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Dangers from Harvey loom for Texas as Houston floodwaters recede -- live updates

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HOUSTON -- Major dangers for the U.S. Gulf Coast area loomed Thursday with the threat of major flooding further east near the Texas-Louisiana line and a fire at a Texas chemical plant as Harvey's floodwaters began receding in the Houston area after five days of torrential rain.

Beaumont and Port Arthur, Texas, struggled with rising water as the area was pounded with what remained of the weakening storm, while Houston's fire department said it would begin a block-by-block search of thousands of flooded homes. Assistant Fire Chief Richard Mann said the searches were to ensure "no people were left behind."

The confirmed death toll climbed to at least 29, including six family members -- four of them children -- whose bodies were pulled Wednesday from a van that had been swept off a Houston bridge into a bayou.

"Unfortunately, it seems that our worst thoughts are being realized," Harris County Sheriff Ed Gonzalez said after the van that disappeared over the weekend was found in 10 feet of muddy water.

Follow along below for live updates on the storm. All times are Eastern unless otherwise noted. 

12:35 p.m.: Dramatic footage of helicopter rescues in Port Arthur

Dramatic helicopter rescue in Port Arthur, Texas 10:07

Helicopter crews in Port Arthur, Texas, rescued residents trapped by floodwaters, hovering over homes and repeatedly lifting people into the air.

Footage showed crews making multiple rescues in a residential area where water appeared to still be several feet deep. Port Arthur was one of the towns hardest hit by Harvey.

12:29 p.m.: EPA: No "concentrations of concern" of toxic chemicals at Arkema plant

The Environmental Protection Agency (EPA) says it is working with local and federal authorities to monitor the situation in Crosby, Texas, where a trailer at an Arkema chemical plant exploded and caught fire.

"EPA has emergency response personnel on the scene and the Agency is currently reviewing data received from an aircraft that surveyed the scene early this morning," EPA Administrator Scott Pruitt said in a statement. "This information indicates that there are no concentrations of concern for toxic materials reported at this time."

The agency says it has deployed aircraft to the scene to collect chemical information about the smoke cloud produced by the fire.

12:00 p.m.: Gas prices jump after Harvey

Gasoline prices in Texas and across the country have increased by at least 10 cents since Harvey came ashore and caused record flooding in places. 

AAA Texas on Thursday reported the average price at the pump statewide was $2.26 per gallon. That's 12 cents higher than a week ago, before Harvey made landfall, and 4 cents higher than on Wednesday. 

The association survey says U.S. gasoline prices Thursday averaged $2.45 per gallon, which is 10 cents higher than a week ago and 5 cents more than on Wednesday.

11:56 a.m.: Irma reaches hurricane-strength in the Atlantic

Far out over the Atlantic, Hurricane Irma formed as a Category 2 storm, the U.S. National Hurricane Center said. It posed no immediate threat to land.

Irma's center was about 650 miles west of the Cabo Verde Islands off the west coast of Africa Thursday morning. Maximum sustained winds were near 100 mph. It was heading west-northwest at 10 mph, and no coastal watches or warnings were in effect.

The center said Irma was forecast to become a major storm by Thursday night.

11:06 a.m.: Arkema executive talks to CBS News about fire at chemical plant

Arkema executive on fire at chemical plant 03:17

Following a press conference on the situation at an Arkema Inc. chemical plant that caught fire in Crosby, Texas, early Thursday, executive Richard Rennard spoke to CBS News correspondent David Begnaud about the risk at the plant.

"The concern is that when these things degrade, they generate heat. When they generate heat, they can burn. When they burn, they burn aggressively. You can have an explosion," Rennard said. "We wanted to remove people from any potential hazard or risk for a potential explosion."

Rennard said he was confident the 1.5-mile evacuation zone around the plant was large enough to keep residents safe. He said the company was monitoring the remaining eight containers at the plant but couldn't say for sure whether Arkema would be able to anticipate future explosions.

