Nearing solar minimum, a sunspot takes aim at Earth – large solar flares possible

At present, we are closing on the solar minimum. So far in 2018, a total of 18 days (45%) have been without sunspots. But we have one now, a large one that surprised sunwatchers as it rotated into view February 4th. It’s at a place very near the equator, such that if it fires off a solar flare and/or coronal mass ejection (CME), we could very well see it on a direct collision course with Earth.

The positioning is similar to the 1859 Carrington event, which hurled a huge CME directly at Earth, the largest ever observed. A solar storm of this magnitude occurring today would cause widespread disruptions and damage to a modern and technology-dependent society. The solar storm of 2012 was of similar magnitude, but it passed Earth’s orbit without striking the planet.

click for larger image

Sunspot AR2699 continues to grow, more than doubling in size since it appeared on Feb. 4th. This movie from NASA’s Solar Dynamics Observatory shows the sunspot expanding and turning toward Earth:

Earth shown to scale compared to the AR2699 sunspot group – click image for a time lapse movie.

The sunspot has developed an unstable “beta-gamma” magnetic field that harbors energy for M-class solar flares. NOAA forecasters estimate a 15% chance of such explosions on Feb. 9th.

AR2699 contains two primary dark cores larger than Earth and a scattering of moon-sized magnetic condensations stretching more than 100,000 km across the surface of the sun.

Let’s hope it stays quiet as it rotates into direct view of Earth.


Free: Solar Flare Alerts.

Via NASA spaceweather.com

UPDATE: about an hour after publishing, some minor edits were made to the title and first paragraph to clarify that we are nearing the solar minimum, not at it. – Anthony

Advertisements

  Subscribe  
newest oldest most voted
Notify of
SMC

:Product: Forecast Discussion
:Issued: 2018 Feb 09 1230 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
Solar Activity
.24 hr Summary…
Solar activity remained very low. Region 2699 (S07E20, Dai/beta)
continued to produce several B-class enhancements. The region exhibited
some consolidation in the trailer spot and slight dissipation among the
intermediate spots. No Earth-directed CMEs were observed in available
coronagraph imagery.
.Forecast…
There is a chance for C-class flares over 09-11 Feb, with a slight
chance for an isolated M-class flare on 9-10 Feb, due to activity
associated with Region 2699.
Got this from, http://services.swpc.noaa.gov/text/discussion.txt

SMC

Wasn’t the Carrington event an X class flare? A couple orders of magnitude greater than what 2699 is supposed to be capable of producing? This article strikes me as more typical of the sky is falling doom and gloom I see in the MSM…

J Hope

Yes, it was an x class flare, but Earth’s magnetic field was stronger then. Having said that, it wreaked a lot of havoc with the telegraph system. A less strong flare could potentially cause us more harm thanks to the weakening of our magnetic field, not to mention cosmic rays which are on the increase.

Hivemind

Our electronic systems are much more vulnerable now. Nobody had .3 micron CPUs in those days.

A M-class flare!! Really?? Below X10 with full impact: nothing will happen! Don’t worry 🙂

markl

Oh no, another catastrophe caused by Climate Change/Global Warming/AGW!

1saveenergy

And CO2 will make it 97% worse …

Radical Rodent

Where is the uptick button with a rolling-on-the-floor-laughing emoji when you want it?

afonzarelli

comment image
Yes, markl, as you can clearly see, rising temperatures here on earth unequivocally cause higher activity on our sun…

afonzarelli

(warped logic courtesy of Sloppy Steve Mosher)…

François

The year is 2018, why does your graph end in 2000?

joelobryan

Yawn…..

joelobryan

and Solar min is likely late 2019 to first half 2020. still 2 years out.

See - owe to Rich

Joel, I agree. If we were near solar minimum, as the article asserts, then we would already have seen high-latitude opposite-polarity sunspots of Cycle 25, which we have not. If you look at the classic butterfly diagram, e.g. at http://solarcyclescience.com/solarcycle.html , you will see that next-cycle spots occur well before solar minimum. If I recall for Cycle 23/24, new spots were seen late in 2007 but the minimum was December 2008.
Rich.

Probably later. The cycle should be longer than average and the butterfly needs to finish at the solar equator.
http://solarcyclescience.com/bin/bfly.jpg

The sun’s spin pole is largely tipped away from us at the moment so I suspect that little group will rise just a tiny bit to be at dead centre by the time it’s facing us. This is assuming I’m right in eyeballing it as being just under halfway up the disc at the moment. I don’t have a ruler on me. Sun tilt to ecliptic: ~7°.

