A coronal mass ejection (CME) associated with an M4.2 solar flare from Region 4317 is expected to produce a G1 – Minor geomagnetic storm as it grazes Earth late on December 31 into early January 1, 2026.
A G1 – Minor Geomagnetic Storm Watch was issued by NOAA’s Space Weather Prediction Center for September 14, 2025, anticipating weak power grid fluctuations, minor satellite impacts, and possible auroras at high latitudes. No storm activity is forecast for September 15 and 16.
A G1 – Minor geomagnetic storm watch is in effect for January 31 and February 1, 2025, due to a coronal hole high-speed stream (CH HSS) influence coupled with the potential arrival of a CME.
A major solar flare measuring X1.1 erupted from Active Region (AR) 3947 at 22:41 UTC on January 3, 2025. The event started at 22:32 and ended at 22:51 UTC. This is the second X-class solar flare produced on January 3 — both from AR 3947. Meanwhile, CME produced on January 1 impacted Earth early January 4, sparking G1 – Minor geomagnetic storm.
A coronal mass ejection (CME) produced on December 13, 2024, impacted Earth at 05:19 UTC on December 17, sparking G1 – Minor geomagnetic storming. The K-index reached 5 at 08:07 UTC, with effects limited to areas poleward of 60 degrees geomagnetic latitude. Enhanced solar wind conditions, driven by a positive polarity coronal hole high-speed stream (CH HSS), are expected to continue through December 18. Meanwhile, solar activity remains low, with a 30-40% chance of M-class flares and a 5% chance of X-class flares through December 19.
A strong positive polarity coronal hole high speed stream (CH HSS) sparked a G2 – Moderate geomagnetic storm on September 4, 2022. G1-Minor storms continued into September 5. An additional enhancement is possible by midday today due to the arrival of CME produced on September 2.
Earth is under the influence of multiple positive polarity coronal hole high speed solar streams (CH HSS), triggering G2 – Moderate geomagnetic storming.
Coronal mass ejection (CME) produced by a long-duration C5.6 solar flare on July 21, 2022, hit Earth’s magnetic field at 02:59 UTC on July 23, 2022, sparking G1 – Minor geomagnetic storm.
A long-duration C5.6 solar flare erupted from Active Region 3060 at 01:11 UTC on July 21, 2022, generating an impressive Earth-directed coronal mass ejection (CME).
A G1-Minor geomagnetic storm watch is in effect for July 21, 22 and 23, 2022 as a result of slow-moving coronal mass ejection (CME) coupled with negative polarity coronal hole high speed stream (CH HSS).
