World

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The interior of a home is filled with floodwater brought by Tropical Storm Isaac in Port-au-Prince, Haiti, Saturday, Aug. 25, 2012. (AP Photo/Dieu Nalio Chery)

Tropical Storm Isaac barely stirred Florida Keys residents from their fabled nonchalance Sunday, while the Gulf Coast braced for the possibility that the sprawling storm will strengthen into a dangerous hurricane by the time it makes landfall there.

Isaac was expected to cross the Keys by late afternoon, then turn northwest and strike as a Category 2 hurricane somewhere between the New Orleans area to the Florida Panhandle on Wednesday, the seventh anniversary of Hurricane Katrina.

The storm was predicted to pass west of Tampa, the site of the Republican National Convention, but it had already disrupted the schedule there because of the likelihood of heavy rain and strong winds.

Even before reaching hurricane strength, Isaac caused considerable inconvenience, with hundreds of flights cancelled at airports in Miami and Fort Lauderdale. There were scattered power outages from Key West to Fort Lauderdale affecting more than 6,000 customers, and flooding occurred in low-lying areas.

Wind gusts of 60 mph were reported as far north as Pompano Beach, north of Fort Lauderdale. But while officials urged residents in southeast Florida to stay home, that recommendation was ignored by surfers and joggers on Miami Beach and shoppers at area malls.

In Key West, Emalyn Mercer rode her bike while decked out with a snorkel and mask, inflatable arm bands and a paddle, just for a laugh. She rode with Kelly Friend, who wore a wet suit, dive cap and lobster gloves.

"We're just going for a drink," Mercer said.

"With the ones that are brave enough like us," Friend added.

Along famed Duval Street, many stores, bars and restaurants closed, the cigar rollers and palm readers packed up, and just a handful of drinking holes remained open.

But people posed for pictures at the Southernmost Point, while Dave Harris and Robyn Roth took her dachshund for a walk and checked out boats rocking along the waterfront.

"Just a summer day in Key West," Harris said.

That kind of ho-hum attitude extended farther up the coast. Edwin Reeder swung by a gas station in Miami Shores, not for fuel, but drinks and snacks.

"This isn't a storm," he said. "It's a rain storm."

With a laugh, Reeder said he has not stocked up aside from buying dog and cat food.

The forecast wasn't funny, however.

Isaac was expected to draw significant strength from the warm, open waters of the Gulf of Mexico, and with more uncertainty than usual about the path, a hurricane watch was in effect from east of Morgan City, La., to Indian Pass, Fla.

The storm was expected to make landfall as a Category 2 hurricane, meaning top sustained winds of 154 to 177 kph.

The Gulf Coast hasn't been hit by a hurricane since 2008, when Dolly, Ike and Gustav all struck the region.

Hurricane centre forecasters are uncertain of the storm's path because two of their best computer models now track the storm on opposite sides of a broad cone. One model has Isaac going well west and the other well east. For the moment, the predicted track goes up the middle.

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Associated Press writers Tony Winton in Key West, Melissa Nelson in Pensacola, Fla., and Tim Reynolds and Suzette Laboy in Miami contributed to this report.