The U.S. Drought Monitor (USDM) is a map that is updated each Thursday to show the location and intensity of drought across the country. Along with these weekly maps, the USDM provides weekly Drought Change Map that displays changes in drought class degradation and drought class improvements across the United States. USDM offers Drought Change Maps at weekly, monthly and annual timescales.
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US Drought Monitor Change Maps
How to use this site:
- Use the drop down menus to select a date, scale, and time frame to view a series of change maps for a selected week.
- Change maps are available at the follow scales: 1 week, 4 week (1 month), 8 week (2 month), 12 week (3 month), 24 week (4 month), or 52 week (1 year)
Data Source: National Drought Mitigation Center (NDMC)
Data Type: Land-based Station
Period of Record: Present
Data Format: images pdf