Overview

• NOAA and NASA forecast the impact late on September 1, with models calling for Kp to rise above 6 and the strongest activity overnight into September 2.
• The disturbance stems from a faster coronal mass ejection overtaking a slower one after an M2.7 flare on August 30, creating a denser, magnetically stronger burst.
• Bright auroras were reported and further displays were forecast at lower latitudes than usual across parts of North America, Europe and Asia.
• Utilities in high‑latitude regions placed grids on alert for voltage fluctuations as satellite operators tracked increased atmospheric drag and potential communication disruptions.
• Forecasters warned of possible GPS errors and HF radio issues, noting that such events may grow more frequent as Solar Cycle 25 approaches its maximum.