Scientists have updated their forecast for the current solar cycle, which usually lasts about 11 years. Solar activity is now expected to peak earlier and to be stronger than previously thought.
A previous forecast predicted a geomagnetic storm happening Wednesday and Thursday, but the sun's activity has greatly weakened over the past few days.
The Northern Lights, known scientifically as auroras borealis, are triggered by geomagnetic activity from the sun. They typically occur closer to the North Pole, near Alaska and Canada.
An article suggests the natural light show starts when disturbances on the sun pull on Earth's magnetic field, creating cosmic waves that launch electrons into the atmosphere to form the aurora.