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
24 JUN-25 JUN QUIET ACTIVE
25 JUN-26 JUN QUIET ACTIVE
26 JUN-27 JUN 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)
23 JUN-24 JUN QUIET QUIET 12:00-18:00 QUIET ACTIVE 15:00-18:00
QUIET 09:00-12:00

Additional Comments

Solar wind velocity has started to increase over the last 24 hours due to the onset of the recurrent southern coronal hole (CH) stream. Further ACTIVE intervals are possible on day one and two before a transition into the next CH stream.
This second high-speed stream (HSS) is from a trans-equatorial CH and is expected to arrive in the third forecast period. This may lead to further enhancement in geomagnetic activity up to STORM G1.
Time of forecast: 24 Jun 2026
© UKRI