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New tropical depression may soon form offshore of U.S. Southeast Coast

AccuWeather logo AccuWeather 8/12/2017 Kristina Pydynowski

Southeastern U.S. beaches may face an increased risk for rip currents because of 99L. © NICHOLAS KAMM, AFP, Getty Images Southeastern U.S. beaches may face an increased risk for rip currents because of 99L. The newest tropical depression or storm will attempt to take shape offshore of the southeastern United States in the coming day or two.

A depression may form as a tropical low, dubbed 99L, churns northeast of the Bahamas this weekend, and then a few hundred miles off the southeastern U.S. coast on Monday.

When clusters of thunderstorms have a chance to become a tropical depression or storm, they are assigned a number between 90 and 99. The “L” designation refers to a system under investigation in the Atlantic.

Ninety-nine L has become better organized since Friday, heightening the concern for a depression or storm to develop. The next tropical storm in the Atlantic will acquire the name “Gert.”

Even if strengthening takes place, chances are low for 99L to rapidly intensify and become a hurricane.

The most likely future track for 99L keeps it over the open waters of the Atlantic, in between the southeastern U.S. and Bermuda.

Even if 99L attempts to graze the Outer Banks of North Carolina with rain later on Monday, it is expected to get swept off to the northeast and absorbed by a non-tropical system on Tuesday.

The favored offshore track would limit the hazards of 99L to cruise and shipping interests, as well as beachgoers.

Rough seas will get churned up over the southwestern Atlantic Ocean. Swimmers at the southeastern U.S. beaches, the eastern coast of the Bahamas and Bermuda may face an increased risk for rip currents.

<p>Forecasters at the National Oceanic and Atmospheric Administration predict 2017 will be a worse than average hurricane season, with between 11 and 17 named storms, including between two and four major hurricanes.</p><p>The frequency and intensity of hurricanes during the season -- which stretches for nearly half the year, from the beginning of June through the end of November -- can be difficult to predict. It only takes one storm hitting in the right place to damage hundreds of thousands of homes and cause tens of billions of dollars in damage.</p><p>While a single storm will never hit every vulnerable city along the Atlantic and Gulf coastlines, nearly 6.9 million homes, with a total reconstruction cost value of over $1.5 trillion, are at risk of damage from flooding caused by hurricanes. 24/7 Wall St. reviewed the number of homes at risk and the estimated construction costs for U.S. metro areas along the Atlantic and Gulf coasts from data analytics company CoreLogic. The 15 cities vulnerable to the greatest damage are listed in order of the number of homes at risk of destruction from flooding due to rainfall and storm surge.</p> Cities Where Hurricanes Would Cause the Most Damage

Slideshow by 24/7 Wall St.

Regardless of 99L remaining offshore, the non-tropical system set to whisk it away from the U.S. will first enhance the risk for flash flooding in the southeastern U.S. into early next week.

Seas will also be churned up across most of the East Coast this weekend.

“Elsewhere in the Atlantic Ocean, the system that attempted to brew just east of Florida has lost its chance to develop,” AccuWeather Senior Meteorologist Alex Sosnowski said.

A new tropical wave that emerged off the western coast of Africa will be the next feature to be monitored by AccuWeather meteorologists.

If it can overcome the dry air that has plagued most systems so far this season, it may have an opportunity to develop as it crosses the open waters of the eastern and central Atlantic next week.

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