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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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Earth-directed coronal mass ejection

Tuesday, 5 September 2017 - 16:41 UTC

Earth-directed coronal mass ejection

Sunspot region 2673 really delivered yesterday with multiple M-class events and a complex earth-directed eruption that is likely going to arrive tomorrow! Keep on reading to find out more!

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M-class solar flares, Sunspot region 2673

Monday, 4 September 2017 - 16:35 UTC

M-class solar flares, Sunspot region 2673

It has been a long time since a sunspot region managed to get us really excited but earth-facing sunspot region 2673 has succeeded in doing just that. Be sure to keep on reading why you should be getting excited as well!

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Sunspot region 2674

Friday, 1 September 2017 - 18:03 UTC

Sunspot region 2674

We admit! We have been ignoring sunspot region 2674 since it appeared on the solar disk a few days ago. It was a large sunspot region at the time with two massive sunspots. It however wasn't all that complicated and there wasn't much of a risk that it would produce a strong solar flare. That changed however during the past 12 hours or so. Keep on reading to find out what sparked our sudden interest in this sunspot region.

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CME arrival? G1 geomagnetic storm

Thursday, 31 August 2017 - 08:56 UTC

CME arrival? G1 geomagnetic storm

Enhanced geomagnetic conditions are underway as a solar wind structure arrived at DSCOVR this night at about 04:43 UTC. The minor G1 geomagnetic threshold was reached today at 08:23 UTC.

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Coronal hole faces Earth, DSCOVR glitches

Monday, 28 August 2017 - 18:49 UTC

Coronal hole faces Earth, DSCOVR glitches

A southern extension of the northern hemisphere polar coronal hole that extends all the way south of the solar equator is now facing Earth.

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M1.2 solar flare, C7.0 solar flare

Sunday, 20 August 2017 - 07:31 UTC

M1.2 solar flare, C7.0 solar flare

A new sunspot region is now rotating into view of the north-east limb. It should receive sunspot number 2672 later today or tomorrow. This could be yet another sunspot region with potential to produce strong solar flares as it made itself known this night with an M1.2 solar flare that peaked at 01:52 UTC.

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

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Today's space weather

Auroral activity Minor Severe
High latitude 30% 45%
Middle latitude 20% 5%
Predicted Kp max 4
Solar activity
M-class solar flare 1%
X-class solar flare 1%
B1.7
Moon phase
Waxing Crescent

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/01/14Kp5 (G1)
Number of spotless days in 2018:6
Last spotless day:2018/01/14

This day in history*

Solar flares
12005X7.1
22001M7.7
32004M6.1
41999M5.2
52010M3.4
ApG
1201626G1
2200319G1
3200418
4200517G1
5199815
*since 1994

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