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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
3 APR-4 APR QUIET QUIET
4 APR-5 APR QUIET ACTIVE
5 APR-6 APR 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)
2 APR-3 APR QUIET ACTIVE 18:00-03:00 QUIET ACTIVE 18:00-21:00

Additional Comments

The solar wind speed is currently at background levels, and we expected it to remain low until the High Speed Stream (HSS) from a recurrent trans-equatorial coronal hole (CH28) becomes geoeffective, at the end of the second period. Once the solar wind speed is enhanced by the HSS it will slowly decay throughout the weekend, likely reaching background levels by Monday 7th April.
The influence of CH28 may be enhanced due to the negative polarity of the coronal hole and the orientation of Earth's dipole during the spring equinox, so we cannot rule out a minor storm interval (STORM G1) during the second period.
Time of forecast: 03 Apr 2025
© UKRI