Are we at the beginning of Solar Cycle 25?

Sunday, 11 November 2018 14:25 UTC

Are we at the beginning of Solar Cycle 25?

We are doing something new today, a guest post! Good friend of the website Christian Harris who is a passionate hobby astronomer and very knowledgeable in the field of space weather started a great discussion on Facebook about something which could signal that we are at solar minimum or just beginning with Solar Cycle 25. An intriguing post from Christian that we really wanted to share with you. Below you will find his post. Let us know what you think of Christian's observation!

Looks like Solar Cycle 25 has indeed begun.

The first photo is the mapping of how strong each hemisphere of the sun's magnetic field is, blue for the northern, red for southern, and black is the average field strength:

The second photo covers from about 2014 (SC24 maximum) to last month:

When the new solar cycle begins, the polarity strength of each hemisphere maxes, and then begins to decrease as the two hemispheres start to blend together.

The northern hemisphere appears to already have peaked and is decreasing, while the southern looks like it's just beginning to drop.

Also helps explain why the new sunspot was in the northern hemisphere.

The average magnetic field strength peaked a bit higher than the beginning of last cycle's, so hopefully this means a more active maximum. Though the amount of data we have compared to our star's lifespan is basically zero, so it's hard to tell.

Graphs courtesy of The Wilcox Solar Observatory.

Any mentioned solar flare in this article has a scaling factor applied by the Space Weather Prediction Center (SWPC), the reported solar flares are 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.

Thank you for reading this article! Did you have any trouble with the technical terms used in this article? Our help section is the place to be where you can find in-depth articles, a FAQ and a list with common abbreviations. Still puzzled? Just post on our forum where we will help you the best we can! Never want to miss out on a space weather event or one of our news articles again? Subscribe to our mailing list, follow us on Twitter and Facebook and download the SpaceWeatherLive app for Android and iOS!

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

100%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/11/06X2.39
Last M-flare2024/11/15M1.0
Last geomagnetic storm2024/11/10Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
October 2024166.4 +25
November 2024161 -5.4
Last 30 days161.7 +14.5

This day in history*

Solar flares
12014M5.41
22014M4.73
31999M4.16
42002M3.49
52011M2.81
DstG
11960-142G4
21984-97G3
31981-69G1
41977-60G2
51978-57
*since 1994

Social networks