The northern lights were on display in the Pittsburgh area on Tuesday night.
The aurora borealis — the phenomenon more commonly known as the northern lights — was spotted all across southwestern Pennsylvania, including in Butler, Indiana, Westmoreland, Washington and Venango counties.
Scientists at the National Oceanic and Atmospheric Administration’s Space Weather Prediction Center issued a “severe” geomagnetic storm alert for Tuesday. These G4 storms can produce the northern lights, but can also interrupt radio, TV, satellite and cell phone communications…