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BGS Global Geomagnetic Activity Forecast

Forecast period
(noon-to-noon GMT)
Forecast Global Activity level
Average Max
28 MAR-29 MAR ACTIVE STORM G2
29 MAR-30 MAR ACTIVE STORM G1
30 MAR-31 MAR QUIET ACTIVE

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

Activity during last 24 hours

Global   Local (UK)
Date Average Max At time (UT) Average Max At time (UT)
27 MAR-28 MAR STORM G1 STORM G2 18:00-21:00 STORM G1 STORM G3 18:00-21:00

Additional Comments

The arrival of a high speed stream from a large coronal hole brought global periods of STORM G2 and a local period of STORM G3 yesterday.
Although the interplanetary magnetic field (IMF) strength has weakened, the solar wind speed remains elevated at over 700km/s. Further periods of STORM G1 are therefore possible, with a chance for occasional STORM G2 periods.
There have been C-class solar flares in the last 24 hours but none appear to be associated with Earth-directed coronal mass ejections and so are not expected to have any impact on geomagnetic activity.
Time of forecast: 28 Mar 2017
© NERC 2015