Humberto, a sprawling Category 3 storm, is packing sustained winds of 115 mph as it pushes east-northeast about 285 miles west of Bermuda, the National Hurricane Center said Wednesday at 5 a.m.
Two to 4 inches of rain, dangerous waves along south-facing beaches and a storm surge of 1 to 3 feet also are expected, the hurricane center said.
And Tropical Storm Jerry, still far east of the Leeward Islands, could strengthen into a hurricane by week's end.
Humberto could strengthen as it passes Wednesday into Thursday morning less than 100 miles to the island's north, Jones and Garrett said.
"Weather should begin to deteriorate in Bermuda later today," the hurricane center said early Wednesday.