ResourceGuy

What about the rotational factor in the CME as it explodes from the Sun as in the images from the 2012 case? It’s not exactly a line of sight issue right?

The solar wind [and CMEs] propagate readially straight away from the Sun. Not in curved spiral as many think.

ResourceGuy

Thanks

ResourceGuy

Followup question: Would there be any value to science of having sensors on the Moon and Mars to measure CMEs in the absence of magnetic fields or can we get the same information today from satellites and the ISS?

joelobryan

The flow of any one particle is outwardly orthgonal and remains so as it flows out into the solar system from the solar surface. But the rotation of the sun, if we visually track a stream of particles, gives the appearance of a garden sprinkler.
http://www.alegriphotos.com/images/Lawn-sprinkler986.jpg
The solar wind particles themselves are NOT following curvilinear trajectories. But like a movie is nothing but a digital string of fixed frames moving past our visual perceptions, we are fooled to see smooth curving motion by the sun’s rotation.

Satellites are best, especially in good positions L1 or L5 (https://en.wikipedia.org/wiki/Lagrangian_point)

JimG1

Assuming a 2 day travel time for a cme it would still need to lead us by about 3.2 mm miles as that’s where we’d be when the stuff got here. Use whatever travel time for the cme you want but we are moving in our orbit around the sun at about 67, 000 mph, per my less than reliable Internet info. Then there is of course the width of the cme? But we are a moving target.

The CME moves 28 times faster at about 1,940,000 mph, so we are almost stationary seen from the CME which in any case has a width of the order of 60 degrees, so it will hit us.

JimG1

“Shotgun! Shoot em for they run!” Courtesy of Junior Walker. I then assume that all the cme’s that miss us are due to significant misalignments when they originate?

Yeah, they are 90 degrees or more away from the line-of-sight.

JimG1

Even at 2mm mph it will take, what, 45 hours to get here and we will be 3mm miles farther along our orbit so we are not “standing still”. Must be the 60 degrees which gets us, ie the width.

Not really [that alone]. Think of a CME taking off a bit before it is at the line-of-sight to the center of the disk…

JimG1

Does the mass in the cme disperse evenly or is it worse for us if we “dead centered”.

It is pretty dispersed [broad]

JimG1

Thanks, Leif.

Samuel C Cogar

So, a CME is akin to a bullet fired from a gun, ….. and not like a beam of light from a flashlight, right?

joelobryan

Here’s one for Leif to rebut.
Reduced energy from the sun might occur by mid-century—now, scientists know by how much
February 7, 2018, University of California – San Diego
https://phys.org/news/2018-02-energy-sun-mid-centurynow-scientists.html
I’m on the fence, but seems to me SC 24 looks a lot like SC14 and then that suggests SC25 might look like SC 15. I understand Leif’s observations and predictions based on the current polar filed strengths as decent predictor of SC 25. But I also see other papers that use dynamical modelling to suggest SC25 might be the first of several grand minimum cycles.
One thing I do know: The sun is and will be the final judge and executioner of solar physicist reputations bent on making predictions.

use dynamical modelling
What are those?

Gary Kerkin

One thing I do know: The sun is and will be the final judge and executioner of solar physicist reputations bent on making predictions.

It is a pity that some of us (me, in particular) will not be around to smile gently and say “See! I told you!”

Auto

Joelo
Thanks.
Predictions are well – interesting.
Maybe his cojones are bigger – maybe not; it’s reputational damage at worst.
Understand that that is not wanted.
However.
Besides resilience – in the event of another Carrington Event – what can [or should] be done to protect homes, communities, nations and our civilisation if we are –
AAA Heading towards a Grand Minimum?
BBB Not heading towards a Grand Minimum?
And, I suppose: –
CCC Is there any meaningful difference?
A personal concern of mine.
Shipping, generally, uses magnetic compasses as the ‘get you Safe’ option. Sextants, and sun- and star-sights also fall into this small field of things that will work – even if the internet is down for a week or a month – or a year! With updated charts [which could be electronic, but it makes sense to have a few paper charts!] you can certainly get safe. Maybe not home, but safe.
If and when [and I may be hugely vastly premature in raising this!!] magnetic moment decreases, shipping will – for years/decades/centuries depend on gyros, which are fallible. Is there any clear idea of how much notice we – as a society – will get of the final decline of magnetic moment before the poles swap?
Auto

subtle2

Excuse me while I go to the kitchen to get the aluminum foil.
Need to protect what is left of my brain cells.
🙂

