Last updated: 29 May 2024 | Recent visits: 3 D ROUGHT GDO Indicator for Forecasting Unusually Wet and Dry Conditions SPI-1 based on the forecast of NCEP (version 1.0.0) This layer provides an early warning of persistent extreme wet and dry precipitation events over the world derived from 1-month Standardized Precipitation Index (SPI-1). The forecasts of SPI are derived from the forecasted precipitation provided by the US Nati... WEB PUB DWN GEO