X-9 class solar flare!

Damn! Why does it have to be cloudy today. Stupid 15yr olds and their fireworks. :mad:

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.
 
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The magnetosphere measurements on Aurorawatch UK say it should be visible throughout the UK.

EDIT: Changed to Northern Britain now...

Grump
 
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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:
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:
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Wolrab said:
I believe the pages get renewed and links only go to the updated page. space weather
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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.
 
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Skeptic Ginger said:
Damn! Why does it have to be cloudy today. Stupid 15yr olds and their fireworks. :mad:

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.
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Note, the links now go to the current activity and not to the activity when I linked to the pages. Sorry.
 
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.

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.
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It was huge. I've seen a ton of these and this was Yuuuge!
 
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Spaceweather update:
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.
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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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