The Arknights Lore Compendium | Catastrophes, Catastrophe Messengers, and Nomadic Cities

Everything about the Catastrophes of Terra and what people did to not get royally screwed by them.
No operators were harmed in the making of this video.
Welcome to the third video of my series, where I take some of the most commonly asked questions about Arknights lore and answer essentially everything I know about them in a short video. This time it will be about Catastrophes Catastrophe Messengers, and nomadic cities. Feel free to ask me anything that was unclear or confusing in the comments, and I'll do my best to get to all of them.
On the CN side of things, the current event doesn't really have much lore to it (fight in a competition, also Vulcan's famous). So Vigilo is where we're headed.
Anyway, these videos do take quite a bit of time to make, so I'd really appreciate it if you could drop a like or maybe even subscribe. Thanks!
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Animated sprites from Arknights SD Viewer and PRTS.
Green Screen Tornado by Footage is licenced under CC BY ( • green screen effects -... )
Smoke Effect by Robin Mikalsen is licenced under CC BY ( • black smoke green scre... )
TV Effect by ANFX // Free Media! is licenced under CC BY ( • Tv Shut Down - 4K Gree... )
IHI XF9 Engine by 防衛装備庁 - (www.mod.go.jp/..., CC BY 4.0, (commons.wikime...)
Ambience music "Late Night Radio" from Incompetech.