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Offline Paul Atkins  
#1 Posted : Sunday, 8 September 2019 7:03:15 PM(UTC)
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Starting this topic as a request from Ambient.

Some great sites show the current Aurora activity and forecasts. This is my favourite, due to its live gauges direct from the NASA satellite.

http://www.aurora-service.eu/aurora-forecast/

latest.jpg

Edited by user Sunday, 8 September 2019 7:04:12 PM(UTC)  | Reason: Not specified

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Ambient on 9/09/2019(UTC), snowbunny on 18/09/2019(UTC), tropicalbomb on 9/10/2019(UTC)
Offline Ambient  
#2 Posted : Wednesday, 18 September 2019 10:25:16 AM(UTC)
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Not much happening with the Sun over the last week, Zero sunspots & no Coronal Mass Ejections. A stream of solar wind flowing from a southern hole in the sun's atmosphere could graze Earth's magnetic field on Sept. 17-18. Arctic sky watchers should be alert for auroras.

Found this image of an Analemma, the figure-8 shape traced out by the Sun over the course of a year. Hungarian photographer György Soponyai stitched together more than 30 pictures spanning 12 months to reveal the Analemma of 2018-2019 over the city of Budapest. The upper and lower tips of the "8" represent the solstices.

UserPostedImage
YTD - MAX 42.2 Jan 16 (record) MIN -7.1 June 22 Rainfall 99.0 mm
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thunderman on 18/09/2019(UTC), tropicalbomb on 9/10/2019(UTC)
Offline snowbunny  
#3 Posted : Wednesday, 18 September 2019 12:17:56 PM(UTC)
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Originally Posted by: Ambient Go to Quoted Post
Not much happening with the Sun over the last week, Zero sunspots & no Coronal Mass Ejections. A stream of solar wind flowing from a southern hole in the sun's atmosphere could graze Earth's magnetic field on Sept. 17-18. Arctic sky watchers should be alert for auroras.

Found this image of an Analemma, the figure-8 shape traced out by the Sun over the course of a year. Hungarian photographer György Soponyai stitched together more than 30 pictures spanning 12 months to reveal the Analemma of 2018-2019 over the city of Budapest. The upper and lower tips of the "8" represent the solstices.

UserPostedImage



Thanks ambient. I do like astronomy. I will certainly be following this thread. I know we are in solar minimum and there is some dispute regarding how long this minimum will last. Are you an astronomer?
I love reading science stuff but unfortunately conflicting time constraints , so l enjoy others posts .
If l come across something on my daily twitter jaunt. I will post.

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thunderman on 18/09/2019(UTC), Ambient on 18/09/2019(UTC), Paul Atkins on 18/09/2019(UTC), tropicalbomb on 9/10/2019(UTC), blueperi on 11/10/2019(UTC)
Offline Ambient  
#4 Posted : Wednesday, 18 September 2019 8:25:28 PM(UTC)
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Originally Posted by: snowbunny Go to Quoted Post
I know we are in solar minimum and there is some dispute regarding how long this minimum will last. Are you an astronomer?


Just a casual Astronomer. More into Solar events pertaining to Amateur(Ham) Radio & their effects on shortwave radio signals. Sunspots charge the F layer in the Ionosphere allowing signals to bounce around the earth. With the solar minimum at the moment, signal range is greatly affected, were as back in 2010 - 12 when we where in Solar Maximum it was quite easy to make radio contacts on the other side of the world.

There are a few theories that Sun Spots play a part in the Earth`s weather patterns. Might be just a coincidence but back in 2010 - 13, there seemed to be a lot more rainfall about. Lake Eyre was full & so were the major dams in my area. Previous to this we had the Millennial Drought which occurred at the same time as the last Solar Minimum.

The cycle is around 11 years, so should be back in Max around 2021 - 2023, but knowing how strong it will be is anyone's guess.

Still have a lot to learn about this subject!

YTD - MAX 42.2 Jan 16 (record) MIN -7.1 June 22 Rainfall 99.0 mm
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Paul Atkins on 18/09/2019(UTC), NotCrocDundee on 18/09/2019(UTC), tropicalbomb on 9/10/2019(UTC), blueperi on 11/10/2019(UTC)
Offline NotCrocDundee  
#5 Posted : Wednesday, 18 September 2019 8:40:43 PM(UTC)
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It is going to bug me now.
Who was that long range forecast bloke that used to be on several radio stations and he did forecasts based on the sun's activity?
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tropicalbomb on 9/10/2019(UTC), blueperi on 11/10/2019(UTC)
Offline Ambient  
#6 Posted : Thursday, 19 September 2019 8:19:40 AM(UTC)
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Originally Posted by: NotCrocDundee Go to Quoted Post
It is going to bug me now.
Who was that long range forecast bloke that used to be on several radio stations and he did forecasts based on the sun's activity?


