Helene, Hurricane Isaac, Tropical Storm Joyce

Caribbean disturbance may develop as it moves towards the Gulf of Mexico

(This story has been updated to add new information.)

Helen It may have turned into a post-tropical cycle as of Friday night, but we have Hurricane Isaac and Tropical Storm Joyce keeping the tropics busy, even busier, throughout the weekend.

Neither Isaac nor Joyce pose a threat to the United States.

The National Hurricane Center is monitoring five systems in the Atlantic basin, including one in the Caribbean Sea Gulf Coast residents should watch closely.

➤ Spaghetti models for Hurricane Isaac

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Hurricane Helene made landfall According to , it was a Category 4 storm with winds of 140 mph along Florida’s Big Bend coastline at 11:10 p.m. ET on Thursday. National Hurricane Center.

Helene’s eye Shot in Taylor County Just east of the mouth of the Aucilla River, about 10 miles west-southwest of Perry.

A track similar to Helene’s is an area of low pressure that may form over the western Caribbean Sea next week. Conditions will become more favorable for development as we move towards the Gulf of Mexico towards the end of next week.

The next named storm of the 2024 Atlantic hurricane season is Kirk.

Here is the National Hurricane Center’s latest update as of 8 p.m. ET on Friday, September 27:

The road to Helene: Where is it and where does it lead?

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➤ Live updates: See the latest on Helene’s effects

Another hurricane out there? Here’s what you need to know about Hurricane Isaac

Location: 890 miles west of the Azores
Maximum sustained winds: 85 mph
Movement: east at 16 miles per hour

At 11 p.m. Friday, the center of Hurricane Isaac was moving east-northeast at approximately 16 mph. A gradual turn towards the northeast is expected with a slight decrease in advance rate over the next few days. The movement towards the northeast is expected to continue until Monday.

Maximum sustained winds are around 90 mph with higher gusts. Little change in strength is expected through Saturday morning, followed by gradual weakening until early next week.

Isaac is expected to become a post-tropical hurricane on Monday.

Hurricane-force winds extend outward as much as 30 miles from the center, and tropical storm-force winds extend outward as much as 150 miles.

Spaghetti models for Hurricane Isaac

Tropical Storm Joyce: What you need to know

Location: 1,905 miles east of the Northern Leeward Islands
Maximum sustained winds: 50 mph
Movement: west-northwest at 12 miles per hour

At 11 p.m. Friday, the center of Tropical Storm Joyce was moving west-northwestward at approximately 12 mph, and general motion with a decrease in forward speed was expected by early Sunday. A slow turn to the northwest and north was expected later Sunday and Monday.

➤ Spaghetti models for Tropical Storm Joyce

Satellite-derived wind data shows maximum sustained winds remaining around 50 mph, with higher gusts. Little change in power is expected through Saturday. Weakening is expected to begin from Sunday, with Joyce expected to fall to lows late Monday.

Tropical storm force winds extend outward from the center up to 105 miles.

Spaghetti models for Tropical Storm Joyce

What else is out there and how likely are they to get stronger?

Western Caribbean: A low pressure area may form over the Western Caribbean Sea by the middle of next week.

Environmental conditions are expected to be conducive to slow development thereafter, as the system moves generally northwestward and potentially enters the Gulf of Mexico by the end of next week.

Chances of formation for 48 hours: low, close to 0 percent.
Lineup chance over 7 days: low, 30 percent.

A broad and extended area of low pressure associated with a tropical wave is producing limited shower activity near and west of the Cabo Verde Islands.

Environmental conditions appear favorable for the gradual development of this system, and a tropical depression may form as it moves westward and then northwestward at about 10 mph across the eastern and central tropical Atlantic next week.

Chance of formation for 48 hours: low, close to 10 percent.
Lineup chance over 7 days: low, 40 percent.

What do the colored areas on the NOAA map mean?

National Hurricane Center Deputy Director Jamie Rhome said the shaded areas on the tropical outlook map show “areas where a tropical cyclone, which could be a tropical depression, tropical storm or hurricane, could develop.”

The colors make it clear how likely a system with low yellow, medium orange, and high red could develop.

The National Hurricane Center generally does not issue tropical advisories until a named storm has formed, but there is one exception.

“If a system is close to land and has the potential to develop, the National Hurricane Center will not wait before issuing advisories, even if the system has not developed into a true storm. This gives residents time to prepare,” Rhome said.

Who is likely to be affected?

Helene brings plenty of rain to parts of the Central and Southern Appalachians. Helene is expected to produce additional rainfall amounts of 3 to 6 inches, leading to total rain accumulations of 6 to 12 inches; isolated totals are around 20 inches

➤ Extreme rainfall forecast

Waves caused by Isaac are affecting parts of the Bermuda coast and may spread to the Azores by the end of this week.

Tropical Storm Joyce is not expected to affect Florida or the United States

It is too early to determine whether other disturbances will have any impact on Florida or the United States.

Forecasters urge all residents to continue monitoring the tropics and always be prepared. This advice is particularly important for what is expected to happen. Very active hurricane season.

Weather watches and warnings issued in Florida

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When does hurricane season end?

Atlantic hurricane season runs from June 1 to November 30.

The Atlantic basin includes the northern Atlantic Ocean, the Caribbean Sea, and the Gulf of Mexico.

When is the peak of hurricane season?

The peak of the season was Sept. 10, with most activity occurring between mid-August and mid-October, according to the Hurricane Center.

National Hurricane Center map: What are forecasters watching now?

Systems currently monitored by the National Hurricane Center include:

Interactive map: Hurricanes and tropical storms passing near your city

Extreme rainfall forecast

What’s next?

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