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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
24 AUG-25 AUG QUIET QUIET
25 AUG-26 AUG QUIET QUIET
26 AUG-27 AUG QUIET STORM G1

For more information about the forecast and activity categories see
geomag.bgs.ac.uk/education/activitylevels.html

Activity during last 72 hours

Global   Local (UK)
Date Average Max At time (UTC) Average Max At time (UTC)
21 AUG-22 AUG QUIET QUIET 21:00-00:00 QUIET QUIET 21:00-00:00
22 AUG-23 AUG QUIET QUIET 15:00-18:00 QUIET QUIET 15:00-18:00
QUIET 03:00-09:00 QUIET 03:00-09:00
23 AUG-24 AUG QUIET QUIET 00:00-03:00 QUIET QUIET 00:00-03:00

Additional Comments

The solar wind speed has trended back toward background levels as the influence of a coronal hole waned over the weekend.
Solar activity has been low, and there have been no Earth-directed coronal mass ejections.
High-speed solar wind from a centrally located coronal hole is expected to begin to arrive towards the end of the third forecast period. This could bring ACTIVE to STORM G1 periods from late on the 26th or into the 27th August.
Time of forecast: 24 Aug 2026
© UKRI