Harvey again makes landfall, this time as a tropical storm, in western Louisiana.

As Harvey moved east on Aug. 29, a fire station on Keith Road in Lumberton, Tex. became a staging ground for rescue boats going house-to-house checking in on residents. (Jorge Ribas,Lee Powell/The Washington Post)

HOUSTON — The storm once known as Hurricane Harvey made its second landfall Wednesday, dumping record rains and spurring additional flooding in small Texas cities that lie east of now-devastated Houston.

Harvey, which had swung out into the Gulf of Mexico again, came ashore at dawn near the Texas-Louisiana border. Its rain bands preceded it, pounding Texas towns including Orange, Port Arthur and Beaumont with more than two feet of rain.

City officials said much of Port Arthur — a city of 55,000 — was under water. A shelter for flood victims flooded. One official estimated that water had entered one-third of the city’s buildings.

“We need boats. We need large trucks, and we need generators,” said Tiffany Hamilton, a former city councilwoman in Port Arthur who was helping coordinate relief efforts in a city that is also without electricity. “The entire city has been flooded.”

About 80 miles to the west, the Houston area was just beginning to recover from the biggest rainstorm in the recorded history of the continental United States.

Nearly 35,000 people were in shelters. Thousands of homes were still submerged.

Houston Police Chief Art Acevedo said Wednesday that 20 people remained missing in the city. At one point, that figure had gone as high as 47, but Acevedo said 27 people have been found alive and removed from the list.

At least 37 people were dead, and that number was climbing as water receded, revealing the storm’s awful toll.

Harris County authorities finally located a van, containing six members of the same family, that had been washed off the road days earlier. All six were dead.

A few miles away, authorities discovered the bodies of two friends who had gone out in a boat Monday, trying to rescue neighbors. They lost control in the current, drifted toward the sparks of a downed power line. They jumped in.

Three other men, including two journalists from a British newspaper, suffered electrical burns but survived by clinging to a tree above the water.

By Wednesday afternoon, the remnants of Harvey had moved into Louisiana, and by the evening had weaken to a tropical depression.

Louisiana officials, who had worried that Harvey might devastate their state as well, said the threat of flooding seemed to be lessening.

“Somewhere between being complacent and being panicked is the right place” to be, said Gov. John Bel Edwards (D). “That’s where we’re going to ask the people of Louisiana to settle.”

More than 50 inches of rain fell onto Houston over four days, turning the country’s fourth-largest city into a sea of muddy brown water, boats skimming along what had been neighborhood streets in search of survivors.

At the height of the flooding, between 25 and 30 percent of Harris County — home to 4.5 million people in Houston and its near suburbs — was flooded as of Tuesday afternoon, according to Jeff Lindner, a meteorologist with the county flood control district. That is an area as large as New York City and Chicago combined.

On Wednesday, Texas Gov. Greg Abbott (R) said more than 210,000 people in his state had applied for assistance from FEMA.

The number of people who have registered for federal assistance is expected to go up, William “Brock” Long, the FEMA administrator, said during a news briefing. It will take “many, many years” before the full scope of Harvey’s impact is clear, Long said.

“We expect a many-year recovery in Texas, and the federal government is in this for the long haul,” Elaine Duke, the acting Homeland Security secretary, said at the same briefing Wednesday.

President Trump has pledged swift federal aid in response to Harvey’s devastation. Abbott said that given the sheer number of people and geographic area impacted, he expects the federal government’s aid package “should be far in excess” of the roughly $120 billion in funds allotted for Gulf Coast recovery after Katrina.

Trump could request a package of emergency funding to deal with the damage caused by Harvey as soon as next week, a senior administration official said, reshuffling the political agenda as the White House scrambles to deal with devastation left by the storm.

The funding package is expected to only be a partial down payment and serve in part to backstop depleted reserves that the Federal Emergency Management Agency had on hand to respond to disasters.

No final decision on the funding request has been made and it could fluctuate based on conversations with lawmakers. Rep. Sheila Jackson Lee (D-Tex.) said the aid package request could be as much as $200 billion.

A timelapse video captures the flooding in Houston since Harvey struck on Aug. 25. (Exavier Blanchard)

Tens of thousands of Houston-area residents were living in shelters as they waited out the floodwaters. After the George R. Brown Convention Center took on nearly 10,000 evacuees, a county official asked to use the NRG Center south of downtown.

“They called up our CEO yesterday, and said: ‘Hey, we need you to do the shelter,’” said Frederick Goodall, director marketing for the nonprofit Baker-Ripley, which is overseeing the new center.

That call was Tuesday morning. By the same time Wednesday, the NRG Center was lined with cots and thousands of volunteers. By the afternoon, 900 people had been bussed in from other shelters, and nearly twice that many were expected to arrive by the end of day. Six days after the storm made landfall, residents were still unsure how long they would be out of their homes or what they would find when the waters recede.

Evacuees and volunteers at Purple Heart Recreational Center’s ad hoc shelter described the conditions Aug. 29 in Lake Charles, La., where Tropical Storm Harvey continues its downpour. (Tom Moore,Monica Akhtar/The Washington Post)

Some of Houston’s bayous began to retreat inside their banks — although Buffalo Bayou, Houston’s main river, was still rising in some sections because of the release of water from upstream reservoirs.

“The watersheds are falling, and while most of them remain well over their levels, and some remain at record levels, the water levels are going down,” said Jeff Linder, of the Harris County Flood Control District. But he cautioned that some homes already under water may “degrade.”

