Another round of beautiful aurora may grace our high-latitude skies later this week thanks to a moderately strong solar flare that lashed out from the sun on Monday morning.
Now heading toward a solar minimum, the sun has been in a relatively quiet period until today when sunspot 2449 erupted in a moderately strong M-class solar flare. Flares of this size have the potential to cause radio-blackouts here on Earth within less than an hour.
The solar flare’s associated coronal mass ejection, or CME, does not appear to be headed straight for Earth, but it could brush our planet later this week. If it does, geomagnetic storm watches or warnings may be posted, and the aurora could be vivid.
The sun has been fairly inactive over the past couple of months, except for the persistent solar wind from an Earth-facing coronal hole. While sunspots periodically erupt in electromagnetic radiation that sometimes streams toward Earth, coronal holes are massive spouts of energy that spew magnetic flux in whatever direction its pointed.
A coronal hole’s solar wind has been sparking beautiful aurora across the high latitudes over the past week or so, stretching as far south as the Midwest.
— David McColm (@triwhistler) November 8, 2015
— Dale Boan Imaging (@DaleBoanImaging) November 7, 2015
— Sarah Furchner (@SarahFurch) November 9, 2015
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