X1.4 solar flare erupts on the Sun’s west limb — second X-class flare of the day
An impulsive solar flare measuring X1.4 erupted beyond the Sun’s west limb at 15:47 UTC on October 9, 2024. The event started at 15:44 and ended at 15:53 UTC.
Strong solar radiation in progress, severe geomagnetic storm watch in effect
A strong solar radiation storm is currently in progress as a result of a major X1.8 solar flare at 01:56 UTC on October 9, 2024.
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.
Major X2.1 and long-duration X1.0 solar flares erupt from AR 3842
A major solar flare measuring X2.1 erupted from Active Region 3842 at 19:13 UTC on October 7, 2024. The event started at 19:02 and ended at 19:31 UTC.
Models show multiple incoming CMEs, G3 – Strong or higher geomagnetic storm forecast
At least three coronal mass ejections (CMEs) are expected to strike Earth from October 5 to 7, prompting a G3 – Strong Geomagnetic Storm Watch, with the possibility of G4 – Severe geomagnetic storm conditions.
Major X9.0 solar flare erupts from Region 3842 — the strongest of Solar Cycle 25, Earth-directed CME produced
A major solar flare measuring X9.0 erupted from Active Region 3842 at 12:18 UTC on October 3, 2024. The event started at 12:08 and ended at 12:27 UTC. This is thus far the strongest solar flare of Solar Cycle 25.
Major X7.1 solar flare erupts from Region 3842, producing likely Earth-directed CME
A major solar flare measuring X7.1 erupted from Active Region 3842 at 22:20 UTC on October 1, 2024, producing a CME that most likely has an Earth-directed component. This is the second-strongest solar flare of Solar Cycle 25.
Long-duration M7.6 solar flare erupts from Region 3842
A long-duration solar flare measuring M7.6 erupted from Active Region 3842 at 23:59 UTC on September 30, 2024. A coronal mass ejection (CME) was not produced during this event but Earth-directed CMEs are possible from this region in the days ahead as it continues evolving and moving into a more geoeffective position.
G4 – Severe geomagnetic storm after CME produced by X4.5 solar flare impacts Earth
The coronal mass ejection (CME) produced by the X4.5 solar flare on September 14, 2024, hit the Earth’s magnetic field at 23:29 UTC on September 16, sparking G4 – Severe geomagnetic storm. This was the fifth strongest solar flare of Solar Cycle 25.
Major X4.5 solar flare erupts from AR 3825, producing Earth-directed CME
A major solar flare measuring X4.5 erupted from Active Region 3825 at 15:29 UTC on September 14, 2024. The event started at 15:13 and ended at 15:47 UTC. This is the fifth strongest solar flare of Solar Cycle 25.