Across Texas, the storm shut down 11 oil refineries and curtailed production at nine others, while causing damage leading to at least 45 releases of harmful chemicals. In Crosby, Tex., a chemical plant was in critical condition after flooding disabled its refrigeration system and two backup power generators, raising the likelihood that the volatile chemicals usually kept at cool temperatures on the site would warm up and catch fire or explode.

Arkema, a French-based maker of organic peroxides used in plastics, pharmaceuticals and construction materials, evacuated all the personnel from the plant. Harris County police were scrambling to keep people at a distance; local media said the evacuation zone had a 1.5 mile radius.

“We have lost critical refrigeration of the materials on site that could now explode and cause a subsequent intense fire,” Rowe said. “The high water and lack of power leave us with no way to prevent it.”

Elsewhere, it was the first day of the rest of Houston’s history, where millions of lives had been reshaped and burdened by the flood’s destruction.

Cleanup doesn’t begin to describe what’s next.

Power was out. Debris littered the city. When a house caught fire in West Houston, firefighters couldn’t get water pressure to fill their hoses. Instead, they turned to the water around them and used a jet boat engine: They pointed the back of the boat toward the house, fired up the engine, and sprayed a massive water stream toward the blaze.

On highways that allowed for some traffic, large pickup trucks — some outfitted with monster truck-style tires — hauling boats made up the majority of those who dared to travel. Grocery stores, doughnut shops and Mexican-food restaurants reopened.

For those lucky enough not to be in a shelter, it was a day to take stock of what Harvey left behind.

“I feel like I’m dreaming,” said Julie Steptoe, who ventured Wednesday morning to an intersection in Kingwood, north of Houston. Never taking her eyes off the water that engulfed the area, she continued: “I don’t know what to think. I’m hoping it turns out okay for everyone.”

In Katy, people offered gifts to the “Cajun Navy” volunteers from Louisiana, who had been conducting rescues in the area west of the city. What gifts does one gift after a flood? Chewing tobacco. Bottles of water. Packs of dry socks.

Neighbors then turned to start the enormous task of removing water and waterlogged debris.

At the Ehlert house, China chests filled with Christmas village ornaments, computers, sweaters and silverware were stacked in the center of the living room. A grandfather clock was flooded. Floral wallpaper was peeling. Neighbors were lugging out trash and soggy drywall and insulation.

“Our neighborhood army is here — pizza and tools,” said Don Ehlert, 69, who lives in the house with his wife and two grandchildren who are 5 and 12. After a call for help on a social media app, 50 people had shown up. Ehlert had never met most of them.

“This is what America is all about,” said Don’s wife, Cheri.

Nearby, Linda Oliver watched from a waterlogged golf course as helicopters continued to pluck up her neighbors. She’d left her home and car behind when she was rescued. They were probably underwater.

“I’m certainly just happy to be safe,” she said.

But she was thinking about what came after “safe.”

“I don’t think I ever will recover financially from this,” Oliver said.

Further east, in Port Arthur and Beaumont, the rain was so bad that it sounded like hail on windows. Hamilton, the former councilwoman in Port Arthur, said that in the rain, emergency lines were overwhelmed, and friends called friends for help.

Hamilton said one of her friends got a call about 2 a.m. from an elderly woman.

“She and her husband were both in the water and he was in a wheelchair, and she said she was struggling to hold his head above water,” said Hamilton, who was finally able to relay the information to emergency workers about 10 a.m. Hamilton does not know if anyone was ever able to reach the couple.

In nearby Orange, the water began rising at 3 a.m. Wednesday, covering first the streets, then the small residential lawns. And by morning it was rising with speed, pushing into homes and submerging to the rooflines of cars, trapping hundreds of people in their homes.

“It was unbelievable,” said Robin Clark, who was ferried, along with her wheelchair-bound mom and three dogs, out of her home on a volunteer’s john boat.

Dozens of rescued residents stood in a pelting rain outside a Market Basket supermarket.

They were saved. But being saved was just the start.

“We don’t know what’s going to happen,” said Keeleigh Amodeo, 15, who was waiting with her sister and mother.

Meanwhile, North of Beaumont, Tyler County Judge Jacques Blanchette wrote a blunt warning to constituents after the U.S. Army Corps of Engineers opened floodgates on the swollen Neches River. Blanchette warned residents living near the river, south of B.A. Steinhagen Lake, to evacuate.

“Anyone who chooses to not heed this directive cannont expect to be rescued and should write their social security numbers in permanent marker on their arm so their bodies can be identified. The loss of life and property is certain,” Blanchette wrote on the county’s Facebook page.

“GET OUT OR DIE!”

Selk reported from Houston and Fahrenthold reported from Washington. Dalton Bennett, Tim Craig and Kevin Sullivan in Houston; Emily Wax in Katy, Tex.; Alex Horton in Crosby, Tex.; Ashley Cusick in New Orleans; Leslie Fain in Lake Charles, La.; and Mark Berman, Steven Mufson, Ed O’Keefe, Damian Paletta, Mike DeBonis, Wesley Lowery, Katie Zezima, Dave Clarke and Jason Samenow in Washington contributed to this report.

Hundreds of families found shelter at Wedgewood Elementary School in Friendswood, Tex., after Tropical Storm Harvey’s floodwaters forced them out of their homes. (Zoeann Murphy,Thomas Johnson/The Washington Post)