The other disturbance is predicted to form further out at sea in the main development region, the spot where most hurricanes form during this portion of storm season. Forecasters raised the likelihood of this tropical wave forming a tropical depression up to 50% in the next seven days, as of Monday afternoon.

Tropical Storm Dexter emerged between the Eastern Seaboard and Bermuda, as two more Atlantic low pressure systems are being tracked for development.

The storm known as Dexter developed late Sunday and was moving east-northeast on Monday, with maximum sustained winds of 45 mph, according to the National Hurricane Center.