Instrumental PDSIJun - Aug 1911

Instrumental PDSIJun - Aug 1934

Instrumental PDSIJun - Aug 1984

Reconstructed PDSIJun - Aug 1911

Reconstructed PDSIJun - Aug 1934

Reconstructed PDSIJun - Aug 1984

from the North American Drought Atlas http://drought.memphis.edu/NADA/