A significant solar storm has erupted on the surface of the sun, sending a huge burst of high-energy radiation speeding toward Earth. The impacts of the power solar flare were felt on Thursday.

NASA’s Solar Dynamics Observatory Satellite spotted the solar flare last Sunday, which released what is known as a coronal mass ejection. A CME is a huge explosion of magnetic field and plasma from the corona of the sun, which impacts the magnetosphere of the Earth and causes geomagnetic storms and aurora.

The National Oceanic and Atmospheric Administration issued a G1 geomagnetic storm watch, which refers to a minor storm. Solar flares can interfere with power grids and disrupt Earth-orbiting satellites, although a flare of this size is unlikely to cause major problems.