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Nana Heads Towards Central America While Rest of Atlantic Stays Active

The tropics are not slowing down as we begin September with two active tropical cyclones in the Atlantic, both of which formed on Monday.

Hurricane watches are in place for parts of Central America ahead of Tropical Storm Nana, while Tropical Storm Omar will continue moving out to sea.


What You Need To Know

  • Tropical Storm Omar formed off the southeast U.S. coast on Tuesday
  • Most of Omar’s impacts will remain out in the open Atlantic
  • Tropical Storm Nana is moving west towards Honduras and Belize
  • Two tropical waves near Africa have a chance of developing further

Tropical Storm Nana formed in the Caribbean Sea on Tuesday afternoon and is continuing on a west track.

Tropical storms warnings and watches are in effect for the coast of Honduras, Belize, and the southern coast of Mexico.

Hurricane watches run up and down the coast of Belize.

Nana is expected to strengthen as it inches closer to land due to low wind shear and warmer waters, and it could potentially reach hurricane strength before making landfall in Central America.

Heavy rain, strong winds, and dangerous storm surge could be a possiblity for the coastal cities.

Meanwhile, off the coast of North Carolina, Tropical Storm Omar continues to move away from the U.S. as it tracks east-northeast at 14 mph. 

Omar is more than 100 miles east of Cape Hatteras, North Carolina. No impacts to the U.S. are expected.

That said, stronger wind shear and colder waters will help break Omar down, causing it to dissipate over the next few days.

Fast Start To Hurricane Season Continues

Nana and Omar’s dual developments on Monday mean that the Atlantic is already up to 15 named storms so far this season – far more than the 12 named storms that develop over the course of an average full season.

Nana and Omar also became the earliest N and O-named storms on record in the basin, and the 2020 Atlantic season continues to outpace the 2005 season in terms of record-setting early development. 

Another tropical wave is still over far western Africa and is forecast to move into the Atlantic. For now, chances are medium for further development within the next five days.

A second tropical wave is centered between Africa and the eastern Caribbean which has a low chance of development over the next 5 days.

We’ll be watching both.

The average peak of the hurricane season is approaching and tropical systems can develop just about anywhere in the Atlantic basin this time of year.

In the first ten days of September, they have formed anywhere from the Gulf of Mexico to off the coast of Africa and everywhere in between. This is also the time of year when some of the strongest hurricanes happen.

Tropical Formation Locations and Tracks

Location of where named tropical systems have formed (red dots) and their tracks (gray lines) in the first 10 days of September. (NOAA/NWS)

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