Tag Archives: new zealand

August 2nd & 3rd Solar Storm Live Blog

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Northern Lights Now – SWPC has posted a G2 storm watch for August 2nd and a G1 storm watch for August 3rd. NLN will keep a live blog of the storm as it unfolds here.

Update 8/4 2:30 UTC (10:30pm EST)

A quick recap: The big winners for aurora photography in this storm were the Northern states west of the Great Lakes and Canada, New Zealand and Tasmania. Denmark was also in the sweet spot at the very beginning of the storm when the initial CME arrived. There were a couple pictures of faint pillars in ME, NH and VT as well.

Solar wind never quite reached the high levels expected in the prediction. The helps explain why the storming started a little later than predicted also – if the wind is moving slower, it takes longer to travel from the Sun to Earth. In the end there were four periods of G1 storming recorded.

Thanks for following along for this storm!

This solar storm is done, in total 4 periods of G1, and 4 periods of KP=4. 24 hours total.
This solar storm is done, in total 4 periods of G1, and 4 periods of KP=4. 24 hours total.

Update 8/3 16:30 UTC (12:30pm EST)

The storm seem be dying down. Solar wind speeds have picked up, but they did not reach the predicted 600+ km/s. Here’s a create timelapse video from overnight from Robert Snache (@spirithands)

Update 8/3 11:00 UTC (7:00am EST)

So many wonderful pictures overnight. There were 3 periods of G1 recorded, and it appears there is a 4th happening now. There is an outside chance that the current period will reach G2. Here are a couple tweet with aurora pictures the we’ve seen overnight:

Back of cam:

Angel Brise finds some gems on webcams:

In Regina:

Neil Zeller:

Update 8/3 04:45 UTC (12:45am EST)

Starting about an hour ago, Bz dipped back south. Bt is still very strong, so this may be enough to produce some more pillars in the mid-latitudes. Aurora hunters will still probably need long exposures to get a good view. KP=5.33 (G1) in 20 minutes. Here’s a look at the boulder KP 3-hour averages so far – notice that storming didn’t technically reach G2 levels during the last substorm:

Two periods of storming so far in this solar storm
Two periods of storming so far in this solar storm

Update 8/2 23:00 UTC (7:00pm EST)

G2 storming is now predicted by the Wing-KP model. KP=6 shortly! This is almost exactly when the initial forecasts indicated we might see G2 storming. The strong solar wind hasn’t really picked up yet – wind speeds have only just touched 450 km/s.

Wing-KP shows KP=6 soon on August 2
Wing-KP shows KP=6 soon on August 2

Bz shifted to the north, so NLN is expecting this storm to be short lived. Good luck. Hopefully there will be more later tonight

Update 8/2 22:30 UTC (6:30pm EST)

First aurora picture of the night! This tweet shows a photo from Denmark by Twitter follower @ADphotography24

Update 8/2 21:45 UTC (5:45pm EST)

Around 8:00am UTC Bz made a decisive shift to the south. This should be good for aurora hunters and we expect to see some pictures coming in soon. We also expect the wing-KP models to reflect this aurora within the next 2-3 hrs.

Update 8/2 06:30 UPC (2:30am EST)

The first hints of the expected solar storm from the filament eruption appear to be arriving. Solar wind, density and Bt/Bz all reflected the shocks impact. The shock was weaker than expected, but also a little earlier than expected. We’re not really expecting any aurora yet, still plenty of hours ahead for a show.

Initial CME arrives around 04:00 UTC on August 2
Initial CME arrives around 04:00 UTC on August 2

G2 Storm Watch Issued, Aurora Possible June 4, 2016

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Northern Lights Now – The large coronal hole that was responsible for the May 6-8 Mother’s Day G3 aurora storm is pointed toward earth again and has potential to create aurora this weekend. SWPC has posted a G2 storm watch for June 4, with a period of predicted G1 and G2 (KP=5, KP6 respectively) storming late in the UTC day. It is likely this watch will be extended to June 5 tomorrow. This means good aurora conditions are possible on Friday and Saturday evenings – particularly in the southern hemisphere where it is winter and the nights are longer.

The Dark area in center disk is the coronal hole that may produce aurora on June 4
The Dark area in center disk is the coronal hole that may produce aurora on June 4

The initial estimates for the timing of the arrival of the solar wind are often off by several hours, but the current estimates show two periods of G1 storming starting around 1500 GMT, then a period of G2 storming starting in the 2100 GMT timeperiod. This is good timing for European and North American aurora chasers, but NLN is expecting the storm to last long enough that it will be good for the evening of June 5 in New Zealand and Southern Australia. As of June 1, this is the NLN aurora clock for the day covered in the watch period:

NLN auroraCast shows G1 and G2 periods of storming in the final 3 periods of June 4
NLN auroraCast shows G1 and G2 periods of storming in the final 3 periods of June 4

Happy Hunting!

Coronal Hole Delivers G1 and G2 Aurora on 2/16 and 2/17

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Northern Lights Now – The expected high speed solar wind that prompted a G1 geomagnetic watch for February 17 arrived early, but delivered G1 and G2 storming conditions. The wind was faster moving than expected, clocking in around 670 km/s. The fast wind combined with periods of Bz south was enough to excite Earth’s geomagnetic fields. At the time of this blog post, there were 18 hours of continuous G1 and G2 – KP greater than 4.67 and 5.67 respectively – storming recorded, followed by another quick burst. Here is a graph showing the official readings from SWPC Boulder:

SWPC Boulder reports 7 periods, 21 hours, of G1 and G2 storming
SWPC Boulder reports 7 periods, 21 hours, of G1 and G2 storming

While this was a fairly strong aurora storm, there were not many aurora reports. Most of the prime viewing locations were clouded in. An large storm system across Iceland and the British Isles, general overcast across much of Scandinavia, and an East coast ice and snow storm prevented the viewers in the prime locations from experiencing this show. However, aurora hunters in some locations were able to capture the show:

New Zealand was treated to a brief period of lights just before sunrise as the storm started. Both Paul Le Comte and Ian Griffin got out of bed to snap pictures near Dunedin:

In Tasmania, @SussanSays saw the pinks and greens poke through what was forecast to be cloudy skies, and shared it in this Tweet

Eva Olsen captured greens with a hint of red/pink in Lapporten, Northern Sweeden:

Aurora hunter Darlene Tanner recorded the tail end of the storm from Alberta:

It’s possible storming could continue over the next 12-24 hours as disturbances travel along the fast wind stream, but decreases in density and wind speed indicate it’s likely this storm is now over.

Happy Hunting!