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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
26 NOV-27 NOV QUIET STORM G1
27 NOV-28 NOV QUIET ACTIVE
28 NOV-29 NOV QUIET QUIET

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)
25 NOV-26 NOV ACTIVE ACTIVE 15:00-18:00 ACTIVE ACTIVE 15:00-18:00

Additional Comments

Solar wind speed remains elevated due to two coronal holes, increasing the likelihood of isolated minor storm intervals (STORM G1). This probability will decline as wind speed decreases, with activity gradually reducing through the first and second forecast periods.
By the final forecast period, solar wind speeds are expected to return to background levels, resulting in a QUIET geomagnetic environment.
Time of forecast: 26 Nov 2025
© UKRI