Florida

Tropical Storm Odette could bring threatening surf to U.S. coast. Two disturbances developing

Though Tropical Storm Odette, which formed off the U.S. mid-Atlantic coast Friday afternoon, is only forecast to remain a tropical storm for a short-time, it could bring dangerous surf conditions to parts of the U.S. and Canadian coasts this weekend, according to the National Hurricane Center.

There are also two disturbances being monitored in the Atlantic — and one has a high chance of turning into a tropical depression or storm some time Saturday.

None of the systems are currently a threat to Florida.

There are two disturbances being monitored in the Atlantic Saturday, Sept. 18, 2021. One has a 90% chance of turning into a tropical depression or storm Saturday. The other is at 40%.
There are two disturbances being monitored in the Atlantic Saturday, Sept. 18, 2021. One has a 90% chance of turning into a tropical depression or storm Saturday. The other is at 40%. National Hurricane Center

As of the 11 a.m. Saturday advisory, Odette was about 235 miles southeast of Nantucket, Massachusetts. It was moving northeast at 17 mph and held its 45 mph maximum sustained winds. Tropical-storm-force winds extend outward up to 195 miles from the center.

Currently, there are no coastal watches or warning in effect. But swells generated by Odette that’ll spread northward to portions of the U.S. Northeast and Atlantic Canada coasts during the weekend could bring life-threatening surf and rip current conditions, according to the center’s hurricane specialist Richard Pasch.

Forecasters say Odette will take a faster northeast to east-northeast motion this weekend. On the forecast track, the center of Odette should pass south of Atlantic Canada on Sunday and Monday.

Odette is forecast to become a strong post-tropical low by Saturday night, the center’s hurricane forecaster Robbie Berg said in his report.

Tropical Storm Odette at 11 a.m. Saturday, Sept. 18, 2021.
Tropical Storm Odette at 11 a.m. Saturday, Sept. 18, 2021. National Hurricane Center

Two disturbances in the Atlantic

One of the two disturbances forecasters are closely monitoring was about 650 miles miles east-southeast of the northern Leeward Islands in the 8 a.m. Saturday advisory. Disturbance 1 was producing showers and thunderstorms about midway between the Lesser Antilles and the Cabo Verde Islands.

A tropical depression or tropical storm is likely to form Saturday afternoon or evening while it moves toward the west-northwest at about 15 mph. This system is expected to be near the northern Leeward Islands on Monday and Tuesday.

The disturbance’s formation chances in the next 48 hours and through the next five days are at 90%.

Right behind it is a tropical wave that is producing thunderstorms a few hundred miles south of the Cabo Verde Islands.

The associated showers and thunderstorms have become a little better organized since Friday, the center said, and environmental conditions appear conducive for further development during the weekend.

A tropical depression could form while the system moves northwestward at about 10 mph to the west of the Cabo Verde Islands before it reaches cooler waters and stronger upper-level winds early next week.

This disturbance has grown to a 40% chance of formation in the next 48 hours and through the next five days.

The next storm names on the list are Peter and Rose.

This story was originally published September 16, 2021 at 7:01 AM with the headline "Tropical Storm Odette could bring threatening surf to U.S. coast. Two disturbances developing."

Howard Cohen
Miami Herald
Miami Herald consumer trends reporter Howard Cohen, a 2017 Media Excellence Awards winner, has covered pop music, theater, health and fitness, obituaries, municipal government, breaking news and general assignment. He started his career in the Features department at the Miami Herald in 1991. Cohen is an adjunct professor at the University of Miami School of Communication. Support my work with a digital subscription
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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