G5 – Extreme geomagnetic storm following strong CME impact

The first set of several incoming coronal mass ejections (CMEs) impacted Earth at around 16:56 UTC…

Solar radiation storm in progress

Proton flux started rising after 07:00 UTC on May 9, 2024, due to increased flare activity…

Major X3.9 solar flare erupts from AR 3664 — the 10th X-class flare in just 7 days

A powerful solar flare measuring X3.9 erupted from Active Region 3664 at 06:54 UTC on May…

G4 – Severe geomagnetic storm expected as multiple CMEs merge and impact Earth on May 11

Multiple coronal mass ejections (CMEs) — of which at least 4 halo CMEs produced by Active…

At least 5 CMEs heading toward Earth, G3 – Strong Geomagnetic Storm Watch in effect for May 11

At least five coronal mass ejections (CMEs) produced over the past 3 days are heading toward…

Long-duration X1.0 solar flare erupts from geoeffective Region 3664, CME impact expected

A major solar flare measuring X1.0 erupted from Active Region 3664 at 05:09 UTC on May…

Major X4.5 solar flare erupts from Region 3663 — fourth X-class flare in 3 days

A powerful, long-duration solar flare measuring X4.5 erupted from Active Region 3663 at 06:35 UTC on…

Major X1.2 solar flare erupts from Region 3663 — second X-class flare of the day

A major solar flare measuring X1.2 erupted from Active Region 3663 (beta-gamma-delta) at 11:54 UTC on…

Major X1.3 solar flare erupts from Region 3663

A major solar flare measuring X1.3 erupted from Active Region 3663 at 06:01 UTC on May…

M9.1 solar flare erupts from geoeffective Region 3663

A very strong solar flare measuring M9.1 erupted from Active Region 3663 at 06:19 UTC on…