NOAA's Space Weather Prediction Center (SWPC) issued a Level G2 Geomagnetic Storm Watch for Saturday and Sunday, noting that a coronal mass ejection (CME) should arrive at Earth about 1 p.m. EST Saturday. A CME is a large burst of plasma from the Sun’s corona.
A G2-level storm can cause problems for high-latitude power systems, can require course corrections for objects orbiting the planet and create problems with high-frequency radio waves.
This level of storm can also lead to the Aurora Borealis, commonly called the Northern Lights, being visible farther south in the U.S. than usual.
Experts said people should get as far away from city lights as possible to get the best view of the Northern Lights.
This appears to be the third geomagnetic storm to hit Earth this week.
The Sun’s activity has been increasing as it approaches the Solar Maximum of its 11-year solar cycle, which should peak sometime next year.