A geomagnetic storm that began late on September 14, 2025, intensified to G3 – Strong levels early on September 15, producing auroras visible as far south as Texas. The storm was driven by a negative polarity coronal hole high-speed stream (CH HSS) with possible influence from a coronal mass ejection (CME) launched on September 11.
Elevated geomagnetic activity was recorded on Earth on June 13, 2025, due to the waning effects of a negative polarity coronal hole high-speed stream and possible transient effects.
A G5 – Extreme geomagnetic storm in May 2024 revealed just how far-reaching space weather can be. From subtle shifts in Earth’s upper atmosphere to radiation spikes on Mars, the event challenged infrastructure, disrupted systems, and gave scientists an enormous archive of data.
A coronal mass ejection produced by a filament eruption on April 13 impacted Earth’s magnetic field at 16:37 UTC on April 15, sparking a G2 – Moderate geomagnetic storm. A G3 – Strong geomagnetic storm watch is in effect for April 16 due to the anticipated arrival of additional CMEs.
Earth is currently experiencing heightened solar wind conditions and geomagnetic storming due to the passage of a co-rotating interaction region (CIR) ahead of a high-speed stream from a large coronal hole in the southern hemisphere.
Two coronal mass ejections (CMEs) produced on December 29, 2024, impacted Earth on December 31, causing G4 – Severe geomagnetic storm on January 1, 2025. A slow return to nominal levels is expected by late on January 2. Late on January 3 to early on January 4, a potential glancing blow from the January 1 CME is likely to cause another enhancement.
The coronal mass ejection (CME) produced by the X9.0 solar flare on October 3, 2024, impacted Earth around 07:30 UTC on October 6, elevating solar wind parameters.
The coronal mass ejection (CME) produced by the X4.5 solar flare on September 14, 2024, hit the Earth’s magnetic field at 23:29 UTC on September 16, sparking G4 – Severe geomagnetic storm. This was the fifth strongest solar flare of Solar Cycle 25.
Early on Sunday, September 8, 2024 (UTC), a magnetic filament erupted from the Sun’s northwest quadrant (N16W22), releasing an Earth-directed coronal mass ejection (CME). The CME is expected to impact Earth on September 10, potentially triggering a G2 – Moderate geomagnetic storm. Concurrently, heightened activity near the Sun’s west limb has caused a sharp increase in proton levels, resulting in an S1 – Minor solar radiation storm at 08:50 UTC today.
Researchers from the Massachusetts Institute of Technology (MIT) investigated the significant impacts and scientific insights from the May 2024 G5 – Extreme geomagnetic storm and how it impacted satellite operations and atmospheric activities.
