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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
27 SEP-28 SEP QUIET STORM G1
28 SEP-29 SEP QUIET ACTIVE
29 SEP-30 SEP QUIET QUIET

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)
26 SEP-27 SEP ACTIVE STORM G1 12:00-15:00 ACTIVE STORM G1 12:00-15:00

Additional Comments

Solar wind speed is decreasing as influence from the coronal hole high speed-wind stream wanes, but still above the background level. Slower and weaker coronal mass ejections from 22-SEP could produce a glancing blow that may elevate geomagnetic conditions to ACTIVE over the next two forecast intervals, with an outside chance of STORM G1 in the first interval. Geomagnetic conditions will reduce to QUIET levels in forecast interval three.
Time of forecast: 27 Sep 2023
© UKRI