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Sunspot region 2673 YouTube video

Thursday, 14 September 2017 - 22:11 UTC

Sunspot region 2673 YouTube video

Solar activity has plunged to very low levels with the disappearance of sunspot region 2673.

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Coronal mass ejection arrival

Tuesday, 12 September 2017 - 19:54 UTC

Coronal mass ejection arrival

The X8.2 coronal mass ejection has arrived. A weak impact was observed at 19:29 UTC with a minor increase in the solar speed, density and the total strength of the interplanetary field (Bt). This is without a doubt the glancing blow arrival of the X8.2 coronal mass ejection as the low energy protons measured by ACE/EPAM peaked at the moment of impact, a classic sign of a CME arrival.

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Coronal hole faces Earth

Monday, 11 September 2017 - 23:01 UTC

Coronal hole faces Earth

A southern extension of the northern hemisphere polar coronal hole is facing our planet today. It is the same coronal hole that caused minor G1 geomagnetic storm conditions for four days last month.

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X8.2 coronal mass ejection

Monday, 11 September 2017 - 16:42 UTC

X8.2 coronal mass ejection

Yesterday's X8.2 (R3-strong) solar flare from sunspot region 2673 was one of the most spectacular solar flares we have ever seen. Not only was this the second strongest solar flare of the current solar cycle, it also launched an extremely fast and broad coronal mass ejection. What a way to say goodbye! Let's hope it survives its 2 week journey on the far side of the Sun!

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X8.2 solar flare

Sunday, 10 September 2017 - 16:18 UTC

X8.2 solar flare

Sunspot region 2673 departs in style! The region is now behind the western limb but it still managed to produce it's fourth X-class solar flare: it erupted with an X8.28 (R3-strong) solar flare that peaked at 16:06 UTC.

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X9.3 CME impact, Severe G4 storm

Friday, 8 September 2017 - 03:37 UTC

X9.3 CME impact, Severe G4 storm

The X9.3 coronal mass ejection has arrived at Earth and boy does it pack a punch! While the M5.5 coronal mass ejection turned out to be a huge dissapointment, the X9.3 coronal mass ejection is much stronger than expected and we are seeing some of the strongest geomagnetic storming of the current solar cycle.

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Major X1.39 solar flare

Thursday, 7 September 2017 - 17:35 UTC

Major X1.39 solar flare

Solar activity is once again at high levels. Sunspot region 2673 continues to be very active as it rotates towards the west limb. Today (thus far!) it managed to produce a couple of M-class solar flares and an X-class solar flare.

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Coronal mass ejection arrival

Thursday, 7 September 2017 - 03:31 UTC

Coronal mass ejection arrival

While we were catching some much needed sleep, the coronal mass ejection from Monday's M5.5 solar flare arrived at Earth. Our alert system detected the impact and send out a tweet and a push alert when the shock arrived at DSCOVR around 23:08 UTC.

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X9.3 earth-directed coronal mass ejection

Wednesday, 6 September 2017 - 21:09 UTC

X9.3 earth-directed coronal mass ejection

The wait is over. We finally have a complete set of SOHO/LASCO coronagraph images from today's memorable X9.3 solar flare. If you missed today's space weather events be sure to read this news article before you continue reading here.

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Major X9.33 solar flare

Wednesday, 6 September 2017 - 16:28 UTC

Major X9.33 solar flare

What a day! The strongest solar flare of solar cycle 24 erupted today at 12:02 UTC and of course it was sunspot region 2673 that took center stage. It was a memorable X9.33 solar flare (R3-strong radio blackout) which was highly eruptive as well. We have to go all the way back to 5 May 2015 to find the last time we had an X-class solar flare and it has been 12 years ago since we had a solar flare which was stronger than today's X9.3 event! Not bad considering we are already in the declining phase of solar cycle 24!

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Current data suggest that it is not possible to see aurora now at middle latitudes

Latest news

Today's space weather

Auroral activity Minor Severe
High latitude 25% 40%
Middle latitude 10% 1%
Predicted Kp max 4
Solar activity
M-class solar flare 15%
X-class solar flare 1%
B2.1 B2.8
Moon phase
Waxing Crescent

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/09/09M1.1
Last geomagnetic storm:2017/09/18Kp5 (G1)
Number of spotless days in 2017:56
Last spotless day:2017/08/01

This day in history*

Solar flares
12001X2.6
22011X1.9
32011M7.1
41997M5.9
52011M5.8
ApG
1200341G2
2199828G2
3200624G1
4201421
5201015
*since 1994