Major X1.8 solar flare produces Earth-directed CME, impact expected late October 10

A major solar flare measuring X1.8 erupted from Earth-facing Active Region 3848 at 01:56 UTC on October 9, 2024. The event started at 01:25 and ended at 02:43 UTC. A fast-moving full halo coronal mass ejection (CME) was produced during the event, with the impact expected from late October 10 to early on October 11. Solar proton counts started sharply rising at 02:40 UTC and reached S2 – Moderate solar radiation storm levels at 07:30 UTC.

CME produced by X1.8 solar flare on October 9, 2024 with Comet Tsuchinshan-ATLAS. Image credit: NASA/ESA LASCO, SDO/AIA 304, Helioviewer, The Watchers

A significant, long-duration solar flare classified as X1.8 erupted from geoeffective Active Region 3848 at 01:56 UTC on October 9, 2024. The flare produced a fast-moving coronal mass ejection (CME), expected to impact Earth between late October 10 and early October 11. X-class flares are the most intense category, with X1.8 indicating a strong burst of radiation.

A Type II Radio Emission, with an estimated velocity of 5 176 km/s was detected at 01:44 UTC. Type II emissions occur in association with eruptions on the Sun and typically indicate a coronal mass ejection is associated with a flare event.

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