5/28/17: Aurora Borealis over Loveland Pass, CO

The Kp Index started roaring last night around 8 PM (6 predicted to 8 in the next four hours), so we rolled up to Loveland Pass (11,990′ MSL) to see what we could see. Unfortunately no flare-ups, but great green/magenta near northern horizon, with some brief pillars. Conditions were 21 degrees with scattered clouds, not your typical ‘nearly June’ weather here in CO…
 

270-degree panorama of aurora and Milky Way over Loveland Pass, CO. Glow of lights from Denver over mountain in center, Arapahoe Basin lit up from snowcats (right horizon).

 

 

 

And a 1h25m time-lapse, started just after midnight:

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