Climate at a Glance
National Time Series
Choose from the options below and click "Plot" to create a time series graph.
Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, Palmer Modified Drought Index (PMDI), published September 2022, retrieved on September 28, 2022 from https://www.ncdc.noaa.gov/cag/