G3 Aurora Recorded Sept 27/28 – More G1 Ahead

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Northern Lights Now – The late September geomagnetic activity resulting from a large coronal hole has exceeded initial expectations reaching G3 storm levels and helping aurora hunters world-wide capture staggering views. Solar wind speeds have been between 650 and 750 km/s for just over 24 hours now. Periods of high density and negative Bz, and quickly fluctuating Bz during that time pushed KP values above 6.67 for several hours.

Recorded KP values from SWPC in Boulder indicate 7 synoptic periods for G1+, 2 with G3 stroming
Recorded KP values from SWPC in Boulder indicate 7 synoptic periods for G1+, 2 with G3 stroming

The timing worked well for aurora hunters from Northern Europe across Northern North America. Clouds disrupted viewing in the UK and New England, but many locations saw vivid displays of Green, Red and Purple overnight.

Wendy T shared this great set of 4 images

Casey Grimley captured some pinks and the coveted fishbone aurora in Ogden Valley

And Jeff Wallace shared some spectacular full sky Gree swirling aurora

Looking ahead – it seems likely that at least G1 storming will continue through at least the next 12 hours or so. SWPC has extended their G1 storm watch an additional 24 hours through Sept 29.

Looking ahead - G1 watch is extended through Sept 29
Looking ahead – G1 watch is extended through Sept 29

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Happy Hunting

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.

Happy Hunting

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.

Happy Hunting