With sustained winds of 80 miles per hour, Isaac is a hurricane now, bearing down on the Gulf Coast shores of Louisiana, Mississippi, Alabama and the Florida Panhandle -- a slow-moving giant carrying violent thunderstorms along its edges and heavy rainful end to end.
Isaac arrives nearly seven years to the day after Katrina. Itbegan pounding the Gulf Coast on Tuesday afternoon with heavy rain and strong winds, gaining strength as the day wore on and prompting warnings about even more dangerous hours ahead.
