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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
19 APR-20 APR QUIET STORM G1
20 APR-21 APR QUIET ACTIVE
21 APR-22 APR 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)
16 APR-17 APR ACTIVE STORM G1 06:00-09:00 ACTIVE STORM G1 03:00-09:00
17 APR-18 APR ACTIVE STORM G1 12:00-15:00 ACTIVE STORM G1 12:00-15:00
18 APR-19 APR QUIET ACTIVE 21:00-00:00 QUIET ACTIVE 21:00-00:00

Additional Comments

Solar wind stream speeds are currently elevated due to coronal hole influence, which caused some STORM G1 geomagnetic conditions over the weekend. This is expected to decline gradually over the course of this forecast period.
Geomagnetic activity is expected to be QUIET to unsettled but with the possibility of STORM G1 periods during the first forecast interval. ACTIVE spells could still be possible into the second and third forecast interval as coronal hole influence slowly wanes.
Time of forecast: 19 Apr 2021
© UKRI 2020