By 5 a.m. Eastern Time, the planetary K-index (Kp) had risen to 8—just below the level 9 typically needed for significant aurora visibility in the Carolinas.

If the lights are visible Sunday night, the moon shouldn’t offer much interference. It will be less than half full, and it is at one of its farther points away from Earth.

What scientists call “a geomagnetic storm watch” is in effect for Sunday night. In plain language, that means: Look for vibrant northern lights across the nation — visible anywhere in ...

NASA Astronaut Unexpectedly Captures a Stunning Video of the Northern Lights from Space. ... Then, a display of beautiful and often vibrant colors results and lights up the night sky.