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"The exercise was held from May 8 to 9, 2024, at the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, and at a Federal Emergency Management Agency (FEMA) site in Denver, Colorado."

Article refers to a PDF of the report it's based on:

https://www.jhuapl.edu/sites/default/files/2025-04/Space-Weather-TTX-Report-Summary-v3-FINAL.pdf

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[-] curbstickle@lemmy.dbzer0.com 1 points 1 day ago* (last edited 1 day ago)

At that point, that grid connection will be the least of anyone's worries. The storm in Quebec in... 1990? Ish. tripped breakers, and shut things down for like a day.

A storm on the scale youre talking about I am pretty sure would wipe out satellites (maybe even take them down due to atmospheric drag?), impact cables other than power like copper laid for internet and phone, etc. Grid-connected power or not you'd be severely impacted and potentially at risk.

[-] Aceticon@lemmy.dbzer0.com 1 points 20 hours ago

Oh yeah, a large enough solar mass ejection in such a direction that it would directly hit planet Earth would be extremely bad.

this post was submitted on 19 May 2025
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