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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
5 NOV-6 NOV QUIET ACTIVE
6 NOV-7 NOV ACTIVE STORM G2
7 NOV-8 NOV ACTIVE STORM G2

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)
4 NOV-5 NOV QUIET ACTIVE 00:00-03:00 QUIET STORM G1 00:00-03:00

Additional Comments

Solar activity has been high overnight with two X-class solar flares, along with a M-class flare. These flares have each had associated coronal mass ejections (CME). While the bulk of the ejecta from the CMEs are likely to miss Earth there is the potential for some component of these to reach Earth.
A CME from the 3rd is already in the forecast, potentially arriving on the 6th. Further CME impacts may also arrive on the 7th and 8th.
Additionally, a high-speed solar wind stream from a coronal hole is expected to arrive from the 7th. The combination of coronal hole effects and various CME impacts means that geomagnetic activity is likely to be disturbed, potentially reaching STORM G2.
The active regions which produced the X-class flares and CMEs are rotating around toward an Earth-facing position. There is the potential for further CMEs and resultant geomagnetic activity over the next week or two if solar activity remains high.
Time of forecast: 05 Nov 2025
© UKRI