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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
19 OCT-20 OCT QUIET QUIET
20 OCT-21 OCT QUIET STORM G1
21 OCT-22 OCT QUIET ACTIVE

For more information about the forecast and activity categories see
geomag.bgs.ac.uk/education/activitylevels.html

Activity during last 72 hours

Global   Local (UK)
Date Average Max At time (UTC) Average Max At time (UTC)
16 OCT-17 OCT QUIET ACTIVE 18:00-21:00 QUIET ACTIVE 18:00-21:00
17 OCT-18 OCT QUIET QUIET 15:00-21:00 QUIET QUIET 15:00-21:00
18 OCT-19 OCT QUIET QUIET 15:00-21:00 QUIET QUIET 18:00-21:00

Additional Comments

Solar wind parameters are currently at background levels and conditions are expected to remain QUIET on day one.
A high-speed stream from a southern coronal hole (CH) is anticipated to arrive 20-Oct which could enhance geomagnetic activity up to STORM G1.
ACTIVE spells are possible in the third forecast period as CH effects decline.
Time of forecast: 19 Oct 2026
© UKRI