"We want to make sure that we just have the right information in the hands of the citizens of the community," Rennard said.

10:01 a.m.: Officials provide update on fire at Arkema chemical plant

A fire continues to burn at a chemical plant in Crosby, Texas, after a reaction in a trailer storing unrefrigerated chemicals, officials said at a press conference Thursday morning.

Bob Royall, assistant chief of emergency operations for the Harris County Fire Marshal's Office, said officials were taking a "defensive posture" toward the situation at the Arkema Inc. plant but downplayed the severity of the fire.

A trailer burns at the Arkema chemical plant in Crosby, Texas. CBS News

"These are small container ruptures that may have a sound or something of that nature. These are not massive explosions," Royall said. 

Royall said officials anticipated the fires and were maintaining a 1.5-mile perimeter around the plant.

Arkema executive Richard Rennard said refrigerated containers were used to store organic peroxide after the flooding caused the plant's regular power and backup generators to fail. But those refrigerated containers also failed, causing the chemicals to degrade and eventually burn in one of the containers. 

He said the company anticipates that the eight remaining containers "where products are starting to degrade will produce more explosions."

"We encourage anyone who may be exposed to smoke coming from this fire to call their doctor or seek medical advice," Rennard said.

Harris County Sheriff Ed Gonzalez said one deputy inhaled a "non-toxic irritant" and received treatment.

8:17 a.m.: Police call plant incident a "series of pops"

Police said an incident at a Houston-area chemical plant early Thursday was not an explosion but instead a "series of pops."

The incident caused a fire to break out at the Arkema plant in Crosby, Harris County police said

Arkema Inc. earlier said in a statement on its website that the Harris County Emergency Operations Center reported two explosions and black smoke coming from the plant at about 2 a.m.

7:50 a.m.: Major gasoline pipeline to be shut down

Colonial Pipeline says it plans to shut down a key line that supplies gasoline to the South due to storm-related refinery shutdowns and Harvey's effect on its facilities west of Lake Charles, Louisiana. The Georgia-based company said in a statement that it expects to shut off the line Thursday. The company had already closed down another line that transports primarily diesel and aviation fuels.

The pipeline provides nearly 40 percent of the South's gasoline.

In September 2016, a leak and gas spill in Alabama that closed the Colonial Pipeline led to days of empty gas station pumps and higher prices in Alabama, Georgia, Tennessee and the Carolinas.

The company didn't say how long it expects the closure to last, saying it will know more when workers can evaluate its facilities. 

7:36 a.m.: Hospital treats nearly two dozen after explosions

A Texas hospital said nearly two dozen people were being treated after two explosions at a flooded chemical plant in Crosby.

Laurie Terry of Houston Methodist San Jacinto in Baytown told CBS News that 21 emergency responders and police officers were displaying symptoms of respiratory distress.

Terry said the group wasn't expected to suffer long-term effects and would likely be released later Thursday.

5:30 a.m.: Chemical plant explosions, smoke reported

Two explosions have been reported at the Arkema chemical plant in Crosby, 25 miles northeast of Houston, CBS Houston affiliate KHOU-TV reported early Thursday. Arkema officials had previously said they believed that sometime within the next several days, chemicals at the plant would degrade, explode and catch fire due to Harvey flooding-related power outages and a resulting loss of needed refrigeration of the chemicals at the site. 

3:15 a.m.: JJ Watt aid fund leaping

When the NFL's Houston Texans star JJ Watt set up an online fundraiser to help the city in the aftermath of Hurricane Harvey, he hoped to raise $250,000. Now, just a few days later, it's raised $8.5 million and quickly on its way to $10 million.  Watt revealed the news Wednesday evening on Twitter, CBS Houston affiliate KHOU-TV notes.

3:00 a.m.: Threat from reservoir grows

Fort Bend County, immediately southwest of Houston, went from urging residents of some areas to evacuate to ordering them to early Thursday after the Army Corps of Engineers forecast record water levels in the Barker Reservoir and warned of imminent additional flooding. The reservoir began overflowing Tuesday.  

