Hurricane

Forecasters say Sebastien could become a Cat 1 soon. Here’s where it’s going

Tropical Storm Sebastien is continuing to strengthen as it barrels across the Central Atlantic and forecasters say it could become a Category 1 hurricane by this weekend.

Based on its current track, the system won’t be a threat to Florida or the rest of the United States.

Where is it going?

The storm, which is about 445 miles north-northeast of the Northern Leeward Islands, has sped up to nearly nine mph’s after a slight slowdown Wednesday. Its speed should increase in the next few days, according to the National Hurricane Center.

Sebastien’s maximum sustained winds are almost 60 mph with higher gusts, according to the center’s 5 p.m. advisory Thursday.

The system is forecast to see some additional strengthening in the next 24 hours and could become a Category 1 hurricane as early as Friday.

But Sebastien’s threat will be short-lived.

Forecasters say the storm has started to interact with an incoming cold front and has entered an “apparently unfavorable environment” with strong shear and cooler waters. It’s expected to begin weakening late Friday.

The system is then forecast to become an extratropical cyclone Saturday as it merges with the cold front.

But based on how close the front is to it, forecasters say the extratropical transition could occur earlier than expected.

The 18th named storm of the season formed Tuesday morning only days from the end of hurricane season on Nov. 30.

This story was originally published November 19, 2019 at 10:36 AM.

Michelle Marchante
Miami Herald
Michelle Marchante covers the pulse of healthcare in South Florida and also the City of Coral Gables. Before that, she covered the COVID-19 pandemic, hurricanes, crime, education, entertainment and other topics in South Florida for the Herald as a breaking news reporter. She recently won first place in the health reporting category in the 2025 Sunshine State Awards for her coverage of Steward Health’s bankruptcy. An investigative series about the abrupt closure of a Miami heart transplant program led Michelle and her colleagues to be recognized as finalists in two 2024 Florida Sunshine State Award categories. She also won second place in the 73rd annual Green Eyeshade Awards for her consumer-focused healthcare stories and was part of the team of reporters who won a 2022 Pulitzer Prize for the Miami Herald’s breaking news coverage of the Surfside building collapse. Michelle graduated with honors from Florida International University and was a 2025 National Press Foundation Covering Workplace Mental Health fellow and a 2020-2021 Poynter-Koch Media & Journalism fellow.  Support my work with a digital subscription
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