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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
9 JAN-10 JAN QUIET STORM G1
10 JAN-11 JAN QUIET STORM G1
11 JAN-12 JAN 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)
8 JAN-9 JAN QUIET ACTIVE 00:00-03:00 QUIET ACTIVE 21:00-00:00

Additional Comments

Solar wind speed has increased as the expected Coronal Hole High Speed Stream has become geofective, however geomagnetic activity has been muted and the solar wind is already showing signs of starting to decline. Occasional ACTIVE periods may still be possible over the next couple of days, with perhaps a slight chance it could peak briefly at STORM G1 but this is thought to be a low probability, as Coronal Hole influence wanes.
There have been a number of weak CMEs over the past few days which appear to be mostly missing Earth, although there remains a small possibility of a weak glance but these are unlikely to be significant. A more significant CME associated with a filament eruption has been analysed and it appears that while the bulk of the material is not Earth-directed a glance is possible on the 11th, either later in the second forecast interval, or possibly early on day three. This has the potential to bring some ACTIVE periods with a chance it could peak at STORM G1.
Time of forecast: 09 Jan 2026
© UKRI