The storm that took over the Alaskan skies last night was pretty impressive. The entire sky lit up to the point that the snow on the ground glowed green.

I heard that last night’s magnetic storm was rated a Kp7. The Kp index rates the magnitude of a geomagnetic disturbance. A 0, 1 or 2 is considered “Quiet”. A Kp3 is “Unsettled”. Kp4 = “Active”. Kp5 is a “Minor Storm” G1. Kp6 is a “Moderate Storm” G2, while last night’s Kp7 is considered a “Strong Storm” G3. Kp8 and Kp9 top the index as “Severe Storm” G4 and “Extreme Storm” G5, respectively.

There are some really incredible images out there online from last night’s Strong Storm. The two here are only cell phone images, and they do not do the aurora justice. It was really a phenomenal show. As you can see, we were not limited to just the green northern lights, but quite a bit of red was visible to the naked eye.

The skies were crystal clear, as expected, with temps dipping down to -32F at the cabin. I can’t wait to see if we get a second round tonight.

Happy Aurora Chasing.