At 45 seconds, load up social media. (although I actually missed the warnings this time, was focused on work) At least assuming the number is only 7.x.
If it were 8+ or somewhat closer, I'd get under my desk. (then pull up social media on my phone)
How does loading up on social media help?
Maybe turn off any gas stove, secure any dangerous tools, stop your car, that kind of thing.
Standing underneath a doorframe is also advisable.