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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
13 MAR-14 MAR ACTIVE STORM G1
14 MAR-15 MAR QUIET STORM G1
15 MAR-16 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)
12 MAR-13 MAR QUIET ACTIVE 03:00-06:00 QUIET ACTIVE 00:00-03:00
ACTIVE 09:00-12:00

Additional Comments

Solar wind parameters are indicative of the arrival of the co-rotating interactive region (CIR) overnight, ahead of a coronal hole high speed stream. We expect geomagnetic activity to intensify during the first interval with the onset of the high-speed solar wind stream from a coronal hole.
A large filament erupted with an associated coronal mass ejection (CME) late on the 12-MAR. Current analysis shows this CME will miss Earth. However if the CME has an Earth-directed component it may influence the geomagnetic field towards the end of the forecast period, on the 16-MAR, but this has low confidence and any impact it is likely to be weak.
Time of forecast: 13 Mar 2026
© UKRI