[dbelson]

Doesn't appear to be a complete power failure, as Cloudflare Radar shows only a partial drop in traffic from Cuba: https://radar.cloudflare.com/traffic/cu?dateRange=1d

[lkbm]

If you've got generators for towers and people use their mobile phones, I'd expect traffic to continue. 37% is a little higher than I'd expect, but I don't know the make-up of traffic.

[ratg13]

Rolling power outages are the norm in Cuba. I would say that number is about right.