Earth is still reverberating from the colossal coronal mass ejection ( CME) that struck on Jan. 19, triggering dazzling aurora displays worldwide. And while tonight's show (Jan. 20) may be somewhat more subdued, the solar storm isn't quite over — so keep your camera batteries charged and your aurora alerts on.

A NOAA forecast suggests that Northern Lights may be visible in northern U.S. states after dark on Sunday, Jan. 18, during a geomagnetic storm.

The predicted "view line," or the southernmost spot where skygazers might still be able to view the northern lights, includes more than two dozen states.

The National Oceanic and Atmospheric Administration's Space Weather Prediction Center's northern lights forecast for Friday, Jan. 16, shows a chance of seeing the aurora coast-to-coast from Washington to Maine. The latest projected view line extends as far south as Iowa.

A severe geomagnetic storm means there's a chance for a spectacular display of the northern lights over the US tonight.

The Northern Lights could return to Northern California on Monday. A coronal mass ejection, known as a CME, arrived from the sun earlier than expected on Monday and was creating a strong geomagnetic storm in Earth's magnetic field, which has the potential to impact power grids, space operations and radio and satellite communications.

Kp is an index used to indicate the severity of the global magnetic disturbances in near-Earth space, NOAA said. Kp ratings increase from zero to 9. An index of 5 or greater typically means the northern lights may be visible across Michigan. NOAA is predicting minor geomagnetic storm impacts.