Screenshot from the AuroraWatch UK app showing a strong red alert graph.

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   Mark McCaughrean (markmccaughrean@mastodon.social)'s status on Friday, 13-Sep-2024 04:51:22 JST Mark McCaughrean

   HEADS UP 👆

   A significant aurora red alert in Europe right now. If you have a clear northern horizon, go out NOW!

   There’s a slight hint of pink in the north from Heidelberg right now, seen through a lot of cloud.

   Maybe you’ll be luckier 🤞