Coronal hole faces Earth
Monday, 11 September 2017 23:01 UTC
A southern extension of the northern hemisphere polar coronal hole is facing our planet today. It is the same coronal hole that caused minor G1 geomagnetic storm conditions for four days last month.
The coronal hole solar wind stream is expected to arrive this Wednesday (13 September) and the NOAA SWPC has issued a moderate G2 geomagnetic storm watch for that date. A minor G1 geomagnetic storm watch is in effect for this Thursday, 14 September.
A coronal hole is facing Earth. Enhanced solar wind could arrive in ~3 days - Follow live on https://t.co/T1Jkf6i4Cb pic.twitter.com/ZToNIYQsS9
— SpaceWeatherLive (@_SpaceWeather_) September 10, 2017
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!
Latest news
Coronal hole faces Earth
M2.7 solar flare with earth-directed CME!
M4.4 solar flare from sunspot region 4168
Latest forum messages
Support SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2025/06/19 | X1.9 |
| Last M-flare | 2025/10/03 | M1.2 |
| Last geomagnetic storm | 2025/10/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2025 | 129.8 -3.7 |
| October 2025 | 140.1 +10.3 |
| Last 30 days | 131.3 -1.2 |