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Claudette is likely to form and make landfall in the US this week, delivering close to a foot of rainfall

By Hannah Gard and Monica Garrett, CNN

The US will likely be hit by the first tropical system of the season by the end of this week, bringing nearly a foot of rain to parts of an already drenched South.

The system is currently stationed over over the Bay of Campeche in the Gulf of Mexico and southern Mexico as a collection of disorganized showers and thunderstorms.

The National Hurricane Center (NHC) puts the chance of tropical development within the next 48 hours at 70%, and a 90% chance within the next five days in the Gulf.

If the disturbance strengthens according to forecasts, it will be named Claudette — the third named storm of the 2021 season.

Uncertainty is high regarding the track of the storm since it has not formed yet, but current forecasts have the system reaching the northern Gulf Coast this weekend. Landfall of the system is possible from the Texas coast to Florida.

“A tropical depression is likely to form by late Thursday or on Friday when the low moves across the western Gulf of Mexico,” said the NHC in its discussion.

Current model guidance is indicating that the storm will track toward the western Gulf Coast, near Texas and Louisiana. There is considerable uncertainty in the tracks, but if this scenario play out, areas vulnerable to flooding could see the greatest impacts of the system.

Flooding rainfall is the greatest concern, warns NWS

The central Gulf Coast and the Florida Panhandle are expecting significant rain totals as early season storms tend to be weak, with rainfall far removed from the center of the storm, according the National Weather Service (NWS) in Mobile.

Louisiana, Mississippi, Alabama, Georgia and the Florida Panhandle are expecting heavy rain.

“We’ve had a good amount of rain just over the last months,” said NWS Lake Charles, Louisiana, meteorologist Chanelle Stigger. “We had heavy rain, and we saw over a foot of rain just in the Lake Charles area itself. The soils have been pretty saturated.”

Stigger said that rainfall “would be our greatest concern.”

This storm forming in the Gulf brings back haunting memories to people in Louisiana.

The 2020 hurricane season was an active one, with four named storms making landfall on the coast of Louisiana alone. Flooding was a massive issue for the coastal region and has already proven to be troublesome over the past few months.

Lake Charles and other parts of southern Louisiana that were battered by two hurricanes in the 2020 season saw up to a foot of rainfall in one rain event last month. May 17 was recorded as the third wettest day in Lake Charles history.

All of southern Louisiana saw tremendous amounts of rainfall in May, with residents wishing the rain would end.

Rainfall from this weekend’s system could range from 7 to 10 inches from New Orleans to Mobile, Alabama.

“These amounts could cause widespread flooding as well as rises on area rivers to flood stage or higher,” NWS New Orleans warns.

Fortunately, current models are showing the system move through the region at around 10 to 15 mph. “That bodes well, generally speaking, to keep this from being an event like Harvey,” said NWS New Orleans.

Hurricane Harvey struck the Texas coast on August 25, 2017, as a major category four hurricane. The storm stalled out over the coast for five days, dumping 51 inches of rain in parts of Texas.

Flooding will only be one of the main worries as the weekend approaches.

“Surf heights quickly increase through the day on Friday with 6+ feet possible by Friday afternoon,” NWS Mobile stated in their forecast discussion.

Rip tides caused by the southerly winds and swells from the storm will likely impact the coastal areas. Strong wind concerns could be possible and will become more evident as the disturbance enters warm water in the Gulf.

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