CH HSS sparks G2 – Moderate geomagnetic storm
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.
Global and interplanetary view of the biggest geomagnetic storm in 20 years
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.
CME impacts Earth sparking widespread aurora, G3 – Strong storm Watch in effect for April 16
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.
Large coronal hole facing Earth, G2 – Moderate geomagnetic storm
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 CMEs impact Earth, producing G4 – Severe geomagnetic storm
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.
G3 – Strong geomagnetic storm following CME impact produced by X9.0 solar flare
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.
G4 – Severe geomagnetic storm after CME produced by X4.5 solar flare impacts Earth
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.
Filament eruption produces Earth-directed CME; S1 – Minor solar radiation storm in progres
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.
Study reveals major impacts of G5 – Extreme geomagnetic storm on satellite operations in May 2024
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.
G4 – Severe geomagnetic storm in progress
A coronal mass ejection (CME) produced on June 25, 2024, impacted Earth shortly after 09:30 UTC on June 28, producing G4 – Severe geomagnetic storm.