Short-Term Percentiles
The Objective Short-Term Drought Indicator Blend Percentiles map approximates drought-related impacts that respond to precipitation (and secondarily other factors) on time scales ranging from a few days to a few months, such as wildfire danger, non-irrigated agriculture, topsoil moisture, range and pasture conditions, and unregulated streamflows.
Long-Term Percentiles
The Objective Long-Term Drought Indicator Blend Percentiles map approximates drought-related impacts that respond to precipitation on time scales ranging from several months to a few years, such as reservoir stores, irrigated agriculture, groundwater levels, and well water depth.
These maps are produced weekly by the National Drought Mitigation Center.