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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
4 MAY-5 MAY QUIET ACTIVE
5 MAY-6 MAY QUIET QUIET
6 MAY-7 MAY QUIET ACTIVE

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)
1 MAY-2 MAY QUIET ACTIVE 18:00-21:00 QUIET ACTIVE 18:00-21:00
2 MAY-3 MAY QUIET QUIET 21:00-03:00 QUIET QUIET 21:00-03:00
3 MAY-4 MAY QUIET QUIET 15:00-18:00 QUIET QUIET 15:00-18:00

Additional Comments

There are two faint Coronal Mass Ejections (CMEs) from the 30-APR potentially en-route to Earth. Although, confidence is low, a brief encounter is possible in the first interval. A weak enhancement in the solar wind parameters early this morning could be linked to one of these CMEs.
A small positive trans-equatorial coronal hole (CH) is currently crossing the solar central meridian. Compared to its last rotation the CH this time is much smaller. Its high speed stream could arrive as early as the latter half of third interval may cause some ACTIVE periods.
Time of forecast: 04 May 2026
© UKRI