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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
18 SEP-19 SEP QUIET ACTIVE
19 SEP-20 SEP QUIET QUIET
20 SEP-21 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)
17 SEP-18 SEP QUIET QUIET 12:00-15:00 QUIET QUIET 18:00-21:00

Additional Comments

Solar wind speeds are slightly elevated but are on a slow declining trend. This declining trend should continue through the first forecast period as coronal hole influence wanes. There is a small outside chance of an isolated ACTIVE spell but predominantly QUIET geomagnetic conditions are expected.
Time of forecast: 18 Sep 2026
© UKRI