G2 Aurora Recorded – G3 possible Sept 27

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Northern Lights Now – Quick Update: The expected coronal hole high speed stream arrived with a bang. KP levels have reached G2 and the forecast calls for KP=7.33 in the next hour.

Aurora reports have been streaming in from Northern Europe and Iceland over the last couple hours. As the Sun sets across Eastern North America, expect additional reports to come in from the Northern United States and Canada.

KP 7.33 is expected in the next hour.
KP 7.33 is expected in the next hour.

The Wing-KP short term forecast is calling for KP levels to reach G3 levels in the next hour.

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Sept 28 Aurora Storm Watch Upgraded to G2

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Northern Lights Now – Update from yesterday’s post – SWPC has extended the geomagnetic storm watch into September 28 and is now calling for G2 storming. G2 storming means that KP values could exceed 5.67, strong enough for mid-latitudes to get a display of aurora.

Red on the NLN AuroraCast Clock shows to expect G2 storming conditions Early Aug 28
Red on the NLN AuroraCast Clock shows to expect G2 storming conditions Early Aug 28

The Moon is will be just shy of 1st quarter, so viewing conditions should be favorable.

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G1 Aurora Storm Watch Posted For September 27

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Northern Lights Now – The second, larger, coronal hole mentioned in the previous NLN post is now pointed directly towards Earth and has prompted the SWPC to issue a new G1 geomagnetic storm watch for Wednesday September 27.

Transequitorial Coronal Hole is directed toward Earth on September 24, 2017
Transequitorial Coronal Hole is directed toward Earth on September 24, 2017

High speed solar winds are expected to arrive in the second half of Wednesday and May persist through Friday. It would not be surprising to see the storm watch extended another day. G2 storming is also possible during this storm. Stay tuned!

Happy Hunting