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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
23 OCT-24 OCT QUIET QUIET
24 OCT-25 OCT QUIET ACTIVE
25 OCT-26 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)
22 OCT-23 OCT QUIET ACTIVE 12:00-21:00 QUIET ACTIVE 12:00-15:00
ACTIVE 18:00-21:00

Additional Comments

Conditions are expected to be QUIET on day one before activity potentially increases in the second and third forecast intervals.
A high-speed stream from a new coronal hole (CH) may cause some enhancement on day two with some ACTIVE spells possible.
Coronal mass ejections (CMEs) observed on 21-Oct are expected to mostly miss Earth, although there is the potential for a glancing blow on 25-Oct. Combined with any CH influence there is a chance this could elevate geomagnetic activity up to STORM G1.
Time of forecast: 23 Oct 2026
© UKRI