HOLT, Fla., Sept. 11, 2021—The National Hurricane Center is watching four areas with varying amounts of development possibilities.

A tropical wave over the Gulf of Campeche is expected to develop into a tropical depression tomorrow or Monday.

This would be the 14th tropical system of the season, should it form.

Further development will be possible through the middle of next week if the system remains over water.

An Air Force Hurricane Hunter mission is scheduled to investigate the system tomorrow.

By late this weekend, heavy rain will likely reach portions of the western Gulf coast, including Texas and Louisiana, through the middle of next week, according to the NHC.

This system has a 90 percent chance of further development in the next five days.

A second tropical wave located just off the west coast of Africa, continues to have a 70 percent chance of development during the forecast period.

Conditions appear generally favorable for gradual development and a tropical depression is likely to form late this weekend or early next week, according to the NHC.

Two other potential tropical systems are expected to make an appearance on opposite sides of the Atlantic Ocean.

A tropical wave will move off the west coast of Africa in a few days with possible development through the middle of next week as it moves west.

Closer to the United states, an area of low pressure is expected to form near the southeastern Bahamas in a few days.

Gradual development is possible as it moves northwestward across the western Atlantic.

Both of these future systems have a 20 percent chance of development during the five-day forecast period.

National Hurricane Center forecasts