How To FORECAST The Northern Lights

The northern lights, also known as aurora borealis, are a natural light display in the Earth’s sky.

They occur when charged particles from the sun collide with atoms in the Earth’s upper atmosphere.

The U.S. Space Weather Prediction Center (SWPC) is the best place to find an updated northern lights forecast.

They have both a three-day forecast and show geomagnetic activity in the last 30 minutes for current northern lights possibilities.

Geomagnetic activity is measured using the planetary K index (Kp) with a range of 0-9, with 0 being the least activity.

The higher the Kp, the greater the activity of the northern lights and the greater the range of visibility.

The SPWC states that for a 0-2 Kp, the aurora will be “far north, quite dim in intensity, and not very active.”

The northern lights will spread farther from the North Pole and become brighter once the Kp reaches the 3-5 range.

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