The 2026 El Niño is poised to cause unprecedented extreme weather patterns. Forecasting models can't predict these patterns at this time. It will likely bring conditions that are unlike past seasons. Forecasters say the lack of data makes it challenging to foresee storms, droughts, and heatwaves. Scientists watch sea surface temperatures in the Pacific. They anticipate impacts arriving over the subsequent period. Without good predictions, governments and communities should be prepared to many impacts. Researchers seek to upgrade their systems as new data becomes available. Right now, uncertainty is the main characteristic of the 2026 El Niño.