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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
21 JUL-22 JUL QUIET STORM G1
22 JUL-23 JUL QUIET STORM G1
23 JUL-24 JUL QUIET ACTIVE

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)
20 JUL-21 JUL QUIET QUIET 03:00-06:00 QUIET ACTIVE 03:00-06:00

Additional Comments

A high speed solar wind stream has begun to enhance the solar wind during the last few hours, with speeds and magnetic field strength increasing. Periods of ACTIVE geomagnetic conditions are likely, with an increasing chance for STORM G1 periods, throughout the first and second forecast intervals.
The coronal mass ejections mentioned in yesterday's forecast are not expected to become geoeffective.
Time of forecast: 21 Jul 2026
© UKRI