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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
12 JUN-13 JUN QUIET STORM G1
13 JUN-14 JUN QUIET ACTIVE
14 JUN-15 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)
11 JUN-12 JUN QUIET STORM G1 18:00-21:00 QUIET ACTIVE 18:00-21:00

Additional Comments

Solar wind speeds are currently elevated due to the high-speed stream (HSS) from a coronal hole. The impacts of this will continue throughout the first forecast period, likely causing isolated STORM G1 intervals.
Wind speeds are expected to slowly wane in the second forecast period, with mostly QUIET and a chance of some ACTIVE conditions.
A coronal mass ejection (CME) observed on the 11th June could arrive towards the end of the forecast, increasing geomagnetic activity up to STORM G1.
Time of forecast: 12 Jun 2026
© UKRI