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    Greg Egan (gregegansf@mathstodon.xyz)'s status on Wednesday, 05-Jun-2024 06:36:32 JSTGreg EganGreg Egan

    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

    In conversationabout a year ago from mathstodon.xyzpermalink

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