By @AndrewHoody Mar 5, 2021 You thought 2020 was bad? Turns out that 2021 is going to be even worse if this Nostradamus prediction is true because a zombie apocalypse is supposed to happen in 2021! The Internet is currently freaking out that Nostradamus predicted a zombie apocalypse would happen this year and the CDC has released a Zombie Preparedness Guide just in case it does happen. You can read the entire guide HERE, which might be a good idea to brush up on if you've been missing out on The Walking Dead, but here are some highlights: Water - You’ll want to store at least one gallon of water, per person, for every day you think you’ll be trapped during a zombie apocalypse so a TON of water.