|Category||Description||Possible Impacts||Palmer Drought Index||CPC Soil Moisture Model (Percentiles)||USGS Weekly Streamflow (Percentiles)||Standardized Precipitation Index (SPI)||Objective Short and Long-term Drought Indicator Blends (Percentiles)|
|D0||Abnormally Dry||Going into drought: short-term dryness slowing planting, growth of crops or pastures. Coming out of drought: some lingering water deficits; pastures or crops not fully recovered.||-1.0 to -1.9||21-30||21-30||-0.5 to -0.7||21-30|
|D1||Moderate Drought||Some damage to crops, pastures; streams, reservoirs, or wells low, some water shortages developing or imminent; voluntary water-use restrictions requested.||-2.0 to -2.9||11-20||11-20||-0.8 to -1.2||11-20|
|D2||Severe Drought||Crop or pasture losses likely; water shortages common; water restrictions imposed.||-3.0 to -3.9||6-10||6-10||-1.3 to -1.5||6-10|
|D3||Extreme Drought||Major crop/pasture losses; widespread water shortages or restrictions.||-4.0 to -4.9||3-5||3-5||-1.6 to -1.9||3-5|
|D4||Exceptional Drought||Exceptional and widespread crop/pasture losses; shortages of water in reservoirs, streams, and wells creating water emergencies.||-5.0 or less||0-2||0-2||-2.0 or less||0-2|
The U.S. Drought Monitor is produced in partnership between the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, and the National Oceanic and Atmospheric Administration. Maps courtesy of NDMC-UNL.
Source: Drought Monitor