G1 – Minor geomagnetic storm underway, NOAA forecasts possible G2 conditions

Data from NOAA show the disturbance began when Kp reached 5 during the 03:00–06:00 UTC period,…

G2 – Moderate geomagnetic storm in progress, auroras possible from New York to Washington state

A G2 – Moderate geomagnetic storm is in progress following the arrival of a coronal hole…

Geomagnetic storms possible this weekend as CME from M1.0 solar flare heads toward Earth

A M1.0 solar flare erupted from Active Region 4373 (beta) at 08:58 UTC on February 13.…

Impulsive X4.2 solar flare erupts from geoeffective Active Region 4366

A major X4.2 solar flare erupted from geoeffective Active Region 4366 at 12:13 UTC on February…

X1.5 solar flare erupts from Region 4366, fifth X-class since February 1

An X1.5 solar flare erupted from active region AR 4366, positioned at N14E14, beginning at 13:58…

CME produced by X8.1 flare forecast to reach Earth on February 5, causing G1 geomagnetic storm

Solar activity remained high through February 2 as Region 4366 (beta-gamma-delta) continued to expand and develop…

Major X8.1 solar flare erupts from AR 4366 following explosive growth

Solar activity reached very high levels over the past 36 hours as Region 4366 produced an…

Major X1.0 flare erupts from Region 4366, Earth-directed CMEs possible in days ahead

Solar activity reached major levels on February 1 as Active Region 4366 (N14E40, beta-gamma-delta) produced a…

Rare auroral glow detected within South Atlantic Anomaly during January 19 severe geomagnetic storm

A severe geomagnetic storm developed in Earth’s magnetosphere on January 19, producing widespread auroral emissions at…

CME impact causes G4 – Severe geomagnetic storm, amazing aurora across USA and Europe

The impact of a full halo coronal mass ejection (CME) at Earth on January 19, 2026,…