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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT) 		Forecast Global Activity level
Average Max
28 JUN-29 JUN ACTIVE STORM G2
29 JUN-30 JUN QUIET STORM G1
30 JUN-1 JUL QUIET STORM G1

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)
27 JUN-28 JUN ACTIVE ACTIVE 21:00-06:00 ACTIVE ACTIVE 00:00-03:00
ACTIVE 06:00-09:00

Additional Comments

Overnight the solar wind has been mildly disturbed, possibly due to a glancing blow from a coronal mass ejection (CME), which has led to prolonged periods of negative Bz and ACTIVE geomagnetic conditions. There has also been a shock at around 0900 UT this morning, due to another anticipated CME arrival. This is likely to lead periods of STORM G1 conditions, with a slight chance for G2 throughout the first forecast interval.
Another CME may give a glancing blow during the second forecast interval which is likely to lead to ACTIVE periods, with a slight chance for some isolated STORM G1 periods.
Late yesterday another CME was observed leaving the Sun, mostly headed to the southwest. This may also give a glancing blow during the third forecast interval, extending the likelihood for STORM G1 conditions.
Time of forecast: 28 Jun 2024
© UKRI