Rain was thick 'like fog': NOLA residents

New Orleans residents were forced to seek shelter on Wednesday morning when a powerful storm hit, flooding streets and damaging homes.

Rough Cut (no reporter narration).

A low-pressure system moving westward across the northern U.S. Gulf of Mexico could form a tropical depression late on Wednesday or Thursday, with the potential to produce storm surge from Louisiana to the upper Texas coast, according to the National Hurricane Center.