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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
2 JAN-3 JAN STORM G1 STORM G3
3 JAN-4 JAN ACTIVE STORM G1
4 JAN-5 JAN QUIET STORM G1

For more information about the forecast and activity categories see
geomag.bgs.ac.uk/education/activitylevels.html

Activity during last 24 hours

Global   Local (UK)
Date Average Max At time (UTC) Average Max At time (UTC)
1 JAN-2 JAN QUIET ACTIVE 03:00-06:00 QUIET ACTIVE 03:00-06:00

Additional Comments

The ongoing coronal hole high-speed stream effects will start to slowly diminish over the next 24 hours.
The arrival of a coronal mass ejection (CME) from 31-Dec is expected during the first forecast interval, resulting in increased geomagnetic activity with slight chances of brief STORM G3 periods.
An additional CME observed on 01-Jan may bring some glancing effects during the weekend and keep the geomagnetic conditions at elevated levels.
Time of forecast: 02 Jan 2026
© UKRI