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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
11 JUN-12 JUN QUIET STORM G1
12 JUN-13 JUN QUIET STORM G1
13 JUN-14 JUN QUIET QUIET

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)
10 JUN-11 JUN QUIET QUIET 06:00-09:00 QUIET QUIET 06:00-09:00

Additional Comments

The solar wind speed is currently at background level and the geomagnetic activity has been QUIET.
A high-speed stream (HSS) from a trans-equatorial coronal hole is expected to arrive during the first forecast period, increasing chances of geomagnetic activity reaching up to STORM G1.
Elevated solar wind speeds associated with this are expected to gradually wane, returning to background levels by the end of the third period.
A coronal mass ejection (CME) was observed leaving the sun shortly after midnight UT today. Further imagery and analysis are needed to assess any impact this may have.
Time of forecast: 11 Jun 2026
© UKRI