Sentinel-1D outage notice leaves recovery date open

An October 27, 2026 operational notice from the European Space Agency records a temporary interruption to Sentinel-1D data following a satellite issue that began on October 26. ESA said recovery activities were ongoing, without giving a date for restoring the data supply.

Sentinel-1D feeds the Copernicus Data Space Ecosystem, where ESA’s April 16 announcement scheduled user access from April 17, 2026. That announcement described its calibrated radar products as ready for integration into the operational data offer on a global scale. The outage notice does not identify a disruption in any particular country.

Radar observations can image Earth’s surface through cloud and precipitation, regardless of sunlight, ESA explained when releasing Sentinel-1D’s first images on November 26, 2025. Those images included Antarctica, the southern tip of South America and Bremen in Germany; they predate the current interruption.

The October 27 alert names Sentinel-1D alone. It gives no technical explanation, tally of unavailable observations or indication of whether missed observations can be recovered. ESA directs readers to the Sentinel Operations Dashboard’s Events page for reporting on the anomaly’s impact.