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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
24 JUL-25 JUL QUIET ACTIVE
25 JUL-26 JUL QUIET ACTIVE
26 JUL-27 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)
23 JUL-24 JUL ACTIVE STORM G1 15:00-21:00 ACTIVE STORM G2 18:00-21:00

Additional Comments

Solar wind speeds remain elevated due to ongoing coronal hole effects, but are expected to gradually decline throughout the first forecast interval. The anticipated glancing blow from a coronal mass ejection (CME) that left the Sun on 21st July does not appear to have arrived. It is possible it has missed, but there may still be a slight chance of an arrival today. Geomagnetic conditions are likely to remain mostly QUIET but there is a chance for some ACTIVE periods whilst the solar wind remains above background levels.
A filament eruption was observed early this morning, which appears to have an associated CME. There are limited data available for analysis, but early indications suggest there may be an Earth-directed component. It is possible that this could arrive late in the third forecast interval and could enhance geomagnetic activity.
Time of forecast: 24 Jul 2026
© UKRI