Where are Helene and Isaac headed in the Atlantic?

This story is no longer being updated. Follow AccuWeather's forecast for Isaac as it plows into the Caribbean.

Two new tropical storms have emerged in the eastern Atlantic Ocean and one could threaten some of the Caribbean Islands this week.

Hurricane Isaac and Hurricane Helene have joined Florence in the Atlantic Basin.

Helene, which is located off the west coast of Africa, brought tropical-storm-force conditions to the Cabo Verde Islands over the weekend.

Farther west, Isaac will track toward the Lesser Antilles this week.

Lesser Antilles on alert for Hurricane Isaac

The anticipated track of Isaac will put the Lesser Antilles in line for possible impacts this week.

“There is a growing consensus that this system could threaten the Lesser Antilles during the middle or latter part of the week,” AccuWeather Hurricane Expert Dan Kottlowski said.

Environmental conditions across the Atlantic will be favorable for Isaac to maintain its hurricane status as it tracks westward.

Regardless of strength, seas will become rough and dangerous for bathers and boaters along the east-facing portions of the islands as early as Wednesday.

Rain and wind would also increase during the second half of the week on the projected path of Isaac.

The current track of Isaac will take it south of the areas that bore the brunt of Irma's wrath last year.

"All interests in the Lesser Antilles should monitor the progress of this system closely," AccuWeather Senior Meteorologist Mike Doll said.

Now is the time for people on the islands to review or formulate a plan of action.

Cruise ships may have to alter their itinerary due to the storm.

People elsewhere in the Caribbean, including Puerto Rico, Hispaniola, Cuba, Jamaica and the Bahamas, and also in the United States should stay aware of the system's track beyond the Lesser Antilles.

Meanwhile, Helene passed near the southernmost Cabo Verde Islands, bringing heavy rain, gusty winds and rough seas over the weekend.

Kottlowski expects Helene to move more toward the northwest over the open waters of the central Atlantic through the week, posing no direct threat to land.

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