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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT)
Forecast Global Activity level
Average Max
29 MAY-30 MAY QUIET ACTIVE
30 MAY-31 MAY QUIET QUIET
31 MAY-1 JUN QUIET QUIET

For more information about the forecast and activity categories see
www.geomag.bgs.ac.uk/education/activitylevels.html

Activity during last 72 hours

Global   Local (UK)
Date Average Max At time (UT) Average Max At time (UT)
26 MAY-27 MAY QUIET QUIET 12:00-21:00 QUIET QUIET 00:00-03:00
QUIET 00:00-03:00
27 MAY-28 MAY STORM G1 STORM G3 03:00-06:00 STORM G1 STORM G3 03:00-06:00
28 MAY-29 MAY QUIET ACTIVE 12:00-15:00 QUIET QUIET 12:00-15:00

Additional Comments

A coronal mass ejection (CME) associated with a filament eruption on the 23rd arrived on 27th May. This caused an enhancement in geomagnetic activity, with a STORM G3 period observed.
Since the CME arrival, solar wind parameters have been declining and are now almost back to ambient conditions. QUIET conditions are expected to persist throughout the forecast intervals, with a slight chance for an isolated ACTIVE period during the first interval.
Time of forecast: 29 May 2017
© NERC 2015