Tropical Storm, Tropical Storm Isaac | featured news

Isaac was on the verge of ballooning into a hurricane Tuesday that could flood the coasts of four states with storm surge and heavy rains on its way to New Orleans, where residents hunkered down behind levees fortified after Katrina struck seven years ago this week.

As the seventh anniversary of Hurricane Katrina's landfall approaches, New Orleans -- and much of the Gulf Coast -- is preparing to put into practice the lessons learned from that defining storm. Tropical Storm Isaac is following a path eerily similar to Katrina's in 2005.

Airlines cancelled hundreds of flights as Tropical Storm Isaac lashed southeastern Florida Sunday, with service not expected to resume fully until late Monday. The airports in Miami and Fort Lauderdale were hit the hardest, cancelling 589 flights - the vast majority of the 742 U.S. flights grounded overall because of the storm as of Sunday afternoon, according to the flight-tracking service FlightAware.

The death toll from Tropical Storm Isaac has climbed to nine after authorities in the Dominican Republic reported two deaths Sunday....

Tropical Storm Isaac is likely to be a hurricane when it hits the Florida Keys Sunday, strengthening to a Category 2 as it heads northwards towards the Gulf Coast later.

Tropical Storm Isaac headed toward the Dominican Republic and Haiti on Friday, continuing its march across the Caribbean and prompting Florida officials to urge residents to prepare now.

Tropical Storm Isaac's outreach is expected to be felt in Florida by late Sunday night -- just as Mitt Romney , Paul Ryan and the GOP faithful are gathering in Tampa for the Republican National Convention.

Tropical Storm Isaac churned away in the Atlantic Ocean early Wednesday, forecast to strengthen into a hurricane and posing a potential threat to the GOP convention in Florida next week.