M6.9 coronal mass ejection arrival
Sunday, 21 December 2014 19:13 UTC
The M6.9 coronal mass ejection has arrived at the ACE satellite. First signs are looking promising for enhanced auroral conditions as the direction of the IMF is cooperating. It is currently directed southward and occasionally dipping below -10nT. A minor G1 geomagnetic storm watch remains in effect as the solar wind and IMF parameters are promising.
The impact isn't much stronger or weaker than expected. The solar wind speed rose to about 440km/s during the impact and the directon of the IMF remained southward, with a total strength (Bt) of about 15nT. Below the stats as they were at the time of posting this article.
Sky watchers from Scotland, Scandinavia, Finland and the upper United States should remain alert in the hours ahead for visible aurora if we reach G1 storm conditions around local midnight.
You can follow the impact live on our auroral activity page.
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
X2.0 solar flare
X1.8 solar flare, severe geomagnetic storm watch
Latest forum messages
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!
Space weather facts
| Last X-flare | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/20 | M1.1 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 142.7 -23.8 |
| Last 30 days | 155.2 +4.4 |