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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
16 APR-17 APR QUIET ACTIVE
17 APR-18 APR ACTIVE STORM G2
18 APR-19 APR ACTIVE STORM G2

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 APR-16 APR QUIET QUIET 15:00-18:00 QUIET QUIET 15:00-18:00

Additional Comments

Solar wind speeds are currently at background levels, and geomagnetic activity has been QUIET. We anticipate the arrival of a high‑speed stream from a coronal hole during the second forecast period, enhancing solar wind speeds and increasing the likelihood of geomagnetic activity up to STORM G2 levels. As this coronal hole is large, its effects are expected to persist into the third forecast period. A south‑directed CME may become geoeffective during the third forecast period; however, this is a low‑probability glancing impact.
Time of forecast: 16 Apr 2026
© UKRI