Coronal hole faces Earth

Monday, 18 November 2019 20:12 UTC

Coronal hole faces Earth

A familiar coronal hole is facing our planet today. This is indeed the coronal hole that has been the source of quite a few geomagnetic storms during the past few months.

...but in all honesty... the good news ends there. If you take a look at the coronal hole today (as seen by SDO in the tweet above) and compare it with how it looked like during the previous rotation we have to conclude it has drastically diminished in size during the past few weeks. Based on the limited data that we have available from STEREO Ahead and the way this coronal hole developed, it seems much less likely that we will see similar geomagnetic storm conditions this time around. As a matter of fact, even active geomagnetic conditions (Kp4) seem a stretch at this time but we give this coronal hole the benefit of the doubt as it has always been a reliable source of geomagnetic activity. A Co-rotating Interaction Region (CIR) ahead of the high speed stream will likely arrive on Wednesday (20 November) and might spark some high latitude aurora. Geomagnetic storming does not seem likely this time around but we hope to be surprised!

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!

13%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/02/22X1.6
Last M-flare2024/02/22M1.5
Last geomagnetic storm2023/12/18Kp6 (G2)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
January 2024123 +8.8

This day in history*

Solar flares
12024X1.6
22002M6.4
32023M2.6
42000M1.71
52000M1.63
ApG
1199463G4
2202216G1
3201412
4202117
5200615
*since 1994

Social networks