Tropical Storm Danielle has become the fourth named storm of the Atlantic hurricane season, and will likely become a hurricane over the next 24 hours, according to the National Hurricane Center (NHC).

The storm is currently out in the Atlantic, more than 850 miles west of the southernmost Cape Verde Islands, according to catastrophe modeler Risk Management Solutions (RMS). The NHC said the storm is moving west-northwest across the Atlantic at around 16 miles per hour and there is no immediate threat to land.

The storm's eventual threat to Bermuda and the U.S. East Coast is not yet known, the NHC said.

Danielle currently has maximum sustained winds of 65 MPH, and additional strengthening is forecast over the next 48 hours, the NHC said. The storm is expected to become a hurricane by late Tuesday and "could become a hurricane by this evening," according to the NHC.

RMS said model runs are predicting the storm will continue to intensify into a Category 2 hurricane on the Saffir-Simpson Hurricane Wind Scale.

The NHC said the storm has a one-in-four chance of becoming a major hurricane over the next five days based on historical NHC intensity errors.

The storm is expected to continue its west-northwest track and then make a turn toward the northwest by Wednesday.