British visitors Tom and Laura Palmer said they were stuck in Bermuda until Thursday because British Airways cancelled inbound and outbound flights to the island until the stormy weather cleared.
"We don't mind staying a few more days despite the weather," said Tom Palmer, a resident of Crawley, England. British Airways "are paying, so we're fine."
Local painter Coolridge Eve said he was mostly unconcerned about the storm but he had earlier checked a shark oil-based barometer that Bermudians traditionally use to gauge rough weather.
"I looked at my shark oil this morning; it told me something was brewing up. How close it is, I don't really know, but I'm ready," Eve said.
Bermuda, an offshore financial haven and tourist destination, has strong building codes and residents are accustomed to storms.
U.S. forecasters said Gabrielle was likely to drop 2 to 4 inches (6-13 centimeters) of rain on the island, with up to 6 inches (18 centimeters) possible in isolated spots. Storm surge of up to 3 feet (nearly 1 meter) above normal tide levels was predicted.
Farther east out in the Atlantic, Tropical Storm Humberto was nearly a hurricane as its maximum sustained winds increased to 70 mph (110 kph). It currently poses no threat to land.