There is a chance of green skies tonight in Minnesota.
A G4 severe geomagnetic storm is under way, according to the NOAA Space Weather Prediction Center, due to two ejections from the Sun on March 15. Aurora may be visible, particularly in northern Minnesota late tonight. Cloudy skies might block the sight.
Power companies are monitoring for electrical fluctuations due to the storm. There are no reports yet of damage to satellites in space.