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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
16 MAY-17 MAY QUIET ACTIVE
17 MAY-18 MAY QUIET ACTIVE
18 MAY-19 MAY QUIET STORM G1

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)
15 MAY-16 MAY QUIET ACTIVE 15:00-18:00 QUIET ACTIVE 15:00-18:00

Additional Comments

Solar wind speeds have been on a declining trend as coronal hole influence has waned. Residual effects may still cause some ACTIVE geomagnetic conditions through the first and second periods.
A high speed stream from a larger southerly coronal is expected to become geo-effective during the third period which is likely to result in further enhanced geomagnetic activity with possible isolated STORM G1 spells.
Time of forecast: 16 May 2025
© UKRI