2:15 a.m.: Southeast Texas city loses water supply

Beaumont lost serviced from its main pump station due to rising levels of the Neches River caused by Tropical Storm Harvey, the city announced early Thursday.

The pump station draws from the river as its main source of water for Beaumont's water system.

The city has also lost its secondary water source, at the Loeb wells in Hardin County.

Officials said they'll have to wait until water levels recede before they can determine the extent of damage and make any needed repairs, adding there's no way to say how long that wil take.

12:45 a.m.: Death toll rises to 28

CBS News confirmed seven more fatalities in Texas due to Harvey, bringing the death toll to 28.

Wed., Aug. 30:

9:05 p.m.: Judge blocks parts of Texas' "sanctuary cities" law

A U.S. judge Wednesday stopped parts of a Texas law intended to help federal immigration enforcement by punishing so-called "sanctuary cities" two days before it was to take effect.

Chief U.S. District Judge Orlando Garcia in San Antonio's federal court found the Texas measure was unlikely to withstand constitutional scrutiny. The law, SB 4, had been cheered by President Trump's administration but decried by immigrants' rights groups who say it could force anyone who looks like they might be in the country illegally to "show papers."

In a 94-page ruling, Garcia wrote that there "is overwhelming evidence by local officials, including local law enforcement, that SB 4 will erode public trust and make many communities and neighborhoods less safe" and that "localities will suffer adverse economic consequences which, in turn, will harm the state of Texas."

8:15 p.m.: Harvey downgraded to tropical depression

Hurricane Harvey heads toward Memphis 02:28

National Hurricane Center (NHC) downgrades Harvey to a tropical depression, but says catastrophic flooding continues.

Harvey, which was previously a tropical storm for 102 hours since 2 p.m. Aug. 26, weakened Wednesday and is about 10 miles southwest of Alexandria, Louisiana, with maximum sustained winds of 35 mph, according to NHC.

"Catastrophic and life threatening flooding will continue in and around Houston, Beaumont/Port Arthur, eastward into southwest Louisiana for the rest of the week," the NHC said.

Harvey is expected to produce an additional 4 to 8 inches of rainfall along the Texas-Louisiana line.

7:25 p.m.: Houston officials hold evening press update

  • Houston curfew goes in effect Thursday beginning 12 a.m. to 5 a.m. Central Time
  • Officials received 5,000 calls for help Wednesday; 1,500 high water vehicles were dispatched to remove people out of homes or vehicles
  • Up to 40 people rescued Wednesday; nearly 4,500 rescued so far (by Houston police and fire department)
  • Houston Mayor Sylvester Turner says bills will be wiped clean for police Sgt. Steve Perez, 60, who died after he became trapped in his patrol car as he was driving to work
  • "This is a storm that does not discriminate simply based on geography," Mayor Turner said
  • "We have seen a transition from rescue calls to recovery operations," Fire Chief Richard Mann said
  • Mann said a "wide area search" will begin Thursday in areas hardest hit by Harvey which will be a one- to two-week process
  • Mann said since Harvey inundated the Houston area, the fire department received more than 15,000 calls for service

  • United Airlines will be sending help from LAX with five additional aircraft, according to Mario Diaz, regional director of Houston airport system
  • Diaz said Thursday will see the first set of international flights begin from Houston airports (to Beijing and Instanbul)
  • On Saturday midday: Southwest will resume and ramp up all of its flights from Hobby Airport (domestic and international)
  • On Sunday: expecting a full complement of international and domestic operations; 75 to 85 percent over the ensuing week
  • Diaz told passengers not to go to area airports unless you have a confirmed seat or received confirmation from the airline

6:55 p.m.: Louisiana governor offers aid to Texas

On board a Navy helicopter rescuing people stranded in East Texas 01:23

Wednesday afternoon brought the unusual sight of Louisiana's governor holding a news conference on Texas soil.

