Tropical Storm Dexter continues to strengthen as it moves east-northeastward in the Atlantic, while forecasters at the National Hurricane Center are also monitoring two other disturbances that could develop in the coming days.

Tropical Storm Dexter
As of 5 a.m., Dexter was located about 405 miles south-southeast of Halifax, Nova Scotia. The storm is moving east-northeast at around 13 mph and is expected to pick up speed over the next few days.

Maximum sustained winds have increased to 45 mph, with higher gusts. The NHC says Dexter could continue to strengthen and become an extratropical cyclone within 48 hours.

No coastal watches or warnings are currently in effect.

System off the Southeastern U.S. coast
A broad area of low pressure several hundred miles off the southeastern U.S. coast is producing showers and thunderstorms.

Forecasters say environmental conditions are generally favorable for further development, and a tropical depression could form later this week or over the weekend.

The system is expected to drift westward before gradually turning northward or northeastward.

The NHC gives it a 10% chance of forming in the next 48 hours and a 40% chance over the next seven days.

Eastern Atlantic tropical wave
Another disturbance, a tropical wave in the eastern tropical Atlantic, is generating disorganized showers and storms.

Conditions are expected to support gradual development as it moves west-northwestward across the central or subtropical Atlantic.

The NHC says this system has a 20% chance of formation within 48 hours and a 60% chance over the next week.

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