Might be Lennox Walker you are thinking of, that would have been back in the 70`s though. Based his forecast on Sunspots & the alignment of the planets. His son Hayden has continued the tradition.
YTD - MAX 42.2 Jan 16 (record) MIN -7.1 June 22 Rainfall 99.0 mm
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Offline snowbunny  
#7 Posted : Tuesday, 1 October 2019 8:03:40 PM(UTC)
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Interesting report on the sun

sunspots equalm2008 solar minimum.jpg



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Ambient on 3/10/2019(UTC), blueperi on 11/10/2019(UTC)
Offline Ambient  
#8 Posted : Thursday, 3 October 2019 10:24:39 AM(UTC)
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Originally Posted by: snowbunny Go to Quoted Post
Interesting report on the sun


"Small sunspot AR2749 has a magnetic polarity that identifies it as a member of old Solar Cycle 24. It poses no threat for strong solar flares" - SpaceWeather.com

Seems it is a leftover from the last cycle.
YTD - MAX 42.2 Jan 16 (record) MIN -7.1 June 22 Rainfall 99.0 mm
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Offline Ambient  
#9 Posted : Thursday, 3 October 2019 10:27:33 AM(UTC)
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A "STEVE STORM" HITS SCANDINAVIA

When a stream of solar wind hit Earth's magnetic field last Friday, Sept. 27th, forecasters expected an aurora storm around the Arctic Circle. Turns out, it was more of a "STEVE storm." Many sky watchers in Scandinavia saw the mauve ribbon of light for the very first time. Göran Strand photographed the event from Handöl, Sweden:
UserPostedImage

STEVE (Strong Thermal Emission Velocity Enhancement) looks like an aurora, but it is not. The phenomenon is caused by hot (3000°C) ribbons of gas flowing through Earth’s magnetosphere at speeds exceeding 6 km/s (13,000 mph). These ribbons appear during some geomagnetic storms, revealing themselves by their soft purple/mauve glow.

Edited by user Thursday, 3 October 2019 10:28:30 AM(UTC)  | Reason: Not specified

YTD - MAX 42.2 Jan 16 (record) MIN -7.1 June 22 Rainfall 99.0 mm
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NotCrocDundee on 3/10/2019(UTC), tropicalbomb on 9/10/2019(UTC), blueperi on 11/10/2019(UTC), southawk on 14/10/2019(UTC)
Offline NoDrops  
#10 Posted : Thursday, 3 October 2019 1:51:50 PM(UTC)
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Stunning image there. That got me looking at the colours that can be see. (One day Americans will learn to spell correctly)
https://www.space.com/15...s-earth-facts-sdcmp.html


What causes the colors?
The colors most often associated with the aurora borealis are pink, green, yellow, blue, violet, and occasionally orange and white. Typically, when the particles collide with oxygen, yellow and green are produced. Interactions with nitrogen produce red, violet, and occasionally blue colors.

The type of collision also makes a difference to the colors that appear in the sky: atomic nitrogen causes blue displays, while molecular nitrogen results in purple. The colors are also affected by altitude. The green lights typically in areas appear up to 150 miles (241 km) high, red above 150 miles; blue usually appears at up to 60 miles (96.5 km); and purple and violet above 60 miles.
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Offline tropicalbomb  
#11 Posted : Wednesday, 9 October 2019 6:29:27 PM(UTC)
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BOM Australia have posted a space weather twitter and provided this link?Confused Strange?

Are they expecting something ??


https://twitter.com/BOM_...atus/1181841797598846976


https://www.abc.net.au/n...uns-darker-side/10559668
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Ambient on 10/10/2019(UTC), blueperi on 11/10/2019(UTC), southawk on 14/10/2019(UTC), juztchillin on 17/10/2019(UTC)
Offline Ambient  
#12 Posted : Friday, 11 October 2019 8:37:28 AM(UTC)
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Originally Posted by: tropicalbomb Go to Quoted Post
Are they expecting something ??


If there is an event strong enough to wipe out GPS that would be the least of your problems!Scared
YTD - MAX 42.2 Jan 16 (record) MIN -7.1 June 22 Rainfall 99.0 mm
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Offline Ambient  
#13 Posted : Sunday, 13 October 2019 8:19:36 AM(UTC)
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I find these videos about weekly solar events very informative.


Edited by user Thursday, 17 October 2019 7:35:43 AM(UTC)  | Reason: Updated link.

YTD - MAX 42.2 Jan 16 (record) MIN -7.1 June 22 Rainfall 99.0 mm
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Offline juztchillin  
#14 Posted : Thursday, 17 October 2019 7:19:15 PM(UTC)
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What a magnificent animation of this solar activity

'
Spectacular eruption from solar active region AR 12734 with a large-scale coronal propagating front and quasi-periodic wave train. But this was over 7 months ago. We may not expect a show like this in this elongated solar minimum conditions.'
https://twitter.com/halo...atus/1184225447279779840
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Ambient on 17/10/2019(UTC)
Offline mirkonikson  
#15 Posted : Saturday, 2 November 2019 10:44:53 PM(UTC)
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i heard that solar activity was strong lately
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Pabloako on 3/11/2019(UTC)
Offline Pabloako  
#16 Posted : Sunday, 3 November 2019 5:30:15 PM(UTC)
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Originally Posted by: mirkonikson Go to Quoted Post
i heard that solar activity was strong lately


Hi Mirkonikson and welcome to the WeatherForum! Glad you could join us.
Looking at various sources, the solar activity peaked towards the middle of last month and is now in a bit of a quiet phase.

For a detailed and ongoing view I think this Twitter feed (Halo CME) is a great source.
https://twitter.com/halocme

Edited by user Sunday, 3 November 2019 5:31:07 PM(UTC)  | Reason: Wrong link

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