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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
28 JUL-29 JUL QUIET QUIET
29 JUL-30 JUL QUIET STORM G1
30 JUL-31 JUL 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)
25 JUL-26 JUL QUIET QUIET 21:00-00:00 QUIET QUIET 15:00-18:00
26 JUL-27 JUL QUIET ACTIVE 15:00-18:00 QUIET ACTIVE 15:00-18:00
27 JUL-28 JUL QUIET QUIET 15:00-21:00 QUIET QUIET 03:00-06:00
QUIET 03:00-06:00

Additional Comments

A coronal hole high speed stream may become geoeffective during the second forecast interval which could bring periods of ACTIVE geomagnetic conditions with a chance of STORM G1 periods. Coronal hole effects are likely to continue into the third forecast interval, before beginning to wane towards the end of the interval.
Time of forecast: 28 Jul 2025
© UKRI