Periods of 2 or More Months of Severe or Extreme Drought
| Drought Periods | Duration | Lowest PDSI |
|---|---|---|
| 5/1911 - 6/1911 | 2 months | -3.23 in 6/1911 |
| 2/1925 - 9/1925 | 8 months | -3.96 in 4/1925 |
| 5/1930 - 12/1930 | 8 months | -3.99 in 9/1930 |
| 12/1943 - 2/1944 | 3 months | -3.48 in 2/1944 |
| 5/1944 - 10/1944 | 6 months | -4.25 in 8/1944 |
| 2/1947 - 3/1947 | 2 months | -3.13 in 2/1947 |
| 10/1949 - 2/1950 | 5 months | -3.80 in 12/1949 |
| 7/1957 - 11/1957 | 5 months | -3.87 in 9/1957 |
| 7/1965 - 8/1966 | 14 months | -4.54 in 4/1966 |
| 1/1967 - 2/1967 | 2 months | -3.14 in 2/1967 |
| 2/1985 - 4/1985 | 3 months | -3.75 in 4/1985 |
Based on the monthly Palmer Drought Severity Index as computed by the National Climatic Data Center.
Period of record: January 1895 through March 2006