.75 in 6/1969 |
| 8/1991 - 2/1992 | 7 months | -4.14 in 11/1991 |
| Drought Periods | Duration | Lowest PDSI |
|---|---|---|
| 6/1895 - 2/1896 | 9 months | -5.17 in 11/1895 |
| 4/1896 - 6/1896 | 3 months | -4.18 in 5/1896 |
| 8/1899 - 1/1900 | 6 months | -4.24 in 11/1899 |
| 4/1900 - 6/1902 | 27 months | -5.07 in 10/1900 |
| 10/1908 - 3/1909 | 6 months | -5.52 in 12/1908 |
| 8/1909 - 12/1909 | 5 months | -4.27 in 11/1909 |
| 3/1910 - 12/1910 | 10 months | -4.17 in 8/1910 |
| 5/1911 - 7/1911 | 3 months | -4.08 in 7/1911 |
| 6/1921 - 10/1921 | 5 months | -3.69 in 7/1921 |
| 9/1922 - 11/1923 | 15 months | -4.71 in 12/1922 |
| 8/1930 - 2/1933 | 31 months | -6.97 in 2/1931 |
| 7/1933 - 6/1935 | 24 months | -6.47 in 7/1934 |
| 9/1936 - 10/1936 | 2 months | -3.38 in 9/1936 |
| 4/1941 - 6/1941 | 3 months | -3.64 in 5/1941 |
| 11/1953 - 2/1954 | 4 months | -3.98 in 12/1953 |
| 12/1960 - 1/1961 | 2 months | -3.80 in 1/1961 |
| 10/1963 - 2/1964 | 5 months | -3.89 in 10/1963 |
| 7/1991 - 3/1992 | 9 months | -4.75 in 11/1991 |
Based on the monthly Palmer Drought Severity Index as computed by the National Climatic Data Center.
Period of record: January 1895 through March 2006