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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
2 OCT-3 OCT QUIET STORM G1
3 OCT-4 OCT QUIET STORM G1
4 OCT-5 OCT ACTIVE 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)
1 OCT-2 OCT QUIET QUIET 21:00-00:00 QUIET QUIET 21:00-00:00

Additional Comments

Geomagnetic activity is currently at QUIET levels. The anticipated coronal mass ejection (CME) is yet to make an impact and it's either travelling slower than expected which lessens the likelihood of a significant impact or it may have missed.
A high-speed stream from a large trans-equatorial coronal hole (CH) is expected to reach the Earth on or around 4-OCT, enhancing geomagnetic activity from the 2nd interval onward.
There is a possibility of STORM G1 periods througout the forecast, due to any potential CME glance followed by CH high-speed stream effects.
Time of forecast: 02 Oct 2026
© UKRI