Article first published: Monday, Sep. 23, 2024, 10 a.m. ET

Article last updated: Tuesday, Sep. 24, 2024, 1 a.m. ET

The National Hurricane Center’s 1 am Tuesday advisory reported that the potential tropical cyclone is 115 miles west-southwest of Grand Cayman and 265 miles south-southeast of the Western Tip of Cuba, with maximum sustained wind of 35 mph. It’s moving 6 mph to the northwest.

“… the center of the system is forecast to move across the northwestern Caribbean Sea through tonight, and then over the eastern Gulf of Mexico on Wednesday and Thursday.” according to analysts. “Strengthening is expected during the next few days, and the system is forecast to become a hurricane on Wednesday and continue strengthening on Thursday as it moves across the eastern Gulf of Mexico.”

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Storm Surge Watch is in effect for:

– Bonita Beach southward to Flamingo

A Hurricane Watch is in effect for:

– Cabo Catoche to Tulum, Mexico

– Cuban province of Pinar del Rio

A Tropical Storm Warning is in effect for:

– Grand Cayman

– Rio Lagartos to Tulum, Mexico

– Cuban provinces of Artemisa, and Pinar del Rio, and the Isle of Youth

A Tropical Storm Watch is in effect for:

– Dry Tortugas

– Lower Keys west of the Seven Mile Bridge

– Bonita Beach southward to Flamingo

A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov.

A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 24 to 36 hours.

A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous.

A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours.

Interests along the northeastern Gulf Coast, including the Florida Panhandle and the Florida west coast, should monitor the progress of this system. Additional watches or warnings will likely be required today.

HAZARDS AFFECTING LAND:

RAINFALL: Potential Tropical Cyclone Nine is expected to produce total rain accumulations of 4 to 8 inches over western Cuba and the Cayman Islands with isolated totals around 12 inches. Over the eastern Yucatan Peninsula, 2 to 4 inches of rain is expected with isolated totals over 6 inches. This rainfall brings a risk of considerable flooding.

Over the Southeastern U.S., Potential Tropical Cyclone Nine is expected to produce total rain accumulations of 3 to 6 inches with isolated totals around 10 inches. This rainfall will likely result in areas of locally considerable flash and urban flooding, with minor to isolated moderate river flooding also possible.

For a complete depiction of forecast rainfall associated with Potential Tropical Cyclone Nine, please see the National Weather Service Storm Total Rainfall Graphic, available at hurricanes.gov/graphics_at4.shtml? Rainqpf and the Flash Flood Risk graphic at hurricanes.gov/graphics_at4.shtml? Ero.

STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide…

Bonita Beach to Flamingo…2-4 ft Dry Tortugas…1-3 ft Florida Keys…1-3 ft

Storm surge could raise water levels by as much as 2 to 4 feet above normal tide levels in areas of onshore winds along the southern coast of Pinar del Rio, Cuba, including the Isle of Youth.

Storm surge could raise water levels by as much as 2 to 4 feet above ground level in areas of onshore winds within the warning area along the east coast of the Yucatan Peninsula.

WIND: Hurricane conditions are possible within the watch areas in Cuba and Mexico by early Wednesday. Tropical storm conditions are expected in the warning areas in Cuba and Mexico beginning later today. Tropical storm conditions are possible in the watch area beginning on Wednesday.

SURF: Swells generated by the system will affect the southern coast of Cuba and the Yucatan Peninsula of Mexico during the next couple of days. Swells will spread northward toward the west coast of Florida and the northeastern Gulf Coast on Wednesday and Thursday. These swells are likely to cause life-threatening surf and rip current conditions.

Source: National Hurricane Center