NLN Aurora Brief – November 9, 2015

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Aurora Brief Volume 3, Number 7 of 7
Other Briefs: Previous Brief — Next Brief (link available when active period is imminent)

On the Sun

The largest flare of the period was reached B5 X-ray flux from AR2449 – indicating very low activity. The region showed the slightest of growth, maintaining its size and magnetic complexity while adding 2 sunspots. Other regions were quiet. The only hint that there may be activity is a small filament between AR 2448 and AR 2451. Old AR 2425 is due to return to the eastern limb at S13 in the next couple days. Flare activity is likely to be low.

On Earth

The high speed wind stream from the large northern hemisphere coronal hole arrived at Earth bringing brief periods of G1 storming. Some aurora hunters in europe were able to catch glimpses of the northern lights on their horizons. The activity from this high speed stream is expected to wane over the course of the day – with a slight chance for another G1 active period. Looking to the 3-5 day outlook, geomagnetic activity will likely remain low.

Here’s an image of the coronal hole currently influencing Earth’s magnetophere taken from November 7 in AIA 211 (purple) wavelength:

AIA 211 image showing Coronal hole responsible for November 8, 2015 G1 storming
AIA 211 image showing Coronal hole responsible for November 8, 2015 G1 storming

And a tweet showing aurora from November 8:

Happy Hunting!