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Monitoring Hurricane Ophelia

17 October 2017

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The Copernicus Sentinel-3A satellite captured different views of Hurricane Ophelia in the past week on its path towards Europe.

Originally classified as a tropical storm, Ophelia was later upgraded to a hurricane. By the time it reached the British Isles the storm had weakened to a tropical storm once again but still poses a weather hazard to areas in its path.

The OLCI and SLSTR instruments aboard Sentinel-3 were used to acquire these views of the storm, which demonstrate the versatility and benefits of the mission for weather monitoring.

This first image acquired on 11 October 2017 shows Hurricane Ophelia about 1300 km southwest of the Azores islands and some 2000 km off the African coast. The image was captured with OLCI (Ocean Land and Colour Instrument).

Read more and download the high resolution image.


Sentinel-3A later saw the temperature at the top of Hurricane Ophelia on 15 October as the storm approached the British Isles. This image was acquired with SLSTR (Sea and Land Surface Temperature Radiometer) and reveals that the brightness temperature of the clouds at the top of the storm, some 12-15 km above the ocean, range from about -50°C near the eye of the storm to about 15°C at the edges.

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09 November 2018

The Copernicus Sentinel-3 mission takes us over Madagascar with this image which was captured on 7 August 2018. This huge island nation, located off the east coast of Africa and seen in the left of the image, has a population of around 25 million.