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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
21 SEP-22 SEP QUIET QUIET
22 SEP-23 SEP QUIET QUIET
23 SEP-24 SEP 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)
18 SEP-19 SEP QUIET QUIET 03:00-06:00 QUIET QUIET 03:00-06:00
19 SEP-20 SEP QUIET QUIET 03:00-06:00 QUIET QUIET 03:00-06:00
20 SEP-21 SEP QUIET QUIET 21:00-00:00 QUIET QUIET 21:00-00:00

Additional Comments

Solar wind speeds are currently at background levels which is predicted to continue through the first and second forecast periods. A positive polarity coronal hole high speed stream is expected to become geo-effective some time during the third forecast period which may lead to some minor STORM geomagnetic conditions.
Time of forecast: 21 Sep 2026
© UKRI