The agency expects a minor or greater geomagnetic storm—a disturbance of Earth’s magnetic field—on Saturday, which increases the likelihood of northern lights displays being visible to more people, as the effects of a recent coronal mass ejection reach Earth, according to NOAA’s three-day forecast.

Washington State residents possibly may be in for a rare treat, a dazzling display of the northern lights, or aurora borealis, as a solar storm makes its way toward Earth.

The northern lights display should continue well into the weekend, possibly reaching down into the middle parts of the country.