On Sunday, Hurricane Humberto was about 785 miles (1263 km) west of Bermuda and was moving northeast at approximately 3 mph (4.8 kph), the hurricane center reported.
Humberto is also causing rough surf and unsafe rip currents along the U.S. Atlantic coast from central Florida northward to North Carolina.
Bermuda's Emergency Measures Organisation (EMO) has said it has begun to monitor the track of Humberto.
Weather forecasters say Hurricane Humberto will lash Bermuda with high winds and heavy rain later this week.
Meanwhile, two more tropical waves are being tracked by the National Hurricane Center.
The rainfall is expected to hit Bermuda late on Wednesday or early Thursday.
The majority of the showers, thunderstorms and strongest winds associated with Humberto were skewed to the north and east of the storm's center, which has largely spared the areas of the northern Bahamas that were hit by Hurricane Dorian, said Alex Sosnowski, AccuWeather senior meteorologist, in a report filed September 15.More news: Arsenal draw down to me, says Sokratis Papastathopoulos
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Additional strengthening is forecast through Wednesday, when the eye of the storm is expected to be out in the open Atlantic.
Humberto is forecast to turn more to the east today and tonight and pick up speed.
Along with this, the advisories have issued a warning of high rip current risks through Monday evening at beaches from northeast Florida to North Carolina.
There are two other areas (besides Humberto) being watched for development.
But the hurricane could create rough surf and unsafe rip currents in the Southeast, forecasters say.
Thousands of victims of Hurricane Dorian crowded into shelters as a tropical cyclone carrying heavy rain and strong winds threaten the already devastated Bahamas.
And showers and thunderstorms have increased in association with an area of low pressure over the central tropical Atlantic. The death toll now stands at 50 but search and rescue teams are still searching through destroyed neighborhoods.
"Conditions are expected to be conducive for gradual development and a tropical depression is likely to form within the next few days", Bridges said.