CME impacts Earth, producing G3 – Strong geomagnetic storming
A coronal mass ejection (CME) produced by filament eruption on August 2, 2023, combined with a smaller CME produced on August 1 and reached our planet at 02:53 UTC on August 5.
CIR/CH HSS impact produces G2 – Moderate geomagnetic storming
Co-rotating interaction region (CIR) followed by negative polarity coronal hole high speed stream (CH HSS) produced G1 – Minor and G2 – Moderate geomagnetic storming on Earth on June 15 and 16, 2023.
CME impacts Earth sparking G4 – Severe geomagnetic storm, worldwide aurora
A full-halo coronal mass ejection (CME) produced by an Earth-facing filament eruption on April 21, 2023, impacted Earth at 17:37 UTC on April 23. The impact sparked G4 – Severe geomagnetic storm and produced vivid aurora worldwide.
Red auroras descend to Florida, marking first sighting since 2003 and 1989
A G4 – Severe geomagnetic storm on March 24, 2023, caused red auroras to appear over Florida and other low-latitude areas, marking the first such sighting over Florida in nearly 20 years. Numerous unusual phenomena were observed during this geomagnetic storm, including “aurora dunes” over Alberta, Canada.
Unexpected G4 – Severe geomagnetic storm
A combination of factors led to unexpectedly strong geomagnetic storm levels on Thursday, March 23, and Friday, March 24, 2023. The storm reached G3 – Strong levels at 14:49 UTC on March 23 and escalated to G4 – Severe at 04:04 UTC on March 24. The precise cause of this geomagnetic storm is still under investigation, but it is possible that coronal mass ejections (CMEs) from March 20 to 21 played a role.
G2 – Moderate geomagnetic storming due to CH HSS effects combined with CME
Our planet is under the influence of a positive polarity coronal hole high speed stream (CH HSS) today, March 15, 2023, combined with an impact from the coronal mass ejection (CME) produced on March 10. G2 – Moderate geomagnetic storm threshold was reached at 05:59 UTC and the geomagnetic field is likely to reach G1 – Minor geomagnetic storming levels, with a chance for isolated G2 – Moderate periods on March 15 and 16 due to any flanking effects from CMEs produced on March 11 to 13.
CME impacts Earth, sparking G3 – Strong geomagnetic storm
Coronal mass ejection (CME) produced by a long-duration M3.7 solar flare at 20:30 UTC on February 24, 2023, reached Earth at 19:25 UTC on February 26. A glancing blow impact from CME produced by M6.3 solar flare on February 25 is expected during the afternoon hours on February 27. The resulting geomagnetic storm activity is expected to be significant, with both CMEs interacting with a negative-polarity coronal hole high-speed stream, potentially producing G3 – Strong or higher levels of geomagnetic storming.
Strong positive polarity CH HSS sparks G2 – Moderate geomagnetic storm
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.
G3 – Strong geomagnetic storm watch
A series of coronal mass ejections (CMEs) produced on August 14 and 15, 2022 are expected to couple with a recurrent, negative polarity coronal hole high speed stream (CH HSS), sparking G1 – Minor to G3 – Strong geomagnetic storming through August 19.
Positive polarity coronal hole high speed solar stream sparks G2 – Moderate geomagnetic storming
Earth is under the influence of multiple positive polarity coronal hole high speed solar streams (CH HSS), triggering G2 – Moderate geomagnetic storming.