Very rare S4 – Severe solar radiation storm in progress, G4 – Severe geomagnetic storm forecast

The solar radiation storm intensified rapidly through January 19, reaching S4 – Severe levels at 18:10…

CME impact forecast early January 20 with G4 – Severe or higher storm risk and aurora as low as California

A G4 – Severe or greater geomagnetic storm is forecast for early January 20, 2026, as…

Rare S3 – Strong solar radiation storm in progress after X1.9 flare on January 18

Solar radiation storm produced by a long-duration X1.9 solar flare from Active Region 4341 on January…

Solar radiation storm in progress following long-duration X1.9 flare and Earth-directed CME

Following an X1.9 flare and associated full halo coronal mass ejection (CME) late on January 18,…

Long-duration X1.9 solar flare erupts from Region 4341, Earth-directed CME likely

A long-duration X1.9 solar flare erupted from Active Region 4341 at 18:09 UTC on January 18,…

CME and coronal hole influences cause G1-G2 geomagnetic storming, M3.3 flare erupts beyond solar limb

Solar activity reached moderate levels during the past 24 hours, with a long-duration M3.3 flare from…

Multiple Earth-directed CMEs expected to trigger G1 geomagnetic storm and aurora at high latitudes

Solar activity on January 8, 2026, was characterized by a series of eruptions from Active Region…

Long-duration M7.1 solar flare erupts from AR 4324

A Type IV and Type II (estimated velocity of 893 km/s) radio emissions were associated with…

Earth-directed CME from M4.2 flare forecast to produce G1 geomagnetic storm on New Year’s Day

A coronal mass ejection (CME) produced by an M4.2 solar flare from Active Region 4317 at…

Aurora forecast across northern U.S., southern Canada, and northern Europe on December 9

According to the NOAA’s Space Weather Prediction Center (SWPC), the CME associated with the M8.1 flare…