Louisiana Gov. John Bel Edwards visited a command post set up by Louisiana government agencies on the side of Interstate 10 in Orange.

Edwards said Louisiana wanted to send help, including Fish and Wildlife agents and the Louisiana National Guard because "it's the right thing to do."

School buses and transit buses were sent from Lake Charles to carry evacuees to two shelters the state is running there. Louisiana has also opened a shelter in Alexandria, the largest city in the central part of the state.

Edwards said he'd spoken to Texas Gov. Greg Abbott Wednesday about the effort. He said Louisiana would assist for "however long it takes," saying the state owes its western neighbor a debt for its aid in 2005.

Edwards says, "Twelve years and a day ago, it was Hurricane Katrina."

6:45 p.m.: Dramatic footage of a swift water rescue

The El Paso Customs and Border Patrol (CBP) Search, Trauma and Rescue (BORSTAR) agents and their law enforcement partners conducted a swift water rescue in Houston, Texas.

They released video which you can watch below. A woman is shown clinging to a utility pole and is heard saying, "I'm sorry."

6:30 p.m.: Expansion of disaster declaration sought

Louisiana Gov. Edwards asked for expansion of a federal emergency disaster declaration as Tropical Storm Harvey moves through the state.

President Trump already issued such a declaration for five southwestern parishes: Beauregard, Calcasieu, Cameron, Jefferson Davis and Vermilion.

In a letter to the Federal Emergency Management Agency on Wednesday, Edwards sought the addition of Allen, Acadia, Iberia, Natchitoches, Rapides, Sabine and Vernon.

The declaration authorizes the federal government to cover 75 percent of costs of certain emergency protective measures.

6:20 p.m.: Chemical plant releases updated statement

Officials from a chemical plant at risk of exploding after floodwaters caused by Harvey to knock out electricity to the facility in Crosby, Texas, released an updated statement.

"People are working around the clock under extremely challenging conditions, and the work thus far has been tremendous," Arkema Inc. president and CEO Rich Rowe wrote in a statement.

"Right now, we have an unprecedented 6 feet of water at the plant," the statement continued. "We have lost primary power and two sources of emergency backup power. As a result, we have lost critical refrigeration of the materials on site that could now explode and cause a subsequent intense fire. The high water and lack of power leave us with no way to prevent it. We have evacuated our personnel for their own safety."

"The federal, state and local authorities were contacted a few days ago, and we are working very closely with them to manage this matter. They have ordered the surrounding community to be evacuated, too."

6:10 p.m.: CBS News witnesses livestock rescue

CBS News producer Christina Ruffini shot video of a rescue of livestock in Crosby, Texas.

6 p.m.: Harvey may weaken to tropical depression

Forecasters predict a wobbling and weakening Harvey will be downgraded to a tropical depression late Wednesday or early Thursday and that the killer storm will completely dissipate within three to four days.

But with 40 mph winds as of Wednesday afternoon, Harvey still has lots of rain and potential damage to spread, this time further north.

The National Hurricane Center says that Harvey should drop 4 to 8 inches more of rain from the Louisiana/Texas border northeastward into Tennessee and Kentucky through Friday. Some spots may get as much as a foot of rain. Flooding is a possibility.

The threat of heavy rains for Houston has ended, but catastrophic and potentially deadly flooding will continue around Houston, Beaumont, Port Arthur and southwest Louisiana for the rest of the week.

5:25 p.m.: Death toll rises to 21, CBS News confirms

Two are confirmed drowned near the town of Simonton, Texas. Deputies say the two drove into high water.

The Associated Press cites authorities who say a married couple drove their pickup truck into Harvey's floodwaters has drowned after the current from a nearby creek swept them away.

Fort Bend County Sheriff's Maj. Chad Norvell says the couple was on the phone with 911 asking for help when the line went silent. When officers found the truck, it was completely submerged.

