Coronal hole faces Earth

Monday, 11 September 2017 23:01 UTC

Coronal hole faces Earth

A southern extension of the northern hemisphere polar coronal hole is facing our planet today. It is the same coronal hole that caused minor G1 geomagnetic storm conditions for four days last month.

The coronal hole solar wind stream is expected to arrive this Wednesday (13 September) and the NOAA SWPC has issued a moderate G2 geomagnetic storm watch for that date. A minor G1 geomagnetic storm watch is in effect for this Thursday, 14 September.

Any mentioned solar flare in this article has a scaling factor applied by the Space Weather Prediction Center (SWPC), the reported solar flares are 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.

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