A smattering of northern states will have a chance to see aurora borealis on Friday night—but another geomagnetic storm is expected to bring the phenomenon further south this weekend, according to a National Oceanic and Atmospheric Administration forecast, making the northern lights visible to a much larger population.

The Ohio skies have put on quite a show with the northern lights this year. So what causes them? And why are we seeing them so much? What to know.

We are currently near the peak of the 11-year solar cycle, with high solar activity giving an increased chance of seeing the Northern Lights. The current peak is expected to last until mid-2025, according to the Royal Astronomical Society.

Forecasters predicted one of the most powerful geomagnetic storms in decades, pushing the northern lights farther south.