Greg Egan on Nostr: Wow, lucky people in Sydney are seeing a fairly rare kind of soliton cloud known as a ...

Wow, lucky people in Sydney are seeing a fairly rare kind of soliton cloud known as a “roll cloud”: tubular clouds that appear to be rolling across the sky.

https://www.abc.net.au/news/2024-06-04/nsw-sydney-roll-clouds-explainer/103934424

https://en.wikipedia.org/wiki/Arcus_cloud#Roll_cloud