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2020 Geomagnetic Storms

Posted: August 31st, 2020, 2:24 pm
by Christopher K.
Monday 31 August: G1

A G1 event happens almost never during solar minimum but almost all the time otherwise. There have been 166 spotless days this year, and today is a spotless day. Very often sizable spots accompany G, R and S alerts.

Is Solar Cycle 25 awakening?... ... 311120-utc

Re: 2020 Geomagnetic Storms

Posted: October 20th, 2020, 5:28 pm
by Christopher K.
Thursday 22 October: G1

Tony Phillips recounts NOAA's declaration that a high-speed stream of solar wind may hit the Earth's magnetic field in a couple of days. We'll know soon if there are any effects.

Re: 2020 Geomagnetic Storms

Posted: December 10th, 2020, 3:16 pm
by Christopher K.
Thursday 10 December: G1
Friday 11 December: G1

There was a dire prediction yesterday that the Earth would be staring down a Level 3 Geomagnetic Storm; happily the confrontation did not come to pass. An interplanetary shock from a coronal mass ejection was detected last night at 7:32pm, but there was not the necessary potential for a G3.

More information: ... y-forecast