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
26 AUG-27 AUG QUIET STORM G1
27 AUG-28 AUG ACTIVE STORM G1
28 AUG-29 AUG ACTIVE STORM G2

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)
25 AUG-26 AUG QUIET QUIET 12:00-18:00 QUIET QUIET 03:00-09:00
QUIET 03:00-09:00

Additional Comments

Two coronal mass ejections (CMEs) were observed associated with M6.9 and C4.7 solar flares from the active region in an Earth-facing position. Analysis of these CMEs suggest while the bulk of the ejecta may be directed away from Earth there is a chance of a glancing blow on the 28th August.
From the 27th a high-speed solar wind stream from a coronal hole may bring ACTIVE to STORM G1 conditions. Any glancing blow from the CMEs may continue to elevate geomagnetic conditions throughout the rest of the forecast period.
Time of forecast: 26 Aug 2026
© UKRI