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Drought Hazard Average Annual Weeks
About this map: This depiction of drought hazard zones across Puerto Rico is based on outputs from the United States Drought Monitor (USDM). USDM data indicate drought conditions on a weekly basis (2000-2019). The hexagonal grids utilized here provide a standardized method for overlaying multiple hazards each with different spatial representations. An average annual number of drought weeks is calculated for each hexagonal grid, representing 0.5 sq. miles, and is symbolized using an equal interval classification scale showing areas of higher drought frequency across the Island. |