Another storm is brewing in the Caribbean. Here are what areas should be on alert

5 hurricanes have slammed into the US Gulf Coast this year.

ByMary Gilbert, CNN Meteorologist CNNWire logo
Wednesday, November 13, 2024
Tropical system developing in Caribbean Sea
We're keeping an eye on a tropical system developing in the Caribbean Sea. If named, it would be Storm Sarah.

A new tropical system with the potential become Tropical Storm Sara is expected soon and is worth monitoring for impacts in the Caribbean, Mexico and United States.

Powerful, storm-disrupting upper-level winds protected the Gulf Coast from Hurricane Rafael last week, but there could be an opening for tropical trouble to reach the US next week.

Forecast models (each represented by a different colored line) project where a tropical system could track over the next six days.
Forecast models (each represented by a different colored line) project where a tropical system could track over the next six days.
CNN Weather via CNN Newsource

It's another example of an Atlantic hurricane season that hasn't played by the rules. Tropical activity should be winding down in November, but this could be the third named storm this month instead thanks to exceptionally warm water wrought by climate change.

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For now, it's a fledgling area of stormy weather just south of Jamaica with a high chance of becoming a tropical depression over the next 48 hours, according to the National Hurricane Center.

The system could strengthen into a tropical storm or a hurricane as it meanders over the very warm water of the western Caribbean Sea - the same body of water that fueled Rafael. It should drift toward Central America and stall in the area over the weekend and into early next week.

Forecast scenarios diverge drastically from there and hinge on how close the system gets to the Central American coast.

US threat?

There are a few potential scenarios on the table for how formidable the storm could be or whether it could reach the US next week.

It could make landfall in Honduras or Nicaragua this weekend and deteriorate while over land, cut off from the warm water fueling it. This scenario would bring strong winds and a deluge to Central America but could keep the storm away from the US.

A storm that remains very close to the coast of Central America but doesn't make landfall would still unleash heavy rainfall there and could eventually emerge in the southern Gulf of Mexico next week. It would likely emerge as a weaker storm, which could lessen the blow if it were to reach the US.

But if the system stays just a bit farther off the coast and over tremendously warm water, it could strengthen considerably - and possibly rapidly intensify - while it stalls.

Sea surface temperatures in the Caribbean are currently second-warmest on record - just behind 2023's record-breaking heat. They're warmer than they should be at the peak of hurricane season and could continue to produce unusually strong storms. Warmer bodies of water are fueling stronger storms and more rapid intensification as the world warms due to fossil fuel pollution.

It could then make a gradual turn to the northwest, head for Mexico's Yucatán Peninsula or Cuba and potentially reach the eastern Gulf of Mexico.

An area of stormy weather eventually expected to become Tropical Storm Sara churns in the Caribbean Wednesday morning.
An area of stormy weather eventually expected to become Tropical Storm Sara churns in the Caribbean Wednesday morning.
CNN Weather via CNN Newsource

The Gulf is record warm for this time of year and likewise could boost or sustain any system that reaches it.

This scenario would slam parts of Honduras, Nicaragua and surrounding areas with torrential, flooding rainfall and damaging winds for days before the system moves away early next week. Mexico's Yucatán Peninsula or Cuba could be next in line for similar impacts, depending on how strong the system becomes and how sharp of a turn it makes.

This scenario is the most troubling for the US, too. A stronger system in the Gulf of Mexico could make a run at Florida next week.

Five hurricanes have slammed into the US Gulf Coast this year.

If this system were to make landfall in the US it could challenge the latest landfalling hurricane on record. The current record rests with Hurricane Kate, which made landfall as a Category 2 storm in Florida on November 21, 1985.

Hurricane season officially comes to an end on November 30, but named storms have formed in December in the past.

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