• 

  Now Playing
  Waterfall thunders down behind house in Montour Falls

  00:12
• 

  Now Playing
  At least 37 dead after highway bridge collapses in Genoa

  00:19
• 

  Now Playing
  Camper floats down flooded Pennsylvania creek

  00:15
• 

  Now Playing
  Volunteers clean up waves of trash from Manila Bay

  00:19
• 

  Now Playing
  Flash flood waters tear road apart in Pennsylvania

  00:37
• 

  Now Playing
  Aerial video shows devastating flooding in Gilberton, PA

  00:14
• 

  Now Playing
  Heavy thunderstorms could be cause of bridge collapse that killed dozens

  01:00
• 

  Now Playing
  24 injured in 5.0 magnitude earthquake in southwest China

  00:33
• 

  Now Playing
  Rapid flooding consumes Saint Clair, Pennsylvania

  00:20
• 

  Now Playing
  King of Prussia mall covered in floodwaters after heavy storm

  00:15
• 

  Now Playing
  Mob of emus desperately search for water as drought worsens

  00:13
• 

  Now Playing
  Firenado whirls in midst of Holy Fire

  00:14
• 

  Now Playing
  Timelapse shows haboob sweep across Phoenix Sky Harbor Airport

  00:15
• 

  Now Playing
  Chimpanzees keep themselves amused with bucket of water

  00:20
• 

  Now Playing
  Lightning recorded as dust storm rolls into Arizona

  00:12