The STCE does Fundamental Research.
Late on 1 February, sunspot group 4366 produced a strong X-class flare which was associated with the ejection of an earth-directed magnetic cloud ("CME"). There's a chance that the expected arrival time is a bit earlier than expected, around 23:00UTC on 4 February (+/- 12 hours). The expected intensity of the geomagnetic storm remains at minor to strong levels, so -for Belgium- there's only a small chance on aurora low over the northern horizon. Meanwhile, NOAA 4366 produced another strong X-class flare on 4 February. (***UPDATED 5***)
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A concise analysis of the spectacular aurora that were observed during the 19-20 January geomagnetic storm.
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Proba-3/ASPIICS captured three prominence eruptions in five hours during an active period on 21 September 2025.
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The magnetic cloud (CME) associated with yesterday's X1 flare has already arrived. A severe geomagnetic storm is in progress. Spectacular aurora have been observed over Belgium.
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NOAA 4341 produced a long-duration X1.9 flare during the late afternoon of 18 January. The associated coronal mass ejection is expected to impact the Earth's magnetic field on 20 January, possibly resulting in a major geomagnetic storm. Currently, a proton event is in progress.
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