NOAA projected Saturday night’s northern lights would have a Kp index of 3, a measure of the aurora’s strength on a scale of ...

Tonight's forecast map for the aurora shows the view line reaching as far south ... but NOAA is rating the planetary K index, also known as Kp, at a 6 out of 9. This rates the amount of ...

Per the NOAA, the Kp index may ... "the aurora will move even further from the poles and will become quite bright and active," the NOAA states. The NOAA's aurora view line predicts that most ...

NOAA's Space Weather Prediction Center (SWPC), using its experimental view line tool, forecasts that the aurora borealis may ... viewing zones based on the Kp index—a measure of geomagnetic ...

NOAA's Space Weather Prediction Center's forecast has a KP index of 5 for Wednesday night ... It's important to note that the view line indicated on the forecasts show the most southern extent ...

Parts of northern Idaho, Wyoming, Nebraska, Iowa, Illinois, New York and Pennsylvania also had a chance to view the colorful display. NOAA's Space Weather Prediction Center's forecast has a KP index ...