Norvell identified the couple as 65-year-old Donald Rogers and 58-year-old Rochelle Rogers.

They lived in a rural area of the county southwest of Houston and they were headed to a relative's house nearby.

4:59 p.m.: Flooding in nursing home traps 70 residents

Residents rescued from Port Arthur nursing home 02:22

About 70 residents at a nursing home in Port Arthur, Texas, were trapped in knee-deep water with scarce food Wednesday afternoon, CBS affiliate KFDM-TV reports.

Employees tell KFDM the situation became dire at the Lake Arthur Place nursing home, where many residents were confined to wheelchairs.

Police officers arrived on the scene around 3:30 p.m. ET while KFDM was live on the air from the nursing home. Footage showed one elderly resident being pushed through several feet of water and lifted into a boat outside the facility.

4:34 p.m.: Retirement home residents evacuated by airboat

Thousands fill crowded Houston shelters as rescues continue 05:27

Residents of a retirement home in Orange, Texas, are being evacuated by airboat from the flooded facility about 30 miles east of Beaumont.

Agents from the Florida Wildlife Commission and two trucks from the Louisiana Army National Guard are participating in the evacuation of the Golden Years Retirement home.

Water in the parking lot was thigh deep about 3 p.m. Wednesday as guardsmen entered the building and carried residents from the second floor where they had been sheltering in a dry area of the small facility.

Wildlife agents then floated the residents, one by one in a Wildlife Commission airboat to the truck. About six residents had been rescued as of midafternoon and it was unclear how many more were sheltering on the second floor.

Texas Health and Human Services records show Golden Years has a licensed capacity of 16. Department spokeswoman Carrie Williams said more than 2,800 residents of about 120 long-term care facilities in areas affected by Harvey had been evacuated by Tuesday. That number was expected to grow.

3:43 p.m.: Death toll rises to 19 as 2 more confirmed dead

The number of people killed in relation to Harvey is now at least 19, CBS News confirms.

Joshua Feuerstein, 33, died when he drove his pickup into standing water Monday. Another man, who has not been identified, drowned Monday night after reportedly trying to swim across floodwaters on Houston's Grand Parkway.

The death toll stood at 10 Wednesday morning and rose to 11, after a woman was found dead in Beaumont, Texas. It reached 17 after police discovered the bodies of six missing family members in a partially submerged van in a bayou in Houston.

3:05 p.m.: Death row inmate wins temporary reprieve in Texas

A 36-year-old inmate scheduled for execution in Texas next week was granted a temporary reprieve because of Harvey.

Bexar County prosecutors cited "extraordinary circumstances" in asking to move Juan Castillo's execution to Dec. 14 because some of his legal team is based in Harris County, which has been slammed by the tropical storm. On Wednesday, a state judge agreed.

Castillo had been scheduled for lethal injection Sept. 7 in Huntsville for the slaying of 19-year-old Tommy Garcia Jr. during a 2003 robbery in San Antonio.

2:59 p.m.: Trump to Harvey victims: "We are here with you every single step of the way"

President Trump, speaking in Springfield, Missouri, addressed the ongoing crisis on the Gulf Coast before delivering remarks on tax reform Wednesday afternoon.

"Our first responders have been doing absolutely heroic work to shepherd people out of harm's way," Mr. Trump said. "To those affected by this storm, we are praying for you, and we are here with you every single step of the way."

Mr. Trump spoke in Missouri one day after traveling to Texas to meet with first responders and federal officials leading the response to the storm.

"Recovery will be tough," Mr. Trump said Wednesday. "But I have seen the resilience of the American spirit firsthand." For more on Mr. Trump's remarks, follow our coverage here.

2:44 p.m.: Houston airports plan to resume limited operations

George Bush Intercontinental Airport and William P. Hobby Airport in Houston say they will resume limited flight operations Wednesday afternoon as floodwaters continue to recede.

The airports plan to resume limited service for domestic flights at 4 p.m. CT.

