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Tropical Storm Barry could dump 20 inches of rain on New Orleans, nearing levees’ limits

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Tropical Storm Barry could dump 20 inches of rain on New Orleans, nearing levees’ limits

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NEW ORLEANS – Tropical Storm Barry was on track to hit the Louisiana coast early Saturday as a possible hurricane, but the primary danger is not from high wind but heavy rain and a dangerous storm surge threatening low-lying coastal areas and the levees of New Orleans.

At 7 a.m. CDT,  Barry was about 95 miles southwest of the mouth of the Mississippi River, crawling through of the Gulf of Mexico at 5 mph. It was expected to shift to a northwesterly track later Friday before heading north and going ashore over the central or southeastern coast of Louisiana Friday night or early Saturday, according to the National Weather Service.

Barry was packing sustained winds near 50 mph, still well short of the hurricane designation of 74 mph. Forecasters said it was still possible Barry would remain a tropical storm when it went ashore.

Authorities said the timing of Barry’s arrival is critical. “The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline,” the NWS said.

If it hits at the time of high tide, the weather service said, water could swell 3 to 6 feet above ground from the Atchafalaya River to Shell Beach, 2 to 4 feet from Shell Beach to the Mississippi-Alabama border, and 2 to 4 feet at Lake Pontchartrain.

Heavy rain packs the biggest danger over the region through the weekend. Forecasters said up to 20 inches is expected over southeast Louisiana, including New Orleans, Baton Rouge and Alexandria, and in southwest Mississippi, with as much as 25 inches in some isolated areas.

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The weather service said the rains “are expected to lead to dangerous, life-threatening flooding over portions of the central Gulf Coast into the Lower Mississippi Valley.” 

Around New Orleans, the heavy rain and a storm surge could mean up to 3 feet of water in an already swollen Mississippi River, pushing it to 19 feet above sea level, close to the levee system’s 20-foot limit in some places.

 A spokesman for the Army Corps of Engineers, however, expressed confidence that the levee system could handle the rapid rise, even if water should spill over in some spots. 

“We’re confident with the integrity – the levees are extremely robust and designed to handle a lot of pressure,” Corps spokesman Ricky Boyett said.

Gov. John Bel Edwards, warning of a “significant weather event,” said he was prepared to activate up to 3,000 personnel to deal with the storm.

President Donald Trump approved an emergency declaration for the state late Thursday to provide disaster relief. 

For residents of New Orleans, the message from authorities was to hunker down. Mayor Latoya Cantrell noted that the city only orders evacuations for Category 3 hurricane or stronger. “Therefore, sheltering in place is our strategy,” the mayor said.

In New Orleans, an early line of thunderstorms dumped as much as 7 inches of rain within a three-hour period Wednesday morning, leaving up to 4 feet of water in some streets.

City officials said the pumping system that drains streets was at full capacity. The immense amount of rain in three hours would overwhelm any system, said Sewerage and Water Board Director Ghassan Korban.

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The mayor of New Orleans says the city’s water pumps are “working at optimal capacity” as Tropical Storm Barry moves toward the state’s Gulf coast. (July 11)
AP, AP

Many residents in the Big Easy used the lull before the storm to stock up on supplies Thursday. 

At the Tchoupitoulas Walmart, which sits across the street from the Mississippi River and a concrete flood wall, residents emptied shelves of bottled water, ramen noodles and produce. 

Ruby Sterling said she lives in more elevated part of the city but admitted she was feeling “a bit panicky.”

“I don’t know if the city can hold up,” Sterling said. “But I’m hopeful.”

A few aisles up, Asia Daniels and her husband pulled case after case of bottled water into their cart. Ordinarily, floodwater only rises to the first step of their house in uptown New Orleans. Wednesday’s storms brought the water to the second. 

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Leigh Guidry reports for the Lafayette Daily Advertiser

Follow USA TODAY Network’s on-the-ground coverage of Barry on Twitter.

Read or Share this story: https://www.usatoday.com/story/news/nation/2019/07/12/tropical-storm-barry-threatens-heavy-rain-storm-surge-gulf-coast/1712506001/

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