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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
17 SEP-18 SEP QUIET ACTIVE
18 SEP-19 SEP QUIET QUIET
19 SEP-20 SEP 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)
16 SEP-17 SEP QUIET QUIET 12:00-15:00 QUIET QUIET 12:00-15:00

Additional Comments

The coronal hole high speed stream (HSS) effects that have been disturbing the solar wind are now beginning to wane, with a return to background levels expected over the first two forecast intervals. There may be a chance of some isolated ACTIVE periods during the first forecast interval before a return to mostly QUIET conditions.
Time of forecast: 17 Sep 2025
© UKRI