"We will attempt to begin a phased return to service, with full service expected by this weekend," both airports said on Facebook.

The airports cautioned that many roads in Houston remain flooded, and said only confirmed ticket holders on scheduled flights should travel to the airport.

2:30 p.m.: Bodies of 6 family members found in submerged van

Harris County Sheriff Ed Gonzalez updated reporters again Wednesday afternoon. He confirmed that police had found the dead bodies of six family members in a van that was submerged in a bayou in Houston.

The dead ranged in age from 6 to 84 and included four children.

Gonzalez said one person was able to escape the van and was found clinging to a tree on Sunday. Rescuers were unable to reach the van, which was already submerged in four feet of water.

Officers discovered the van again Wednesday as flood waters receded and were able to see two bodies inside the van. Divers arrived and discovered the bodies of all six family members later Wednesday afternoon.

"We want to thank everybody for all the support and help they gave us," a family member of the deceased told CBS News correspondent Jericka Duncan in Houston.

2:15 p.m.: Trump to speak soon in Missouri

President Trump has arrived in Springfield, Missouri, where he's scheduled to deliver a speech on tax reform at 2:30 p.m. Follow along with CBS News here.

1:37 p.m.: Police find two bodies in van submerged by flooding

Harris County Sheriff Ed Gonzalez said officials had found a van that was submerged by floodwaters while carrying six members of a family on Sunday. 

Gonzalez told reporters the van was found partially submerged in a bayou alongside a road in Houston. Police could see two bodies inside the van and a diving crew was en route to search for others, Gonzalez said.

He said the family members' next of kin had been notified. The family had said four children and their great-grandparents were inside when the van was swept away.

1:20 p.m.: Governor: "Worst not yet over" in southeast Texas

Texas Gov. Greg Abbott said floodwaters in Houston have begun receding, but areas of southeast Texas where heavy rains continue are experiencing "catastrophic conditions [that] are a threat to life and property."

At a press conference Wednesday, Abbott gave an update on the response to the flooding and continuing rainfall that has left at least 11 people dead. 

"The worst is not yet over for southeast Texas," Abbott said.

Abbott said about 2,000 more Texas National Guard members have been activated to assist in the response, bringing the total number of Texas guardsmen deployed to 14,000. He said approximately 10,000 members of the National Guard from other states are expected to arrive in the state soon.

Tropical Storm Harvey, by the numbers. CBS News

The Department of Defense was providing 200 boats and 200 vehicles to help search and rescue and recovery efforts, Abbott said. 

Abbott implored residents to stay off the road, saying that most of those killed in the storm and flooding have died while driving through water. He said about 32,000 people are in shelters across the state, and 30,000 beds are available as needed.

The federal government has approved the addition of 14 more counties to its disaster declaration, opening the door for federal assistance. Residents in 11 of those counties can now apply for individual assistance from the Federal Emergency Management Agency, Abbott said. He directed residents to to apply for aid.

The Federal Emergency Management Agency has approved $37 million in individual assistance so far, Abbott said.

12:51 p.m.: Texas governor gives an update on Harvey response

Texas Gov. Greg Abbott is delivering an update on search and rescue and recovery efforts from Austin, Texas. Watch live in the player at the top of this article.

12:44 p.m.: Cowboys-Texans preseason game canceled

An NFL preseason game between the Dallas Cowboys and Houston Texans scheduled for Thursday has been canceled after initially being relocated from Houston to Dallas. 

After the Texans played their preseason game in New Orleans last weekend, they went to North Texas instead of home in the wake of Harvey. The Texans practiced Monday and Tuesday at the Cowboys' practice facility.

It wasn't immediately clear when the Texans might be able to return to Houston for the first time since the hurricane made landfall last Friday.

12:23 p.m.: Coast Guard has rescued 4,200 people, FEMA says

The U.S. Coast Guard has rescued more than 4,200 people and 1,000 pets stranded by Harvey's floodwaters in recent days, the Federal Emergency Management Agency (FEMA) says.

