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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
10 DEC-11 DEC QUIET STORM G1
11 DEC-12 DEC QUIET ACTIVE
12 DEC-13 DEC QUIET ACTIVE

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)
9 DEC-10 DEC QUIET QUIET 06:00-09:00 QUIET QUIET 06:00-09:00

Additional Comments

The passing of the coronal mass ejection (CME) from 06-Dec did not cause the anticipated high level of geomagnetic disturbance, with only minimal increase in activity in the last 24 hours.
Several CMEs observed leaving the Sun between 08-Dec and 09-Dec, although not fully Earth-directed, may cause some glancing impacts in the coming days, increasing the chances of ACTIVE and STORM G1 periods.
Time of forecast: 10 Dec 2025
© UKRI