DeepMind's WeatherNext model has achieved a breakthrough in forecasting cyclones, providing an extra day of warning time. The model uses a unique combination of training, architecture, and low-resolution inputs to predict a cyclone's track, intensity, and wind structure with state-of-the-art accuracy. The model has been open-sourced, allowing the research community to build on and improve it. This breakthrough has the potential to save lives and reduce economic losses from cyclones.