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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
27 MAR-28 MAR ACTIVE STORM G2
28 MAR-29 MAR ACTIVE STORM G1
29 MAR-30 MAR 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)
26 MAR-27 MAR STORM G1 STORM G2 18:00-21:00 STORM G1 STORM G2 15:00-18:00

Additional Comments

Coronal hole high speed stream effects are expected to keep geomagnetic activity at elevated levels during the first two forecast intervals, with further chances of STORM G1/G2 periods.
Possible glancing effects from coronal mass ejections (CMEs) observed on 25-Mar and 26-Mar might result in additional ACTIVE periods during the last forecast interval.
Time of forecast: 27 Mar 2025
© UKRI