in the morning. those are very dangerous. you don't expect them. you're probably asleep. your weather radio will wake you up. if you have one, make sure it is working tonight if you live in the plains, jake. >> all right. thank you so much, chad. our second story "outfront," waiting to implode. we're talking about underground cavities. ticking time bombs that could suddenly turn into deadly sink holes. in march as you probably remember a florida man died after his bed was swallowed by a sink hole that opened up under his house. now that was a naturally occurring disaster. but in new mexico, a man made danger is threatening to swallow up a big chunk of one town and its residents. we have an "outfront" investigation. >> reporter: part of this dusty new mexico landscape disappeared back in 2008 into two massive sink holes. triggering shock waives of confusion and anxiety that more would follow. >> i think it's quite likely that a sink hole will form here. >> it's not a matter of if, it's