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South Louisiana storm surge, tropical storm warnings issued for Tropical Storm Beta

Alyssa Berry
Lafayette Daily Advertiser
Tropical Storm Beta began moving slowly Sunday west-northwest toward the Texas coast.

The National Hurricane Center issued a storm surge warning for Cameron Parish and extended a tropical storm warning east to Vermilion, Iberia and St. Mary parishes as Tropical Storm Beta moved slowly toward the northwest Sunday. 

Beta no longer is expected to intensify beyond its current 60 mph strength after the storm became less organized as it encountered wind shear and drier air, the hurricane center said.

But the storm threatens to bring surge and flooding rains to southwest Louisiana, particularly in Cameron Parish where residents are recovering from Hurricane Laura's devastating landfall last month. The parish remains under a mandatory evacuation order from Laura as officials continue recovery there.

Surge, flooding, wind:See Tropical Storm Beta's impact in Louisiana parish by parish

NHC updates:Beta getting closer to central Texas coast, bringing tropical-storm-force winds

In New Orleans, a flash flood watch was in effect through Wednesday as officials ordered residents to move their vehicles to neutral ground Sunday.

Gov. John Bel Edwards on Sunday urged Louisianans to take the storm's threat of surge, heavy rains and winds seriously.

"We encourage everyone to stay informed about the changing conditions and forecast. Follow the directions of your local officials to help you make safe decisions for you, your family and your business," he said. 

Beta was moving about 6 mph west-northwest toward the central Texas coast, about 120 miles southeast of Galveston, Texas, according to the latest advisory. The storm could move ashore on the Texas coast by Monday night.

More:Tropical Storm Beta: Here's the impact Cameron Parish can expect weeks after Hurricane Laura

Once inland, Beta is expected to shift north and east, bringing the weakening storm into Louisiana.

As Beta has lost organization and structure, its asymmetric shape puts the tropical storm's strongest winds located in the deep convection farther to the northeast, which will bring surge, heavy winds and flooding rains into southwest Louisiana.

Along the Louisiana coastal parishes of Cameron, Vermilion, Iberia, St. Martin and St. Mary, Beta is expected to bring between 1 and 4 feet of storm surge and rainfall amounts between 6 and 10 inches through Thursday. Winds are expected between 30 mph and 40 mph, with gusts up to 50 mph, according to the National Weather Service in Lake Charles.

Inland Acadiana parishes like Lafayette, St. Landry, Evangeline and Acadia can expect to see winds between 20 mph and 30 mph, with gusts up to 40 mph, the weather service said. Beta is expected to bring 4 to 6 inches of rainfall to those areas, with similar conditions also expected in Jefferson Davis, Beauregard, Vernon, Rapides, Avoyelles and Allen parishes.

In Calcasieu Parish, Beta is expected to bring about a foot of storm surge, with winds ranging between 20 mph and 30 mph, and gusts up to 40 mph, according to the weather service. Rainfall amounts could reach up to 10 inches in the Lake Charles area and south Calcasieu Parish.

Watches and warnings

Storm Surge Warning:

  • Port Aransas, Texas to Rockefeller Wildlife Refuge, Louisiana, including Copano Bay, Aransas Bay, San Antonio Bay, Matagorda Bay, Galveston Bay, Sabine Lake, and Lake Calcasieu

Tropical Storm Warning:

  • Port Aransas Texas to Morgan City Louisiana

Tropical Storm Watch:

  • Baffin Bay to Port Aransas Texas

Tropical Storm Beta path projections