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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
30 OCT-31 OCT ACTIVE STORM G1
31 OCT-1 NOV QUIET STORM G1
1 NOV-2 NOV QUIET ACTIVE

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 OCT-30 OCT ACTIVE STORM G1 21:00-00:00 ACTIVE STORM G1 21:00-00:00
STORM G1 06:00-09:00

Additional Comments

Ongoing coronal hole effects will most likely keep the geomagnetic conditions at elevated levels during the first forecast interval. Another high-speed stream is expected to arrive during the second or third interval increasing the chances of further ACTIVE periods.
A filament eruption with associated coronal mass ejection (CME) was observed around 01:00UT on 29-Oct which may result in a glancing blow over the coming days, however confidence is low.
Time of forecast: 30 Oct 2025
© UKRI