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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
25 JUL-26 JUL QUIET ACTIVE
26 JUL-27 JUL QUIET STORM G1
27 JUL-28 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)
24 JUL-25 JUL QUIET ACTIVE 15:00-18:00 QUIET ACTIVE 15:00-18:00

Additional Comments

Solar wind speeds remain elevated but are expected to decline as coronal hole influence wanes.
A CME from a centre solar disc filament eruption early on the 23rd is expected to arrive at Earth during the second period although arrival time in uncertain. This increases the chance of enhanced geomagnetic conditions of up to STORM G1 levels.
Time of forecast: 25 Jul 2025
© UKRI