On January 18, 2026, NOAA’s GOES-19 observed a powerful coronal mass ejection (CME) using CCOR-1, the first coronagraph in geostationary orbit. Imagery spanning 00:00:25 UTC on January 18 to 05:45:25 UTC on January 19 gave the Space Weather Prediction Center its first confirmation of the eruption and enabled analysis of its size, speed, and direction. The event prompted a G4 severe geomagnetic-storm watch for January 20, 2026, and was described as one of the strongest solar storms in decades.[1]
The main lunar hazard is not geomagnetic disruption at the surface, because the Moon lacks Earth’s global magnetosphere, but direct exposure to solar energetic particles, extreme ultraviolet radiation, and CME-driven plasma. These can damage spacecraft electronics, degrade solar arrays, corrupt or interrupt communications, and increase crew radiation dose; a severe event could simultaneously affect surface systems, relay satellites, navigation, and stored digital archives. CCOR-1’s geostationary vantage improves early CME confirmation and supports warning lead time, while NOAA’s broader CCOR network includes GOES-19, launched June 25, 2024, and SWFO-L1, launched in 2025.[1][2]
The Ark should integrate NOAA SWPC alerts and CCOR-derived CME tracking into a timed protective-mode protocol: suspend exposed maintenance and vehicle activity, move crews into shielded habitats, isolate vulnerable electronics, preserve redundant power and communications, and verify archive integrity after the event. Research should quantify shielding and fault-tolerance requirements for G4 and higher events, maintain independent space-weather sensors at lunar orbit and the surface, and design for warning latency, since a CME’s direction and speed must be established rapidly after coronagraph detection.[1][2]