Sentinel‑6B Satellite Improves Hurricane Forecasts During El Niño

NASA and its European partners launched the Sentinel‑6B satellite in November 2025 to enhance hurricane forecasting, safeguard infrastructure, and support commercial sectors such as shipping. The new platform builds on the legacy of its predecessor, Sentinel‑6 Michael Freilich, by providing high‑precision sea‑level height measurements that are critical for predicting storm surge and coastal impacts.

The Sentinel‑6B is now operating in tandem with Sentinel‑6 Michael Freilich, flying approximately 30 seconds behind the older satellite. Together they deliver continuous, overlapping data streams that improve the accuracy of sea‑level models during the current El Niño event—a historically strong phase of warmer Pacific waters that is expected to alter global weather patterns. The dual‑satellite configuration offers redundancy and higher temporal resolution, enabling more reliable real‑time monitoring of oceanic conditions that influence tropical cyclone development.

By delivering timely, precise sea‑level observations, the Sentinel‑6B program strengthens the scientific foundation for hurricane prediction and coastal risk management. Its data will help authorities refine evacuation plans, protect critical infrastructure, and optimize shipping routes, thereby reducing vulnerability to the intensified weather patterns associated with the ongoing El Niño.