
Unsettled geomagnetic activity triggered by high-speed solar winds could spark northern lights over parts of the U.S. tonight (June 26–27), according to the National Oceanic and Atmospheric Administration's Space Weather Prediction Center (NOAA SWPC).
A colossal coronal hole on the sun has rotated to face Earth and is currently sending a stream of high-speed solar wind our way. As the solar wind slams into our planet's magnetic field, it disrupts geomagnetic conditions, which in turn can lead to geomagnetic storms and vivid auroras.