All posts by Charles Baldridge

Charles Baldridge a data scientist with a passion for studying space weather and chasing the northern lights. He has been lucky enough to see aurora in person on multiple occasions in his hometown of Burlington Vermont.

CIR and Coronal Hole Bring Quick Burst of Aurora to Northern Europe Sept 14, 2017

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Northern Lights Now – The expected G1/G2 storming from the coronal hole pointed towards Earth on Sept 11 arrived late on Sept 13. It induced a period of fast solar wind, strong Bt and G2 storming. The timing was good for our aurora hunting followers in Northern Europe who had clear skies.

Boulder Recorded Planetary K shows two periods of G2 storming in last 15 hours.
Boulder Recorded Planetary K shows two periods of G2 storming in last 15 hours.

At the onset of the storm, Bz was strongly (-15 to -18 nT) south for over half an hour at the beginning of the storm, which set up Earth’s magnetosphere to be highly activated. This means that any additional strong wind, high density, or prolonged negative Bz can quickly jump the KP back into G1/G2 range.

Bz and Bt are strong and favorable at the onset of the storm.
Bz and Bt are strong and favorable at the onset of the storm.

Here are a couple Tweets share with NLN from tonight’s storming

From the Nidderdale in northern Yorks by @HudsonWeather

From Christopher Suarez in Iceland

It is still possible that there could be additional storming. Keep your eyes on the Solar Wind Data. If there is a prolonged people (more than 45 mins or so) of negative Bz, there could be another round of storming.

Note: The current storm is likely the last for a while. There are now active regions that pose M or X class flare threats on the Sun and the next Coronal hole isn’t expected to reach Earth until late September. Make hay while the Sun shines!

Happy Hunting

G1 Aurora reports from Iceland and Northeast US – Sept 12, 2017

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Northern Lights Now – The arrival of the glancing blow CME from Sunday’s X-Class flare has induced G1 storming conditions across the Northeastern Atlantic region.

G1 storming recorded in the latest 3-hour block by SWP cin Boulder
G1 storming recorded in the latest 3-hour block by SWP cin Boulder

Darlene and Tree Tanner, on vacation on Iceland captured these dancing lights

Also in Iceland Muhammed Kizilkaya captured these:

In New Hampshire Rob Wright got a show for about 40 minutes before is calmed down

Aurora conditions could happen on and off for the rest of tonight and possibly tomorrow night as a CIR and a coronal hole high speed stream arrived.

Happy Hunting!

G2 and G1 storming expected September 13 and 14

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Northern Lights Now – SWPC has issued yet another geomagnetic storm watch. This time the period for potential Aurora is September 13 and 14, with G2 (KP=5.67 and above) on the 13th and G1 on the 14th.

Avid space weather followers may attribute this watch to the big X-class from from 9/10, but this storm is the result of CIR and the following high speed solar wind from a coronal hole.

This is a brief update. We will post more later.

Happy Hunting