• 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.