National Hurricane Center expects tropical depression to form soon. Will it reach Florida?

A tropical depression is expected to form over the next few days in the Atlantic, according to the National Hurricane Center. It might not be much longer before it becomes a tropical storm.

The NHC is tracking Invest 94L, which has a 70% chance to strengthen into a tropical depression over the next 48 hours.

Meanwhile, forecasters are still tracking Sean, which weakened to a tropical depression Saturday and is expected to become post-tropical by the end of the weekend.

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Excessive rainfall forecast

Coming up behind Sean is a tropical disturbance that forecasters expect to become a tropical depression. It is too early to know what impacts it could have on Florida.

If it strengthens into a named storm, it would be Tropical Storm Tammy. The following named storms in the Atlantic would be Vince and Whitney.

In the Pacific, Typhoon Bolaven was packing winds equivalent to a Category 1 hurricane (74-95 mph) hundreds of miles north and east of Japan. Some satellites anticipated the storm to reach Category 5 strength as it moves across the Pacific, and the force of the winds could affect weather on the East Coast of the United States next weekend.

Hurricane outlook: The 2023 hurricane season is not over yet with Florida vulnerable to storms into November

"In response to this storm, the jet stream will bulge northward into western Canada," AccuWeather Senior Meteorologist Joe Lundberg said. "This would translate into a period of warm, dry weather for much of the western U.S., beginning late next week."

A cool front is expected to bring temperatures in South Florida into the low to mid-60s this weekend, and the remnants of Bolevan moving through the jet stream could bring more cold temperatures to the East Coast from Oct. 20-22.

Here's the latest update from the NHC as of 5 p.m.:

Tropical Depression Sean: Where is it and where is it going?

  • Location: 1,210 miles east of the Northern Leeward Islands

  • Maximum sustained winds: 35 mph

  • Movement: northwest at 9 mph

  • Pressure: 1007 mb

  • Spaghetti models

At 5 p.m., the center of Tropical Depression Sean was located near latitude 16.5 North, longitude 44.8 West. The depression is moving toward the northwest near 9 mph.

A northwestward motion will continue through tonight, with a turn back toward the west-northwest on Sunday.

Maximum sustained winds are near 35 mph with higher gusts. Weakening is anticipated, and Sean will likely become a post-tropical remnant low on Sunday.

The estimated minimum central pressure is 1007 mb.

Spaghetti models for Tropical Depression Sean

Special note about spaghetti models: Illustrations include an array of forecast tools and models, and not all are created equal. The hurricane center uses only the top four or five highest performing models to help make its forecasts.

What else is out there and how likely is it to strengthen?

Invest 94L: Showers and thunderstorms associated with an area of low pressure several hundred miles southwest of the Cabo Verde Islands have not become any better organized this afternoon.

Environmental conditions are becoming more conducive for further development, and a tropical depression or tropical storm is likely to form within the next couple of days while the system moves west or west-northwest across the central and western tropical Atlantic.

  • Formation chance through 48 hours: high, 70 percent.

  • Formation chance through 7 days: high, 90 percent.

Spaghetti models for Invest 94L

Who is likely to be impacted?

No direct threat to Florida from Tropical Storm Sean or Invest 94L are expected over at least the next five to seven days, according to the Florida Division of Emergency Management.

Forecasters urge all residents to continue monitoring the tropics and to always be prepared.

Weather watches and warnings issued in Florida

When is the Atlantic hurricane season?

The Atlantic hurricane season runs from June 1 through Nov. 30.

When is the peak of hurricane season?

Hurricane season's ultimate peak is Sept. 10 but the season goes through Nov. 30. Credit: NOAA
Hurricane season's ultimate peak is Sept. 10 but the season goes through Nov. 30. Credit: NOAA

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

Tropical forecast over the next seven days

Excessive rainfall forecast

What's out there?

Systems currently being monitored by the National Hurricane Center.

Noaa

Embedded content: https://www.nhc.noaa.gov/xgtwo/two_atl_0d0.png?052051

What's next?

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This article originally appeared on Treasure Coast Newspapers: NHC updates for Tropical Depression Sean, Invest 94L