Currrent IMERG Accumulated Anomaly

The IMERG accumulated precipitation anomalies from June 1, 2026, to the present represent the total deviation of global rainfall from historical averages over this specific period, serving as a distinct visual footprint of El Niño’s disruption of normal weather patterns. Because the IMERG (Integrated Multi-satellitE Retrievals for GPM) network tracks precise precipitation data, calculating the accumulated anomalies reveals exactly where prolonged dry or wet spells have taken hold. In the context of an El Niño event, this visualization typically illustrates a massive shift in atmospheric circulation, characterized by significant precipitation deficits (negative anomalies depicted in browns) over regions like Indonesia, northern Australia, and parts of the Amazon, contrasted with intense, above-average rainfall (positive anomalies depicted in cyan) migrating into the central and eastern equatorial Pacific. Ultimately, tracking these accumulations over this exact multi-month timeframe allows scientists to quantify the magnitude of El Niño-driven climate teleconnections and clearly visualize the regions experiencing resulting drought or flood risks.