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Coronal hole faces Earth

Monday, 5 December 2016 - 20:41 UTC

Coronal hole faces Earth

Sunspot region 2615 never really got going again after the two M-class events on 29 November. The sunspot region grew in size the past few days but never regained the magnetic complexity needed for M-class events. A shame as a nice earth-directed coronal mass ejection would have been very welcome during these quiet times. That means we shift our attention to coronal holes once more and guess what... we have a large coronal hole facing our planet today!

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M1.0 solar flare from sunspot region 2615

Tuesday, 29 November 2016 - 19:45 UTC

M1.0 solar flare from sunspot region 2615

We've been a bit inactive the past few days just like our Sun but she woke us up today with an M-class solar flare!

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Weak CME passage, coronal hole

Wednesday, 9 November 2016 - 09:43 UTC

Weak CME passage, coronal hole

A weak shock passage was detected by DSCOVR around 05:43 UTC this morning. This is likely the filament coronal mass ejection from 5 November that is now passing our planet. As expected by us, it is only a minor glancing blow and geomagnetic storming is not expected at this time. Kp values up to 4 are possible with the current conditions.

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Filament erupted, glancing blow possible

Saturday, 5 November 2016 - 16:53 UTC

Filament erupted, glancing blow possible

A filament eruption took place this night on the Sun's northern hemisphere.

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She's back! Large coronal hole faces Earth again

Sunday, 23 October 2016 - 13:18 UTC

She's back! Large coronal hole faces Earth again

It is fairly clear we are well on our way to solar minimum but October has thus far been an interesting month despite the lack of any significant solar activity.

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CME tomorrow, coronal hole faces Earth

Wednesday, 12 October 2016 - 18:35 UTC

CME tomorrow, coronal hole faces Earth

While we are awaiting the arrival of a small coronal mass ejection (expected to arrive tomorrow) our automated alert system notified us of another very interesting solar feature: we have a coronal hole on the Sun and it faces Earth today.

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Incoming CME? Dst-index

Monday, 10 October 2016 - 19:27 UTC

Incoming CME? Dst-index

A faint asymmatric full halo coronal mass ejection became visible yesterday on SOHO LASCO coronagraph imagery. There wasn't a very clear source to be found on SDO imagery but a small filament eruption is the primary suspect.

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Massive coronal hole faces Earth

Monday, 26 September 2016 - 10:14 UTC

Massive coronal hole faces Earth

She's back! That massive coronal hole system that faced us four weeks ago is back and it survived its trip around the farside of our star. This truly gigantic coronal hole managed to cause geomagnetic storming conditions on five consecutive days during the first five days of this month. Fantastic auroral displays were reported from all around the world.

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A stormy start to September

Tuesday, 6 September 2016 - 18:56 UTC

A stormy start to September

It has been five crazy first days of this month as every single day thus far provided us with at least one 3-hour period where we reached geomagnetic storm conditions according to the NOAA SWPC. The first three days of this month even treated us with moderate G2 geomagnetic storming conditions. This was all thanks to a massive coronal hole system that has now started to rotate out of Earth's view. The solar wind stream has been diminishing in strength during the past hours and today will likely be the first day of this month that we will not reach the minor G1 geomagnetic storm level.

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Coronal hole faces Earth

Saturday, 27 August 2016 - 20:51 UTC

Coronal hole faces Earth

Four nights ago we saw an unexpected G1 geomagnetic storm that produced aurora which was visible even from middle latitude locations like England and the Netherlands. This was the work of a coronal hole solar wind stream that tipped the north-south direction of the IMF (Bz) southward during multiple hours.

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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 (616.9 km/sec.)

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Today's space weather

Auroral activity
Minor Severe
High latitude 15% 10%
Middle latitude 5% 1%
Predicted Kp max 5
Solar activity
M-class solar flare 1%
X-class solar flare 1%
B1.5

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Last X-flare:2015/05/05X2.7
Last M-flare:2016/11/29M1.2
Last geomagnetic storm:2016/11/25Kp6 (G2)
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