Fox News Weather Center

Uptick in Atlantic tropical systems may continue as new feature bears watching

In the wake of Gert, another batch of thunderstorms over the central Atlantic Ocean has the potential to develop into a tropical depression and storm this week.

Gert will turn away from North America but has potential to become the second hurricane of the 2017 Atlantic season.

Thousands of miles farther to the southeast, a plume of moisture continues to grow westward from Africa to the south-central Atlantic.

Static Animation 91L Monday Midday

This satellite animation shows the broad area of disturbed weather over the south-central Atlantic Ocean as of midday Monday, Aug. 14, 2017 (NOAA/satellite)


Interests from the northern islands of the Caribbean to the Bahamas and coastal areas in the southeastern and south-central United States may want to monitor the progress of this area of disturbed weather.

Most of the inhibitive dust, dry air and strong westerly winds aloft may remain north of the path of the area of concern through this week.

Static 91L Development Factors


"There is the potential for this large area of moisture to spawn a tropical depression or storm this week and perhaps as early as Wednesday," according to AccuWeather Hurricane Expert Dan Kottlowski.

Part of this moisture plume was responsible for producing flash flooding and mudslides in Sierra Leone at the start of this week. Hundreds were killed, according to the Associated Press.

As is often the case this time of the year, "the area of disturbed weather will move in a general west or slightly north of west path this week," Kottlowski said. "This may bring the feature close to the Leeward Islands this weekend."

Until the feature develops, future paths of movement this weekend may be very misleading and used with caution at this point, Kottlowski stated.

There are a number of factors that could pull the feature to the north on a path similar to Gert or allow a more westward track over the northern Caribbean and perhaps into the Gulf of Mexico.

The difference with the setup for Gert versus this new feature is that a path into the Caribbean and Gulf of Mexico was not a significant options for Gert.

The strength of the feature, geography and the position of other weather systems over the eastern United States and the Atlantic Ocean by next week are at the top of this list of factors that may affect movement.

For example, a weak feature may have a greater chance of staying on a westerly course for a longer period of time. A well-developed feature, such as a tropical storm or hurricane, may have a greater chance of taking a curved path to the northwest and north much sooner.

Most westward-moving, well-developed tropical systems tend to pass to the north or south of the Greater Antilles, due to the mountainous terrain.

More information on the path and strength of this new feature will become available as the week progresses.