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‘Significant intensification’ predicted for Caribbean storm as it tracks toward Gulf of Mexico and Florida


(CNN) - A potent tropical system is churning in the Caribbean on Friday, poised to strengthen significantly as it tracks north toward the Gulf of Mexico. Forecasts show the system intensifying into a category 3 as it approaches Florida next week, where it could become the first major hurricane for the state since 2018.

The system, Tropical Depression Nine, formed early Friday morning over the central Caribbean Sea and is likely to become the season's next named storm, according to the National Hurricane Center. It could be given the name Hermine or Ian, depending on when it strengthens to tropical storm status.

Nine had sustained winds of 35 mph and was about 515 miles east-southeast of Jamaica late Friday morning as it tracked west-northwest at 14 mph. While the storm is expected to undergo slow strengthening over the next couple of days, forecasters at the National Hurricane Center are now warning that rapid intensification is possible -- if not likely -- as it passes over the very warm waters of the Caribbean and the southeast Gulf of Mexico.

If the system strengthens to a category 3 or higher before reaching Florida, it would be the first major hurricane to make landfall there since Hurricane Michael in 2018, which was a monster category 5 storm when it collided with the Florida panhandle. Michael also underwent rapid intensification before it made landfall -- a phenomenon that has been made more likely as ocean temperatures warm due to the climate crisis.

The National Hurricane Center forecast predicts the system will strengthen into a tropical storm on Friday. Due to the formation of Tropical Depression Ten late Friday morning in the far eastern Atlantic, Tropical Depression Nine could be named Hermine or Ian, depending on how quickly Ten strengthens.

"Early next week the system is forecast to move near or over western Cuba as a strengthening hurricane and then approach the Florida peninsula at or near major hurricane strength, with the potential for significant impacts from storm surge, hurricane-force winds, and heavy rainfall," the Hurricane Center noted Friday morning.

Tropical storm-force winds could begin to impact southwest Florida early Tuesday, with landfall possible on Wednesday. The exact timing and location of the storm's landfall will depend highly on its final path, which could shift in the coming days.

In the short term, Nine is forecast to bring heavy rain to Aruba, Bonaire, Curacao, northern Venezuela and northern Colombia which could lead to flash flooding and mudslides across the islands.

The system is then forecast to gain strength, intensifying into a tropical storm as it tracks toward Jamaica and the Cayman islands. Tropical storm watches and warnings are likely to be issued for these locations within the next 24 hours.

Forecast rainfall totals:

  • Aruba, Bonaire, and Curacao: Additional 1 to 2 inches
  • Northern Venezuela: 2 to 5 inches
  • Northern Colombia: 3 to 6 inches
  • Jamaica: 4 to 8 inches with local maximum up to 12 inches
  • Cayman Islands: 4 to 8 inches
  • Southern Haiti and Southern Dominican Republic: 2 to 4 inches with local maximum up to 6 inches

After passing through the Caribbean this weekend, the system is forecast to track near or over western Cuba as a hurricane and enter the Gulf of Mexico early next week.

"The model guidance early on is in fairly good agreement, but larger across-track spread begins to take shape by 48 hours," the National Hurricane Center said. "There is still a healthy amount of uncertainty in the track forecast at the day 4-5 time frame."

Both major weather forecast models, the American and European, currently show the system tracking into the Gulf of Mexico early next week; however, the American shows a more westerly track and the European shows a more easterly track.

Friday morning, the European model showed the storm over the Florida Keys on Tuesday, impacting much of southern Florida. The American model showed the storm impacting much of the west-central coast of Florida on Wednesday.

The official forecast track from the National Hurricane Center splits the difference between the weather forecast models, showing the storm approaching the Florida peninsula late Tuesday night or early Wednesday morning.

Regardless of where the storms ends up tracking, conditions in the Gulf are favorable for the system to strengthen, and it will do that very rapidly, Maria Torres, hurricane center spokesperson, told CNN.

It has been a slow start to what was forecast to be an above-average hurricane season. Only one storm has made landfall in a US territory, and no hurricane has made landfall or threatened the contiguous United States.

Now, a week past the peak of hurricane season, the tropics seem to have woken up, and forecasters are concerned people have let down their guard.

"After a slow start, the Atlantic hurricane season has ratcheted up quickly," Phil Klotzbach, research scientist at Colorado State University, tweeted.

"People tend to lower their guard and think, oh, yeah, we're out of the woods," Torres said. "But in reality, the season continues. We are still in September; we still have October to go. Anything that forms over either the Atlantic or the Caribbean is something that we need to keep monitoring very closely."

The Atlantic hurricane season ends November 30.

No matter what, if you live in the Caribbean, Florida and other states along the Gulf Coast, pay attention to the updated forecasts this weekend into early next week.

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