Birth of a waterspout
On May 9, 2012, a scientist caught the birth of twin waterspouts on film.
To the ground
The twisters formed at the leading edge of severe weather that swept across Louisiana's Grand Isle.
A second on the way
The twin waterspouts lasted about 10 or 15 minutes.
Tim Osborn, a scientist with the National Oceanic and Atmospheric Administration who caught the twisters in action, said the waterspouts grew larger, and moved in tandem.
This type of waterspout is called a tornadic waterspout, since it forms in the clouds.
Bigger, not better
The twin waterspouts were accompanied by pounding rain and powerful winds.
One twister kicks up a halo of spray.
One tornado barreled across the island, cutting power and damaging homes.
It left a swath of damage a quarter-mile long and 400 feet (122 meters) across. Fortunately, nobody was injured.