ESA
• European Space Agency
Intense solar flare and fast CME observed — ESA warns of potential impacts to satellites, GNSS, HF comms and aviation
ESA reports: ESA actively monitoring severe space weather event In brief On 11 November 2025, an intense solar flare was observed, with a peak around 10:04 UTC. This was followed less than an hour later with the observation of a coronal mass ejection (CME), with an initial speed estimated to be around 1500 km/s and arriving at Earth on 12 November in the late evening or on 13 November in the early morning,.
