Warning!

Javascript is disabled on this browser.
Javascript must be enabled for this website to display and function correctly.

BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
29 OCT-30 OCT QUIET ACTIVE
30 OCT-31 OCT ACTIVE STORM G1
31 OCT-1 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)
28 OCT-29 OCT QUIET QUIET 18:00-21:00 QUIET QUIET 18:00-21:00
QUIET 00:00-06:00

Additional Comments

A weak enhancement from the coronal mass ejection (CME) observed on 27 October may increase solar wind speeds during the first forecast interval, however confidence in this is low.
An increase in geomagnetic activity due to the arrival of a coronal hole high-speed stream (HSS) is anticipated in the second forecast interval, 30-31 October.
Should any CME enhancement combine with HSS effects, there is a possibility of activity reaching up to STORM G2 levels, however due to the uncertainty around the CME arrival ACTIVE to STORM G1 levels are more likely.
Time of forecast: 29 Oct 2026
© UKRI