Warning!

Javascript is disabled on this browser.
Javascript must be enabled for this website to display and function correctly.

BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
20 APR-21 APR QUIET STORM G1
21 APR-22 APR QUIET ACTIVE
22 APR-23 APR QUIET QUIET

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)
17 APR-18 APR ACTIVE STORM G2 06:00-09:00 ACTIVE STORM G1 06:00-12:00
18 APR-19 APR ACTIVE STORM G2 06:00-09:00 ACTIVE STORM G1 21:00-00:00
STORM G1 06:00-09:00
19 APR-20 APR QUIET ACTIVE 06:00-09:00 QUIET STORM G1 06:00-09:00

Additional Comments

Solar wind speed remains somewhat elevated due to ongoing coronal hole influence but this is likely to decline over the next few days. A potential CME was observed yesterday, however it looks unlikely to have any significant Earth-directed component and is though to be unlikely to produce any further geomagnetic enhancement should there be even a weak glance.
Overall, geomagnetic activity is expected to be QUIET overall for the next few days, with a reducing chance of some occasional ACTIVE periods as the week progresses. There remains a small chance it could peak briefly at STORM G1 on day one due to coronal hole effects.
Time of forecast: 20 Apr 2026
© UKRI