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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
25 APR-26 APR QUIET ACTIVE
26 APR-27 APR QUIET STORM G1
27 APR-28 APR QUIET STORM G1

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)
24 APR-25 APR QUIET ACTIVE 12:00-15:00 QUIET ACTIVE 12:00-15:00

Additional Comments

Solar wind speeds are now declining towards background levels after a small increase due to the arrival of a coronal mass ejection and coronal hole effects. Geomagnetic activity is expected to be QUIET to unsettled over the first interval.
A high-speed stream from the eastern part of the large southern coronal hole is anticipated to become geoeffective over the weekend. This is likely to bring ACTIVE periods, with a chance of geomagnetic activity reaching up to STORM G1 levels.
Time of forecast: 25 Apr 2025
© UKRI