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BGS Global Geomagnetic Activity Forecast

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

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)
24 NOV-25 NOV ACTIVE STORM G1 03:00-06:00 ACTIVE STORM G1 03:00-06:00

Additional Comments

We are currently under the influence of a High-Speed Stream (HSS) originated from trans-equatorial and southern coronal holes (CH98 and CH99).
We expect this activity to persist throughout most of the first forecast period, begin to decrease during the second forecast period, and return to background levels by the end of this forecast.
Time of forecast: 25 Nov 2025
© UKRI