Insights
Drought
--> -->Drought Index
The Standard Precipitation Index (SPI) is a drought metric that quantifies departures in observed precipitation relative to a historical period of record, and is closely related to soil moisture, rangeland vegetation, and hydrologic conditions. SPI maps developed represent deviations of total precipitation for the period January 1 - August 13 of 2022 relative to the entire period of record from 1979-2021, providing a near real-time perspective of global drought conditions.
