A powerful G4 geomagnetic storm could make the northern lights visible as far south as Alabama. The best chance to see the aurora is typically between 10 p.m. and 2 a.m. in a dark location away from city lights. Another severe solar storm means another chance to see the northern lights in Massachusetts tonight, including on Cape Cod.

A G4 storm means there's a strong chance of seeing the northern lights, also known as the aurora borealis, across the United States.