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Tags astronomy , solar flares

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Old 7th September 2017, 09:02 AM   #41
theprestige
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Originally Posted by Spindrift View Post
If you say so.
Not me; NoahFence.
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Old 7th September 2017, 06:03 PM   #42
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Damn! Why does it have to be cloudy today. Stupid 15yr olds and their fireworks.

If it was clear and nighttime here, there would be visible auroras over Seattle right now.

Kp 8

If you need a visual of that.

Last edited by Skeptic Ginger; 7th September 2017 at 06:04 PM.
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Old 8th September 2017, 04:15 AM   #43
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Damn clouds. Supposedly visible as far south as Arkansas.
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Old 8th September 2017, 04:38 AM   #44
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From Ginger's link it doesn't seem visible from even up here.
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Old 8th September 2017, 07:46 AM   #45
Wolrab
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Originally Posted by Argumemnon View Post
From Ginger's link it doesn't seem visible from even up here.
I believe the pages get renewed and links only go to the updated page. space weather .com says aurora were visible as far south as Arkansas.
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Old 8th September 2017, 08:49 AM   #46
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The magnetosphere measurements on Aurorawatch UK say it should be visible throughout the UK.

EDIT: Changed to Northern Britain now...

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Old 10th September 2017, 11:01 AM   #47
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Parting shot, an X6 (Spaceweather 09-09-17) or X8 flare depending on which page I look at. But this one was not Earth directed. From Sapceweather:
Quote:
GOODBYE SUNSPOT, SEE YOU IN 2 WEEKS: Sunspot AR2673 materialized with shocking speed on Sept. 3rd. Three days later it unleashed the strongest solar flare in more than a decade, an X9.3-class eruption that hurled a CME directly at Earth. Now this memorable sunspot is about to disappear. Maximilian Teodorescu of Magurele, Romania, photographed it approaching the sun's western limb:


Originally Posted by Wolrab
I believe the pages get renewed and links only go to the updated page. space weather
Yeah, sorry about that. The Spaceweather page updates every day too and the stories change. In the right hand upper corner of the page there is a link to the archive by date. Here's the 09-08-17 page. You can't cite a specific day until the day after it was the current date.

Last edited by Skeptic Ginger; 10th September 2017 at 11:05 AM.
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Old 10th September 2017, 11:03 AM   #48
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Originally Posted by Skeptic Ginger View Post
Damn! Why does it have to be cloudy today. Stupid 15yr olds and their fireworks.

If it was clear and nighttime here, there would be visible auroras over Seattle right now.

Kp 8

If you need a visual of that.
Note, the links now go to the current activity and not to the activity when I linked to the pages. Sorry.
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Old 10th September 2017, 12:24 PM   #49
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Originally Posted by Spindrift View Post
CME?
Can't Manage Excitement for the 'event'
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Old 10th September 2017, 12:26 PM   #50
Whip
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Originally Posted by Wolrab View Post
'SPLOSIONS!!!!!

lol. must be a Robot Chicken fan

https://www.youtube.com/watch?v=v7ssUivM-eM
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Old 10th September 2017, 06:40 PM   #51
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Wow! I said the X8 flare was not Earth directed but that might not be true. A huge blast of whatever particles come out first hit the SOHO satellite.

Quote:
MAJOR SOLAR FLARE AND RADIATION STORM: Departing sunspot AR2673 erupted again on Sept.10th (1606 UT), producing a major X8-class solar flare. Protons accelerated toward Earth by the explosion are swarming around our planet now, causing a moderately strong solar radiation storm.

A pulse of ultraviolet and X-radiation from the flare ionized the top of Earth's atmosphere, triggering a shortwave radio blackout over the Americas (blackout map #1). That blackout is now subsiding. However, an even stronger blackout of shortwave radio communications around the poles is still underway (blackout map #2). Stay tuned for updates about this significant event.
It was huge. I've seen a ton of these and this was Yuuuge!

Last edited by Skeptic Ginger; 10th September 2017 at 06:50 PM.
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Old 11th September 2017, 09:13 AM   #52
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Spaceweather update:
Quote:
GEOMAGNETIC STORM PREDICTED: NOAA forecasters say there is a 60% chance of moderately strong (G2-class) geomagnetic storms on Sept. 13th when a CME delivers a glancing blow to Earth's magnetic field. This is the CME hurled into space by yesterday's powerful X8-class solar flare. In the United States, auroras could appear as low as New York to Wisconsin to Washington state.
Seems inconsistent with the massive "pulse of ultraviolet and X-radiation" but we'll see. There's a chance of clear skies here. Just my luck though, clear skies and not a large enough aurora, or big aurora and clouds.
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Old 12th September 2017, 06:33 PM   #53
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Flare has arrived. It's still daytime here and partly cloudy. I'll have to wait and see.

http://www.swpc.noaa.gov/communities...er-enthusiasts
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