Coronal mass ejection impact
Sunday, 23 April 2023 17:16 UTC
The coronal mass ejection from the M1.7 solar flare that took place two days ago has arrived at the DSCOVR satellite. We admit... this coronal mass ejection arrived earlier than we expected!
The impact is very clear with the solar wind speed and interplanetary magnetic field data showing a clear jump. This triggered our automated detection system which posted an alert on our Twitter feed and of course our mobile Android and iOS app. The solar wind speed at the time of writing is 500km/s but it is the interplanetary magnetic field that is grabbing our attention the most as the Bt (total strength) jumped to 25nT with a -23nT southward Bz component. These are ingredients for strong G3 geomagnetic storm conditions if these values persist in the hours ahead. Middle latitude sky watchers be alert tonight for possible aurora sightings.
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 | 2024/11/13 | M1.7 |
| 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 | 166 -0.4 |
| Last 30 days | 163.2 +18.4 |