Slywolf

http://www.foxnews.com/science/2018/02/08/why-sun-will-soon-get-dimmer.html
One simulation of a grand minimum on the Earth’s current climate anticipates a reduction of solar warming by 0.25 percent over a 50-year period between 2020 and 2070.
While the global average surface air temperature appears to cool by “several tenths of a degree Celsius” in the initial years, this reduction was rapidly overtaken by ever-increasing trends.
“A future grand solar minimum could slow down but not stop global warming,” the study finds.

The above is quoted from the linked article. I messed up the “quote” function…

0.25% reduction will only give a temperature fall of 0.17 C [in the noise].

Leif,
I recognize your SB 1/4 rule.
How about the larger UV fluctuations affecting the stratosphere?

Toneb

“How about the larger UV fluctuations affecting the stratosphere?”
It just stirs up the atmosphere IF stratospheric PV is disrupted.
Stirring, as in moving cold air south and warm air north in the NH is NOT warming/cooling. No sig W/m^2 are involved.

Stevek

How could one create a computer program that could detect the flare and shutdown critical systems before the flare reached earth. Is there any real-time data stream that can be linked into ?

Yogi Bear

The Carrington event was at sunspot maximum.
29 Aug 1859:comment image

Sara

I took in all the comments, but have to ask what needs to be protected at my house?
The thermostat for my furnace is on an electric circuit, has a digital readout and is currently set on automatic. How will something like that be affected by this event? Is my furnace going to stop running?
What can I do to protect common household objects like my thermostat and fridge and my cell phones? Will I lose my entire list of contacts to this event? Will it destroy the batteries in my cell phones?
How do I protect my computer and my backup drives?
Do I have to shut down the entire house when this happens, to avoid an electrically-induced fire?
It would help if someone can provide some reasonable answers. The Carringon event created an unanticipated problem in that the telegraph wires hit by that EMP overheated because they were not insulated. They were bare copper wires. They not only stopped transmitting messages, but also set telegraph stations on fire. That’s the reason I’m asking these questions, which may seem silly but are not.

CC

It’s going to hit China, Russia and the mid-east. Our g-d is a just g-d.🤩

Mike Wryley

Not to fear Sara,
You will have plenty of time to figure out all those items because your electricity will be off for a few days/weeks/months depending on how bad the wheels of society come off. Warm blankets, canned food, some good books, candles, 12 gauge pump shotgun.

Sara

You left out ‘large growly dog’, Mike. 🙂

CC

I wais I had known this sooner. I have all of the above but only a weeks supply of food. I hope I do not have to shoot one of the horses or the eagles that live on rattlesnake hill.

Samuel C Cogar

@ Sara – February 9, 2018 at 5:22 pm

Do I have to shut down the entire house when this happens,

Sara, a really strong CME will induce a high voltage into most everything that is electrically conductive, regardless of whether or not said “thing” is connected to your house wiring ….. or whether or not your house wiring is connected to an external power supply or electrical grid.
The results of a direct “hit” by the CME radiation would be kinda like plugging your 110V vacuum cleaner into a 240V electrical wall outlet.
Sara, re-read Mike Wryley’s advice up above.

Sara

Okay, so basically, just hit the circuit breaker box in the laundry room and shut off the main line.
Well, with enough warning, the ComEd will just shut down the whole power grid anyway, until the thing passes, and I’ll have to go back to starting the stove top with matches and keep the doors shut until I get a text message from the phone company. (Yes, the phone company, because that’s how dumb some companies are. They’ll text you even if you have a land line, not a tablet.)

J.H.

She’ll be right.

Ian

Flare expected 26 February 2018

coolclimateinfo

Nice call as the sun obliges within 24 hrs, from Solarham today:
“Sunspot group 2699 continues to transit the Earth facing side of the sun and is now approaching center disk. The active region did manage a minor C4.6 flare a few hours ago at 13:21 UTC. New spot formation is being observed today within the center of the cluster and perhaps this will boost the chances for additional flares. There will remain a chance for an isolated moderate M-Flare. Stay tuned to SolarHam.com for the most up to date information.”
http://services.swpc.noaa.gov/images/goes-xray-flux.gif