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Failed storm prediction, Next coronal hole

Thursday, 18 May 2017 - 13:22 UTC

Failed storm prediction, Next coronal hole

The NOAA SWPC had a moderate G2 geomagnetic storm watch in effect during the past few days but we unfortunately haven't even reached the minor G1 geomagnetic storm level. The G2 geomagnetic storm watch from the NOAA Space Weather Prediction Center was a result of a possible coronal mass ejection (CME) impact, something we indeed never mentioned on the site or on our social media pages. We did not believe this solar storm had an earth-bound component so choose to not mention it, a strategy that proved to be the right one. A minor G1 geomagnetic storm was however predicted due to a coronal hole solar wind stream but the stream was weaker than expected and only caused active geomagnetic conditions (Kp4) on 15 May. We are however getting another chance to reach geomagnetic storm levels thanks to yet another coronal hole.

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Coronal hole faces Earth

Saturday, 13 May 2017 - 08:40 UTC

Coronal hole faces Earth

Space weather has been very quiet for weeks now. Solar activity has been very low (A and B-class activity only) ever since 19 April and the last geomagnetic storm was a long time ago as well: 23 April. There were pretty much no interesting space weather events to report since that time but today we finally have something interesting to report. It might not be the biggest news we have ever brought to you (literally) but we take anything at the moment! It is a small coronal hole that is facing our planet today and it is now sending an enhanced solar wind stream towards us which could spark some nice aurora in a few days from now.

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Coronal hole faces Earth

Friday, 21 April 2017 - 09:58 UTC

Coronal hole faces Earth

Sunspot region 2651 remains fairly quiet with only some B-class activity yesterday. It had a small magnetic delta structure yesterday morning but this has decayed leaving not enough magnetic complexity for strong flares. That doesn't mean we should forget about this region as it can still regain some magnetic complexity which would increase the odds of seeing a strong solar flare but for now we should not expect much fireworks from it. But sunspot region 2651 aside, this sunspot region is not our main point of interest in this news article. We have a very familiar solar feature facing our planet right now: a large coronal hole that I'm sure you will recognize from last time around.

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G2 storm, Sunspot region 2651

Thursday, 20 April 2017 - 09:31 UTC

G2 storm, Sunspot region 2651

Moderate G2 geomagnetic storm conditions were observed this night due to persisting coronal hole solar wind stream influences. Conditions remain favorable for more geomagnetic storming likely up to the minor G1 storm level in the coming hours.

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Old sunspot region 2644 is back!

Tuesday, 18 April 2017 - 21:50 UTC

Old sunspot region 2644 is back!

The remnants of old sunspot region 2644 (which was responsible for seven M-class solar flares during the first few days of this month) have now rotated back onto the earth-facing solar disk. It should receive sunspot number 2651 later today from the NOAA SWPC.

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Small coronal hole faces Earth

Friday, 14 April 2017 - 21:17 UTC

Small coronal hole faces Earth

A minor coronal hole located on the Sun's southern hemisphere is facing Earth today.

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Quiet times

Thursday, 13 April 2017 - 00:26 UTC

Quiet times

Quiet times. Not a whole lot to report about the past few days but some things caught our attention. A short roundup:

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Goodbye 2644

Monday, 3 April 2017 - 21:33 UTC

Goodbye 2644

Sunspot region 2644 was again the most active sunspot region on the earth-facing solar disk today. It produced two M-clas solar flares today: an M1.2 solar flare (R1-minor) at 01:05 UTC and an M5.8 solar flare (R2-moderate) that peaked at 14:29 UTC. The M5.8 solar flare is this region's third solar flare that peaked above the M5 threshold and the strongest solar flare produced by sunspot region 2644 thus far.

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Four M-class solar flares, Sunspot region 2645

Monday, 3 April 2017 - 00:47 UTC

Four M-class solar flares, Sunspot region 2645

Solar activity was at high levels yesterday (2 April 2017) as our Sun produced four M-class solar flares! The strongest of these solar flares was an M5.7 solar flare (R2-moderate) that peaked at 20:33 UTC.

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M5.3 solar flare, M4.4 CME

Sunday, 2 April 2017 - 09:53 UTC

M5.3 solar flare, M4.4 CME

Sunspot region 2644 (N14W60) does it again! It just produced a long duration M5.3 solar flare (R2-moderate) that peaked today at 08:02 UTC.

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Current data suggest that it is not possible to see aurora now at middle latitudes
The solar wind speed is currently moderately high (565.4 km/sec.)

Latest news

Today's space weather

Auroral activity Minor Severe
High latitude 20% 20%
Middle latitude 5% 1%
Predicted Kp max 3
Solar activity
M-class solar flare 1%
X-class solar flare 1%
Moon phase
Waning Crescent

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Space weather facts

Last X-flare:2015/05/05X2.7
Last M-flare:2017/04/03M5.8
Last geomagnetic storm:2017/04/23Kp6 (G2)
Number of spotless days in 2017:37
Last spotless day:2017/05/15

This day in history*

Solar flares
12013M5.0
22014C6.4
32000C6.3
42000C5.1
52002C5.0
ApG
1200326G1
2201219
3200713
4201310
520089
*since 1994