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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
18 FEB-19 FEB QUIET STORM G1
19 FEB-20 FEB QUIET STORM G1
20 FEB-21 FEB 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)
17 FEB-18 FEB QUIET QUIET 21:00-00:00 QUIET QUIET 15:00-18:00
QUIET 03:00-06:00 QUIET 21:00-00:00

Additional Comments

Although the coronal hole high-speed stream effects are now starting to gradually decline, further chances of brief STORM G1 intervals are stil anticipated during the first two forecast periods.
A glancing blow from a coronal mass ejection observed around 12:30 UT on 16-Feb may also contribute to increased geomagnetic activity over the next couple of days.
Time of forecast: 18 Feb 2026
© UKRI