Atlantic invests 90L, 99L lurking off US coastlines among 4 tropical disturbances monitored for development
A tropical disturbance off the Texas and Louisiana coasts in the Gulf of Mexico is the latest to get an invest designation as it dumps heavy rain along the Gulf Coast.
Tracking the tropics: Invests 90L, 99L still swirling near the US
Forecasters with the National Hurricane Center (NHC) are keeping an eye on four areas swirling in the Atlantic Basin, including Invest 99L off the U.S. East Coast and Invest 90L off the Gulf Coast.
UPDATE as of 2 p.m. ET on Sept. 6, 2024: Forecasters are watching an area in the southern Gulf of Mexico that they say could form into a tropical depression. Click here to see the latest forecast for the Atlantic basin.
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MIAMI – Forecasters with the National Hurricane Center (NHC) are keeping an eye on four areas swirling in the Atlantic Basin, including a newly designated Invest 99L off the U.S. East Coast and Invest 90L off the Gulf Coast.
An "invest" is simply a naming convention used by the NHC in Miami, the Central Pacific Hurricane Center (CPHC) in Honolulu, Hawaii, and the U.S. Joint Typhoon Warning Center (JTWC) in Pearl Harbor, Hawaii, to identify areas they are investigating for possible development into a tropical depression or tropical storm within the next seven days.
The NHC said Invest 99L is located a few hundred miles east of North Carolina and is producing showers and thunderstorms to the northeast and east of the system's center.
Invest 99L could acquire some subtropical characteristics over the next few days while it moves to the north-northeast. On Friday, the NHC said showers and thunderstorms associated with Invest 99L are becoming better organized and producing gale-force winds.
Invest 99L is expected to remain off the Northeast coast, and once the system moves over cooler waters by late Saturday, further subtropical development is not expected.
The NHC is giving Invest 99L a low chance of developing.
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Invest 90L near Texas coast blasts Gulf Coast with wet weather
A disturbance in the Gulf of Mexico off the Texas and Louisiana coasts, now dubbed Invest 90L by the NHC, is being monitored for possible tropical development over the next few days.
This area of disturbed weather has been blasting the Gulf Coast with heavy rain over the past several days, but the NHC dropped development odds earlier this week. However, in its update Thursday morning, the NHC once again said it would watch the system and later in the day gave it the invest designation.
The NHC said upper-level winds are expected to become less conducive for development by Friday and Saturday as a front approaches ther area.
"Although tropical cyclone development is unlikely, heavy rainfall is expected to continue across portions of the northern Gulf Coast during the next day or so," the NHC said.
The NHC is giving the system a low chance of developing.
Caribbean disturbance could develop once it enters Gulf of Mexico
The NHC said disorganized showers and thunderstorms over the northwestern Caribbean Sea are associated with a tropical wave.
"Development is not expected before the system reaches Belize and the Yucatan Peninsula later today. Some slow development is possible later this weekend after the system emerges over the southwestern Gulf of Mexico," the NHC said in its latest outlook on Friday.
The NHC is giving the system a low chance of developing.
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Tropical disturbance in eastern Atlantic could slowly develop
A tropical disturbance over the eastern tropical Atlantic is producing a broad area of disorganized showers and thunderstorms. The NHC said development, if any, should be slow to occur during the early part of next week while the disturbance moves slowly northwestward or north over the eastern tropical Atlantic.
The disturbance has a low chance of developing over the next week.
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