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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
30 SEP-1 OCT QUIET QUIET
1 OCT-2 OCT ACTIVE STORM G1
2 OCT-3 OCT 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)
29 SEP-30 SEP QUIET QUIET 21:00-00:00 QUIET QUIET 06:00-09:00

Additional Comments

A coronal mass ejection (CME) seen on 28-SEP associated with a filament lift off is expected to arrive in the second forecast period. Geomagnetic conditions are anticipated to be ACTIVE with chances of STORM G1 intervals. The effects from this CME are expected to gradually decline into the third period.
Another CME associated with an C9-class flare was observed around 02:45UT on 30-Sep. Although further analysis is required, initial analyisis suggests the CME cloud will pass ahead of Earth's orbit.
Time of forecast: 30 Sep 2026
© UKRI