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High chance of some auroras tonight
#1
As the sun approaches its peak in the solar cycle we can expect more of this.
A CME is currently interacting with the earth as we speak, it should still be visible this evening across all of NZ.
Just find a dark spot and point your camera south.
A long exposure and tripod is recommended.

Auroa should be visible below the white line, with better sighting the further south you go.


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#2
I've found this website to be accurate in predicting aurora australis in the short term. A rise in the Kp number and negative Bz averages is what we're after.
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#3
Thank you VERY much both of you. The website looks great. I like the bit where it says we mostly don't see auroras because we're sitting inside on the couch. Getting a south facing light-free spot might be tricky, but it's good to at least have a means of prediction available.
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#4
(01-04-2024, 01:38 PM)harm_less Wrote: I've found this website to be accurate in predicting aurora australis in the short term. A rise in the Kp number and negative Bz averages is what we're after.

Thanks I will check that out.
Apparently the Kp number is not so significant for aurora in the southern hemisphere for whatever reason, but is still a good indicator. 

Just been on spaceweather.com and it appears to have been downgraded, but there might still be a chance. My friend in Bluff says the sky has had a bit of a pinkish hue to it, so might still be visible. 


"SOLAR RADIATION STORM WATCH--CANCELED: Departing sunspot AR3615 erupted on March 30th (2116 UT), producing an M9.4-class solar flare only percentage points below category X. At first it seemed that the explosion would cause a solar radiation storm. AR3615 is magnetically well-connected to Earth via the Parker Spiral. Debris from the blast should have spiraled back to our planet. However, that didn't happen, so the radiation storm watch is canceled."
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#5
(01-04-2024, 02:40 PM)nzoomed Wrote:
(01-04-2024, 01:38 PM)harm_less Wrote: I've found this website to be accurate in predicting aurora australis in the short term. A rise in the Kp number and negative Bz averages is what we're after.

Thanks I will check that out.
Apparently the Kp number is not so significant for aurora in the southern hemisphere for whatever reason, but is still a good indicator. 

Just been on spaceweather.com and it appears to have been downgraded, but there might still be a chance. My friend in Bluff says the sky has had a bit of a pinkish hue to it, so might still be visible. 


"SOLAR RADIATION STORM WATCH--CANCELED: Departing sunspot AR3615 erupted on March 30th (2116 UT), producing an M9.4-class solar flare only percentage points below category X. At first it seemed that the explosion would cause a solar radiation storm. AR3615 is magnetically well-connected to Earth via the Parker Spiral. Debris from the blast should have spiraled back to our planet. However, that didn't happen, so the radiation storm watch is canceled."
We used that website as a guide when there was activity last winter. Unfortunately the vantage point I attempted at North Egmont visitors' centre wasn't as good as I had hoped with too much high vegetation blocking our view to the south and we weren't prepared for a night walk further up the mountain. There were aurora photos taken from the Stratford area that same night so we would have been on the money if we'd been in the right spot.

The Kp and Bz values are only ~15 minutes out and change quickly so good for either watching a trend developing or making a move at short notice to gain a vantage point but not so much making long term plans for an evening's viewing.
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#6
(01-04-2024, 03:20 PM)harm_less Wrote:
(01-04-2024, 02:40 PM)nzoomed Wrote: Thanks I will check that out.
Apparently the Kp number is not so significant for aurora in the southern hemisphere for whatever reason, but is still a good indicator. 

Just been on spaceweather.com and it appears to have been downgraded, but there might still be a chance. My friend in Bluff says the sky has had a bit of a pinkish hue to it, so might still be visible. 


"SOLAR RADIATION STORM WATCH--CANCELED: Departing sunspot AR3615 erupted on March 30th (2116 UT), producing an M9.4-class solar flare only percentage points below category X. At first it seemed that the explosion would cause a solar radiation storm. AR3615 is magnetically well-connected to Earth via the Parker Spiral. Debris from the blast should have spiraled back to our planet. However, that didn't happen, so the radiation storm watch is canceled."
We used that website as a guide when there was activity last winter. Unfortunately the vantage point I attempted at North Egmont visitors' centre wasn't as good as I had hoped with too much high vegetation blocking our view to the south and we weren't prepared for a night walk further up the mountain. There were aurora photos taken from the Stratford area that same night so we would have been on the money if we'd been in the right spot.

The Kp and Bz values are only ~15 minutes out and change quickly so good for either watching a trend developing or making a move at short notice to gain a vantage point but not so much making long term plans for an evening's viewing.

That's handy to know.
Last winter I was able to take a handful of snaps from the kaimai summit. Might shoot up there tonight if there is a chance of spotting them.
There were a bunch of people up there doing the same thing too, need a decent digital camera, but many of us were getting reasonable results on our phones. 
Seemed some people were getting amazing shots even from tauranga itself, but these shots were the best I could get.
Had to play around with colour balance and iso, etc.
       
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#7
Looks like the Kps are trending upward and Bzs moving into the negative so maybe worth keeping an eye on the website, and the southern skies if Taranaki's current clear conditions are more generally present.
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