A G3 – Strong geomagnetic storm developed late on March 20 into early March 21, 2026, after a coronal mass ejection that left the Sun on March 18 impacted Earth. The storm intensified after at least two CME arrivals, with solar wind speeds reaching 567 km/s and the interplanetary magnetic field turning strongly southward to −28 nT.
An Earth-directed coronal mass ejection (CME) produced by an M2.7 solar flare on March 16, 2026, is expected to impact Earth on March 19, producing G2 – Moderate geomagnetic storming and aurora at mid-latitudes.
A moderately strong solar flare measuring M2.7 erupted from Active Region 4392 at 12:15 UTC on March 16, 2026. The event lasted 24 minutes.
A G1 – Minor geomagnetic storm is in progress on February 22, 2026, with Kp index values reaching 5 since 03:00 UTC, according to the NOAA Space Weather Prediction Center (SWPC). At 08:00 UTC, the agency issued a G2 – Moderate warning valid through 15:00 UTC, forecasting a possible rise to Kp 6 later in the day as solar-wind conditions remain elevated.
A positive polarity coronal hole high speed stream currently interacting with Earth’s magnetic field produced a G2 – Moderate geomagnetic storm, with the K-index peaking at 6 at 20:00 UTC on February 16, 2026. The storm may generate visible aurora across northern U.S. latitudes and cause minor operational effects in satellite and power systems.
An M1.0 solar flare erupted from Active Region 4373 at 08:58 UTC on February 13, 2026, launching a coronal mass ejection (CME) expected to glance Earth around February 15–16. SWPC forecasts G1 – Minor to isolated G2 – Moderate geomagnetic storm conditions as the CME interacts with a co-rotating interaction region and a positive-polarity coronal-hole high-speed stream.
An impulsive X4.2 solar flare erupted from geoeffective Active Region 4366 at 12:13 UTC on February 4, 2026. The flare originated from a magnetically complex beta-gamma-delta region that produced dozens of M- and 5 other X-class flares since February 1. Its location near the central solar disk raises the possibility of Earth-directed coronal mass ejections (CMEs) this week.
An X1.5 solar flare erupted from AR 4366 at 14:08 UTC on February 3, 2026, the fifth X-class event recorded since February 1. The flare caused an R3-level radio blackout over daylight regions of Earth, affecting HF communication across the Atlantic and parts of Europe and Africa.
A coronal mass ejection (CME) associated with an X8.1 solar flare from Region 4366 at 23:57 UTC on February 1 is forecast to glance Earth late on February 5, 2026. The impact is expected to produce G1 – Minor geomagnetic storm conditions and possible auroral activity poleward of 60 degrees Geomagnetic Latitude. This was the third-strongest solar flare of Solar Cycle 25.
A major X8.1 solar flare erupted from Active Region 4366 at 23:57 UTC on February 1, 2026, following rapid magnetic expansion and intense flaring throughout the day. The region also produced an X1.0 flare at 12:33 UTC on February 1 and an X2.8 event at 00:36 UTC and an X1.6 at 08:14 UTC on February 2, accompanied by more than 20 M-class flares since 02:00 UTC on February 1.
