Former Connecticut weatherman Geoff Fox uploaded this video to YouTube a few hours ago.
On Reddit, Fox wrote that his dad suffers from "essential tremors."
Updated: 31 December 09:33 a.m. GMT: Fox got in touch with BuzzFeed News to tell us about his dad.
"My dad is proof when you're 89 you can still stay sharp and love life. Having him here for three weeks was an incredible gift."
Alan White is a news editor for BuzzFeed News and is based in London.
Contact Alan White at email@example.com.
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