Today is the choose your apocalypse apocalypse blogfest!
In my version the skies darken, the animals go nuts, the power goes off, just like all the stuff in the movies... EXCEPT in my version really loud Justin Beiber music is transmitted through all electrical outlets 24 hours a day, louder than even the best ear plugs can dull. The music causes your brain to slowly die, turning you into a zombie.
Estimated time of the first Zombie transformation is 3 hours into BeiberFest.
If you hear Beiber music, grab whatever you can carry - bottled water, first aid kits, canned food, extra food, blankets, books, candles, knives, crossbows etc, and head as far away from civilization as you can. Avoid all forms electricity. Find a quiet lake and camp out.
Daryl Dixon eventually saves the planet by taking care of Beiber.