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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
1 MAY-2 MAY QUIET ACTIVE
2 MAY-3 MAY QUIET QUIET
3 MAY-4 MAY 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)
30 APR-1 MAY QUIET STORM G1 21:00-00:00 QUIET ACTIVE 21:00-00:00

Additional Comments

Solar wind speed remains elevated due to ongoing Coronal Hole influence, which is likely to persist for the next day. Geomagnetic activity is expected to be QUIET on average, with a chance of some occasional ACTIVE periods, and we cannot rule out a very slight chance that it could peak briefly at STORM G1 on day one, before declining to background levels.
A re-current northern coronal hole is currently in Earth-facing position, but appears to be too far north to have any significant effect on geomagnetic activity, although a brief ACTIVE spell on day three is possible.
LASCO and STEREO imagery seems to indicate a presence of a CME on 30-APR, with a possible Earth-directed component, however there isn't a clear source attributed to this and analysis is ongoing.
Time of forecast: 01 May 2026
© UKRI