The patriot missiles have been quite effective at taking out Russian missiles. I'd wait till that stuff happens before packing up and driving west. Typing this from central London which also gets Russian threats.

I think it's unlikely the Russians would nuke somewhere like that as they only have two decent cities which would be hit in retaliation. It's more likely if they went nuclear that they'd hit troops in Ukraine. Biden issued a lot of threats to Putin if they did that but under Trump I'm not sure much US retaliation would happen.