Tropical threat in Caribbean, Gulf of Mexico continues to grow, but uncertainty in forecast remains

Millions of people living along the Gulf Coast are being urged to make sure preparations are in place as the next tropical threat to the U.S. brews in the Caribbean, and there are increasing signs that the ingredients needed for a tropical storm or hurricane to form are coming together.

A number of computer forecast models depict a strong tropical storm or hurricane in the Gulf of Mexico by the end of this week, but there still remains a lot of uncertainty in the forecast, with several potential outcomes.

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This graphic shows the develpment chances in the western Caribbean Sea and southern Gulf of Mexico.
(FOX Weather)

 

The development odds for the system have been steadily increasing, and the National Hurricane Center (NHC) says there is a high chance of tropical development in the western Caribbean Sea or southern Gulf of Mexico over the next seven days.

“I really just want you to be on guard, really all the way from Texas to Florida for tropical development,” FOX Weather Meteorologist Michael Estime said.

The NHC says the broad area of low pressure will likely form over the next few days over the northwestern Caribbean Sea and the adjacent areas of Central America.

“Thereafter, gradual development of this system is expected, and a tropical depression is likely to form as the system moves slowly northward across the northwestern Caribbean Sea and Gulf of Mexico through the end of the week,” the NHC said.

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Building a weather puzzle

This graphic shows the growing tropical threat in the Caribbean and Gulf of Mexico.
(FOX weather)

 

Pieces of the puzzle are going to be slow to come together.

There are strong indications a weather pattern known as the Central American Gyre will form in the coming days.

The gyre is a sprawling area of low pressure that feeds off moisture streaming in from the Pacific Ocean and forms near or over Central America. At its core, it is a heavy rain producer with impacts extending outwards hundreds of miles and leading to threats of torrential rainfall, flooding and landslides for more than a dozen countries centered in and around Central America.

WHAT IS THE CENTRAL AMERICAN GYRE?

What we know about the growing tropical threat in the Caribbean and Gulf of Mexico.
(FOX Weather)

 

However, organized low-pressure centers can develop into tropical storms or even hurricanes within the larger gyre if water temperatures and upper-level winds become favorable for tropical development. Current water temperatures in the Caribbean are near the record-warm levels set last season. 

The ultimate fate of tropical development will depend on where the gyre forms, how strong it becomes and the atmospheric steering – or blocking – patterns occurring in the southern U.S.