🚨 CESSI CME ALERT | 11 November 2025 | Halo CME Associated to X 5.2 Class Flare On November 11 at 10:00 UT, Active Region (AR) 14274 produced an X5.2 class solar flare, which was associated with a halo coronal mass ejection (CME). Our analysis indicates that the CME is Earth-directed, with a very high probability of (flank) impact. The CME is projected to reach Earth on 12 November at approximately 19:36 UT, with an uncertainty of ±8 hours and an estimated speed of around 946 km/s (range: 736–1416 km/s). There is a possibility of CME-CME interactions with an earlier CME during transit or Earth impact one after another. This has the potential to cause severe geomagnetic perturbations. Auroras at high-mid latitudes are expected. There is a moderate to high possibility of ionospheric perturbations leading to satellite signal outages, GNSS scintillations, GPS positioning errors, and enhanced orbital decay of LEO satellites. On November 10 at 09:19 UT, Active Region (AR) 14274 produced an X1.2 class solar flare, which was associated with a halo coronal mass ejection (CME). Our analysis indicates that the CME is Earth-directed, with a very high probability of impact later tonight. The CME is projected to reach Earth on 11 November at approximately 23:58 UT, with an uncertainty of ±8 hours and an estimated speed of around 846 km/s (range: 679–1224 km/s). There is a possibility of the CME catching up with an earlier Earth-directed CME in transit (and thus interacting), or impacting Earth soon after the earlier one. This has the potential to further escalate geomagnetic conditions, resulting in a strong storm. Expect auroras at high northern and southern latitudes, ionospheric perturbations leading to satellite signal outages, and potential enhanced orbital decay of LEO satellites.