How WeatherNext helped the National Hurricane Center better predict Hurricane Melissa’s historic landfall in Jamaica

WeatherNext, an AI weather prediction model developed by Google DeepMind and Google Research, helped the National Hurricane Center predict Hurricane Melissa would reach Category 5 intensity five days before landfall in Jamaica with high confidence, marking the first time such rapid intensification was successfully forecasted from a weak starting point. Unlike traditional weather models that excelled at predicting either a storm's path or intensity but not both, WeatherNext bridges this gap by training on decades of global weather patterns and extreme tropical cyclone data, allowing it to run multiple "what-if" scenarios (called ensembles, where the model generates 50 different possible outcomes) to give forecasters a fuller picture for decision-making. The early and accurate prediction gave communities crucial time to prepare and evacuate.