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Coronal hole faces Earth, G1 watch issued

lördag 21 juli 2018 - 19:09 UTC

Coronal hole faces Earth, G1 watch issued

It is summer in the northern hemisphere. While solar activity has been very low the past few weeks as we are crawling towards solar minimum, the Sun is actually doing its mighty best here in Europe with scorching temperatures throughout large parts of Europe. However, we were notified today by our very own alert system that we have an interesting solar feature on the Sun today. Indeed you guessed it: a coronal hole is facing our planet today and sending a fast solar wind stream towards us.

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G1 storm watch issued by NOAA

måndag 25 juni 2018 - 17:53 UTC

G1 storm watch issued by NOAA

The NOAA SWPC has a minor G1 geomagnetic storm watch in effect for Wednesday, 27 June.

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Quiet space weather, Coronal hole

lördag 16 juni 2018 - 09:46 UTC

Quiet space weather, Coronal hole

The beginning of June has been very quiet when it comes to space weather. While we did reach minor G1 geomagnetic storm conditions back on the very first day of this month, no other space weather events have occurred which are worth mentioning. The solar wind conditions at Earth have been very underwhelming for a while now and the Sun has also been very quiet as we are starting to reach solar minimum conditions. That said, our automated coronal hole detection system spotted an opening in the corona yesterday. A southern extension of the northern hemisphere polar coronal hole was facing our planet today.

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Coronal hole faces Earth, G1 watch issued

tisdag 29 maj 2018 - 19:06 UTC

Coronal hole faces Earth, G1 watch issued

Sunspot region 2712 didn't manage to develop further since we wrote about it yesterday and has been pretty quiet today with only a couple of B-class solar flares. However, sunspot region 2712 is not the center of our attention today. Indeed, a coronal hole takes the spotlight today. A southern hemisphere coronal hole close to the solar equator is facing our planet today and sending an enhanced solar wind stream towards our planet.

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Sunspot region 2712

måndag 28 maj 2018 - 17:51 UTC

Sunspot region 2712

Summer is upon us in the northern hemisphere and that means very little aurora sightings. The fact that we are in a very quiet space weather period doesn't help either of course but after a long and cold winter these warm rays of sunshine are very much welcome. Right? Or are you starting to experience aurora withdrawal symptoms? Either way, something has been drawing our attention today and that is the Sun's X-ray output as measured by GOES-15. Indeed: we are talking about solar flares.

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''A shadow of its former self''

måndag 14 maj 2018 - 18:10 UTC

''A shadow of its former self''

A lot of aurora enthusiasts have put 17 May in their agenda as a possible date for some enhanced geomagnetic activity and thus auroral displays. Why? Because that is the date that a coronal hole solar wind stream is expected to arrive at Earth from a coronal hole that managed to give us moderate G2 geomagnetic storm conditions back in April.

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Coronal hole faces Earth

torsdag 03 maj 2018 - 16:04 UTC

Coronal hole faces Earth

We've been in a very quiet space weather period for a while now but we have finally something interesting to report about! A transequatorial coronal hole is facing our planet today and sending a high speed solar wind stream towards us!

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Moderate G2 geomagnetic storm

fredag 20 april 2018 - 13:04 UTC

Moderate G2 geomagnetic storm

The anticipated coronal hole solar wind stream has arrived at our planet and packed quite a punch. Active geomagnetic conditions (Kp4) were expected but the solar wind conditions were so impressive it was enough for us to reach the moderate G2 geomagnetic storm threshold which equals a Kp of 6 and some impressive auroral displays around the globe.

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Coronal hole faces Earth

tisdag 17 april 2018 - 13:57 UTC

Coronal hole faces Earth

Solar activity has been pretty boring lately with no solar flares or sunspot regions really worth mentioning. A tiny region with a reverse magnetic polarity did appear a few days ago which likely belonged to the next solar cycle but it faded away pretty quickly. It is normal for sunspot regions from two solar cycles to overlap around solar minimum but it does show we are closing in on true solar minimum. This combined with the fact that we are hardly seeing any sunspots or flaring activity at the moment means this solar cycle might be a shorter than average cycle.

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Coronal hole faces Earth

fredag 06 april 2018 - 19:07 UTC

Coronal hole faces Earth

A familiar coronal hole has returned! It is a thin east-west aligned northern hemisphere coronal hole close to the solar equator that is facing our planet today.

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Enligt den aktuella datan finns det ingen chans för norrsken på medelhöga breddgrader
Ett södra hemisfären koronahål detekterades i en jordriktad position lördag 21 juli 2018

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Senaste X-utbrottet:10/09/2017X8.2
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I dag i historien*

Solutbrott
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