The current forecast for tonight is as high as 8-9, near the top of the chart. If the geomagnetic storm arrives as advertised, auroras may be seen as far south as Texas. Certainly, anyone living in the northern tier of the United States would have a decent shot tonight.

The northern lights are expected to be visible over much of the northern half of the country Thursday, including in Massachusetts, according to a prediction from NOAA. "The aurora may become visible over much of the northern half of the country, and maybe as far south as Alabama to northern California," NOAA said.

A large chunk of northern U.S. states could get a glimpse at the northern lights on Thursday night, according to a National Oceanic and Atmospheric Administration forecast, which predicts a strong showing of the natural phenomenon amid a potentially severe geomagnetic storm.