Past Long Range Forecasts and Verification (1932 to 2022)

During 1932-1988, forecasts for southwest monsoon seasonal rainfall were issued for NW India and Peninsula. These forecasts are prepared based on linear multiple regression models, which were updated/modified from time to time. During 1989 to 2022 , the forecasts for the southwest monsoon seasonal rainfall over the country as a whole were issued based on power regression models: Performance of Operational Forecasts (1988 TO 2022) for the SW Monsoon Seasonal (June to September) Rainfall for the Country as Whole