Coronal hole faces Earth

Monday, 26 March 2018 - 13:17 UTC

Coronal hole faces Earth

A southern extension of the northern hemisphere polar coronal faces Earth today. 

This coronal hole looks deceptively large on the SDO/AIA 211 Ångström wavelength (Twitter insert below) but a closer look at the 193 Ångström wavelength (header image) reveals we are dealing with a southern extension of the northern hemisphere polar coronal hole. There is a very poorly defined equatorial portion but the 211 Ångström wavelength makes it seem more impressive than it really is. This shows why it is very important to compare the 193 Ångström and 211 Ångström wavelengths with each other, something you can easily do on our dedicated coronal hole page.

We do not expect geomagnetic storm conditions from this coronal hole but with the equinox just behind us, and with a little luck this could again be another interesting event for high latitude (Scandinavia, Alaska, Canada etc.) sky watchers. The stream could arrive on 29 March and active geomagnetic conditions (Kp4) are possible.

Never want to miss one of our news articles again? Subscribe to our mailing list! Always want to be up to date of the latest space weather events? Our Twitter account is the place to be for the latest space weather alerts or if you don't have Twitter you can sign up for the push alerts! Unsure what all of this space weather tech talk means? Our help section is the place to be where you can find in-depth articles, a FAQ and a list with common abbreviations. Do you still have a burning question after digging trough our help section? You are more than welcome to post on our forum where we will personally help you the best we can!

Current data suggest that it is not possible to see aurora now at middle latitudes
The strength of the interplanetary magnetic field is moderate (18.81nT), the direction is slightly South (-3.12nT).

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!

59%

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/06/01Kp5 (G1)
Number of spotless days in 2018:85
Current stretch spotless days:2

This day in history*

Solar flares
12000X1.0
22015M3.0
32001M2.0
42015M1.2
52015C7.2
ApG
1200360G3
2200136G1
3201217G1
4201416G1
5199514G1
*since 1994

Social networks