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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
23 JAN-24 JAN ACTIVE STORM G1
24 JAN-25 JAN QUIET ACTIVE
25 JAN-26 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)
22 JAN-23 JAN ACTIVE STORM G1 21:00-00:00 ACTIVE STORM G2 21:00-00:00

Additional Comments

The Interplanetary Magnetic Field (IMF) Bz component turned negative from around 19:00 UT on 22-Jan onward, with solar wind speed hovering 500 - 550km/s lead to ACTIVE geomagnetic conditions on average with a brief STORM G1 globally, and a short spell of G2 locally in the UK. Similar activity is likely in the next 24 hours due to residual coronal hole effects that were initially masked by the strong CME influence earlier in the week.
The Earth may receive a glancing blow from a faint CME from a centre-disk filament eruption on 22-JAN. Although confidence is low, this might result in some enhanced conditions of up to STORM G1 in the third interval.
Time of forecast: 23 Jan 2026
© UKRI