Noctilucent clouds in motion
On the night of June 21, 2016, photographer Derek Mellott from the town of Gibbons, Alberta, Canada recorded this fantastic display of noctilucent clouds (NLCs).
"They were the brightest I have ever seen," he said. "It seemed like a good time to record a time lapse."
Video courtesy Derek Mellott
NLCs are not fully understood and are a recently-discovered meteorological phenomenon; there is no record of their observation before 1885.
They are most commonly observed in the summer months at latitudes between 50° and 70° north and south of the equator. NLCs used to be confined to Polar latitudes but have recently started brightening and spreading towards the equator. Their occurrence is also increasing in frequency.
They can form only under very restrictive conditions and their occurrence can be used as a sensitive guide to changes in the upper atmosphere.
Featured image credit: Derek Mellott
If you value what we do here, create your ad-free account and support our journalism.
Your support makes a difference
Dear valued reader,
We hope that our website has been a valuable resource for you.
The reality is that it takes a lot of time, effort, and resources to maintain and grow this website. We rely on the support of readers like you to keep providing high-quality content.
If you have found our website to be helpful, please consider making a contribution to help us continue to bring you the information you need. Your support means the world to us and helps us to keep doing what we love.
Support us by choosing your support level – Silver, Gold or Platinum. Other support options include Patreon pledges and sending us a one-off payment using PayPal.
Thank you for your consideration. Your support is greatly appreciated.
Commenting rules and guidelines
We value the thoughts and opinions of our readers and welcome healthy discussions on our website. In order to maintain a respectful and positive community, we ask that all commenters follow these rules:
We reserve the right to remove any comments that violate these rules. By commenting on our website, you agree to abide by these guidelines. Thank you for helping to create a positive and welcoming environment for all.
Did you see the hole in the clouds. toward the end of the video. That is the HARP in action.