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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
23 SEP-24 SEP QUIET ACTIVE
24 SEP-25 SEP QUIET ACTIVE
25 SEP-26 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)
22 SEP-23 SEP QUIET ACTIVE 12:00-15:00 QUIET ACTIVE 12:00-15:00
ACTIVE 21:00-03:00 ACTIVE 00:00-03:00

Additional Comments

The Earth remains under the influence of a coronal hole high speed stream. As this persists brief ACTIVE geomagnetic activity is possible over the first 2 forecast intervals.
Solar wind speeds are then expected to greadually decline with ambient conditions returning during the third interval.
Time of forecast: 23 Sep 2025
© UKRI