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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
22 JUN-23 JUN QUIET QUIET
23 JUN-24 JUN QUIET QUIET
24 JUN-25 JUN 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)
19 JUN-20 JUN QUIET QUIET 00:00-03:00 QUIET QUIET 00:00-03:00
20 JUN-21 JUN QUIET QUIET 15:00-21:00 QUIET QUIET 18:00-21:00
21 JUN-22 JUN QUIET QUIET 18:00-21:00 QUIET QUIET 00:00-03:00
QUIET 00:00-03:00

Additional Comments

Geomagnetic conditions are currently QUIET and are expected to persist for the first two forecast intervals.
The partial filament lift-off on 19-Jun produced a very faint coronal mass ejection (CME) which has been analysed and will miss Earth.
A high-speed stream from a recurrent southern coronal hole is anticipated to arrive towards the end of the third forecast interval. The onset of the fast solar wind stream is likely to enhance geomagnetic activity further.
There were two M-class flares from an active region in the south-east quadrant on 21-Jun. The largest of these was an M6.8 flare with an associated CME. Initial analysis shows this to be slow and unlikely to cause significant enhancement in geomagnetic activity.
Time of forecast: 22 Jun 2026
© UKRI