United States Drought Monitor
The U.S. Drought Monitor is a map released every Thursday, showing parts of the U.S. that are in drought. The map uses five classifications: abnormally dry (D0), showing areas that may be going into or are coming out of drought, and four levels of drought: moderate (D1), severe (D2), extreme (D3) and exceptional (D4).
Information sources
Indicator
Palmer Drought Severity Index (PDSI), 2000 - 2019
CPC Soil Moisture Model (Percentiles),
USGS Weekly Streamflow (Percentiles),
Standardized Precipitation Index (SPI),
Objective Drought Indicator Blends (Percentiles)