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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
7 NOV-8 NOV STORM G1 STORM G3
8 NOV-9 NOV ACTIVE STORM G2
9 NOV-10 NOV ACTIVE 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)
6 NOV-7 NOV ACTIVE STORM G2 03:00-06:00 ACTIVE STORM G2 03:00-06:00

Additional Comments

Geomagnetic activity reached STORM G2 levels overnight due to the high-speed solar wind stream from a coronal hole and a coronal mass ejection (CME) impact early on the 7th.
These coronal hole effects are expected to persist over the next couple of days before gradually waning. A further CME arrival is anticipated over the 7-8th Nov. Geomagnetic activity could reach up to STORM G3 levels if the CME arrival is significant or if we have a sustained period of southward interplanetary magnetic field.
Solar activity remains high with a further long-duration M-class flare with an associated CME along with a filament eruption this morning. Assessment of this event is ongoing but if the CME has an Earth-directed component it may influence the geomagnetic field towards the end of the forecast period.
There is also the potential for further Earth-directed solar activity to occur over the weekend due to the position of a complex active region.
Time of forecast: 07 Nov 2025
© UKRI