Northern lights were visible across metro Denver on Tuesday night as a severe geomagnetic storm lit up the skies in Colorado and throughout the U.S.

Folks spotted waves of pink, purple and green in Denver, Thornton, Broomfield, Centennial, Parker and beyond, according to photos shared on social media and captured by The Denver Post.

The National Oceanic and Atmospheric Administration’s Space Weather Prediction Center, based in Boulder, sent out an alert for a severe geomagnetic storm just after 6 p.m.

A severe geomagnetic storm is “a major disturbance in Earth’s magnetic field,” with the potential to impact electricity and satellite operations, including GPS, NOAA officials wrote in the alert.

The northern lights are expect to last into early Wednesday morning , and Coloradans can c

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