Why Is Tropical Storm Barry Such a Threat? The Science Behind the Brewing Hurricane

Tropical Storm Barry, which is forecast to become Hurricane Barry as it hurls forward on a collision course with the Louisiana coast, has experts worried about potentially catastrophic effects, from storm surge to a potential breach of levees meant to prevent flooding.

"The more information we get, the more concerned we are," said Louisiana Gov. John Bel Edwards at a news conference Thursday as Barry gathered strength in the Gulf of Mexico. "It’s going to be an extreme rain event.

Tropical Storm Barry, which is forecast to become Hurricane Barry as it hurls forward on a collision course with the Louisiana coast, has experts worried about potentially catastrophic effects, from storm surge to a potential breach of levees meant to prevent flooding. "The more information we get, the more concerned we are," said Louisiana Gov. John Bel Edwards at a news conference Thursday as Barry gathered strength in the Gulf of Mexico. "It’s going to be an extreme rain event.