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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
16 JUN-17 JUN QUIET STORM G1
17 JUN-18 JUN QUIET STORM G1
18 JUN-19 JUN QUIET STORM G1

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)
13 JUN-14 JUN STORM G1 STORM G2 21:00-00:00 STORM G1 STORM G2 21:00-00:00
14 JUN-15 JUN QUIET ACTIVE 15:00-18:00 QUIET ACTIVE 15:00-18:00
15 JUN-16 JUN QUIET ACTIVE 06:00-09:00 QUIET ACTIVE 06:00-09:00

Additional Comments

Solar wind speed is currently slightly elevated, with further increase expected during this forecast period, due to the influence of a large coronal hole located in the southern part of the solar disk.
Three coronal mass ejections (CMEs) associated with M-class flares were observed on the 15th and 16th June, none of which are believed to be fully Earth-directed, however chances of glancing effects are possible.
Overall QUIET geomagnetic conditions are expected throughout the forecast, with ACTIVE and STORM G1 periods anticipated.
Time of forecast: 16 Jun 2025
© UKRI