![How do we know if a CME is Earth directed and when it's going to arrive? | Help | SpaceWeatherLive.com How do we know if a CME is Earth directed and when it's going to arrive? | Help | SpaceWeatherLive.com](https://www.spaceweatherlive.com/images/help/CME_full_halo.gif)
How do we know if a CME is Earth directed and when it's going to arrive? | Help | SpaceWeatherLive.com
![This illustration shows a coronal mass ejection (CME) blasting off the Sun's surface in the direction of Earth. Such storms can produce aurora and technological effects on Earth. - SpaceFlight Insider This illustration shows a coronal mass ejection (CME) blasting off the Sun's surface in the direction of Earth. Such storms can produce aurora and technological effects on Earth. - SpaceFlight Insider](https://www.spaceflightinsider.com/wp-content/uploads/2016/03/SWstorm_SDO_lines.jpg)
This illustration shows a coronal mass ejection (CME) blasting off the Sun's surface in the direction of Earth. Such storms can produce aurora and technological effects on Earth. - SpaceFlight Insider
![How do we know if a CME is Earth directed and when it's going to arrive? | Help | SpaceWeatherLive.com How do we know if a CME is Earth directed and when it's going to arrive? | Help | SpaceWeatherLive.com](https://www.spaceweatherlive.com/images/help/protonenstorm/EN_protonenstorm.jpg)
How do we know if a CME is Earth directed and when it's going to arrive? | Help | SpaceWeatherLive.com
![CME produced by long duration C5.6 solar flare expected to reach Earth early on July 23 - The Watchers CME produced by long duration C5.6 solar flare expected to reach Earth early on July 23 - The Watchers](https://watchers.news/wp-content/uploads/2022/07/c5-6-solar-flare-july-21-2022-f.jpg)
CME produced by long duration C5.6 solar flare expected to reach Earth early on July 23 - The Watchers
![How do we know if a CME is Earth directed and when it's going to arrive? | Help | SpaceWeatherLive.com How do we know if a CME is Earth directed and when it's going to arrive? | Help | SpaceWeatherLive.com](https://www.spaceweatherlive.com/images/help/CME.gif)