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CME impact, another M-flare with a halo CME

The first of what could now be four possible CME impacts (later more on that) was observed today at the Sun-Earth L1 point at around 04;50 UTC. The total interplanetary magnetic field strength increased to about 17 nT, with the solar wind speed increasing to an impressive 800km/s. The north-south direction of the IMF (Bz) has been mostly northwards but a strong G3 geomagnetic storm watch remains in effect as more CMEs could still arrive at Earth in the coming 72 hours. If this was the first of the four CMEs that might arrive, this will likely be the weakest of them all.

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Current Farside Activity 417 AR4392 (including CMEs) 79 Comet C/2026 A1 (MAPS) for the southern hemisphere 18 Growth of Cycle 25 985 Incoming & Unnumbered Active Regions 223

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