In a release, FEMA, which is coordinating the federal government's response to the storm and subsequent flooding, says more than 12,400 federal employees from 17 agencies and departments are supporting rescue and recovery efforts in Texas and Louisiana. The agency said more than 1,100 FEMA search and rescue personnel have rescued 2,500 survivors from flooding in Galveston and Houston. 

FEMA says more than 63,000 people or households have been approved to receive federal assistance for recovering from the storm.

12:05 p.m.: Where is Tropical Storm Harvey?

Harvey made landfall for the second time around 5 a.m. just west of Cameron, Louisiana, CBS News meteorologist David Parkinson reports. The storm now has winds of 45 mph and is gradually weakening. It's traveling northeast at 7 mph, and is expected to end up just west of Alexandria, Louisiana, by Wednesday evening.

By Thursday morning, Harvey is expected to be downgraded to a tropical depression as it reaches Interstate 20 at the border between Louisiana and Mississippi.

This satellite image shows Harvey hitting parts of Alabama, Arkansas, Louisiana, Mississippi and Texas on Aug. 30, 2017. CBS News

Rain in Houston is coming to an end, but torrential downpours continue in far east Texas near Beaumont and Port Arthur. That rain will continue this morning before gradually shifting north. Beaumont can expect another inch or two of rain.

The area around Alexandria and Natchitoches, Louisiana, could get another 6 inches of rain throughout the day. The heaviest rain could fall just along the Texas-Louisiana border as the west side of the storm moves in.

Going forward, heavy rain will follow the track of Harvey into the Ohio River valley. Northern Mississippi and western Tennessee, possibly including the Memphis area, could get 5 inches of rain within 24 hours, which could cause flash flooding.

11:43 a.m.: Chemical plant at risk of explosion prompts evacuation

A chemical plant is at risk of exploding after floodwaters caused by Harvey knocked out electricity to the facility in Crosby, Texas, officials said Tuesday.

Arkema Inc. said in a statement that it was evacuating a small number of remaining employees from the plant in Crosby, about 20 miles northeast of downtown Houston. The Harris County Fire Marshal's Office ordered residents in a 1.5-mile radius around the site to evacuate Tuesday evening.

The plant manufactures products and chemicals that must be stored at low temperatures, the company said. Flooding knocked out power to its warehouses, and backup generators were also compromised. Rising temperatures in the storage facilities could trigger a chemical reaction that sparks a fire or explosion, the company said. 

Read the full story here.

11:22 a.m.: Officials warn of potential levee breach in Houston suburb

Harris County flood control officials are concerned that a levee could fail in a suburban Houston subdivision in the north of the county, thus adding to the Harvey-related floods. 

Spokesman Jeff Lindner says if the weakened section of levee along Cypress Creek in Inverness Forest is breached, water is going to rise "very quickly and very fast, and it is going to be deep." 

He says the water could reach the rooftops of homes immediately in the levee area. The area is under a mandatory evacuation order due to Harvey, but some residents have remained. 

Lindner says county authorities are working with several agencies to figure out how to increase pressure on the outside of the levee to compensate for the tremendous pressure inside due to record amounts of water.

10:28 a.m.: Nearly all Houston-area waterways crest

Officials say nearly all Houston-area waterways inundated by Harvey's record rainfall have crested, but that water levels continue to rise in two flood-control reservoirs.

Jeff Lindner of the Harris County Flood Control District says river levels are going down Wednesday "for the first time in several days."

Army Corps of Engineers regional engineer Edmond Russo says water in the Barker and Addicks reservoirs in west Houston rose slightly overnight and is likely to crest Wednesday, but slightly below forecast levels.

The reservoirs have received 32 to 35 inches of rain since Harvey hit last weekend, but Russo says less than an inch of rain is forecast in the coming week.

Lindner says "we're getting very close to the peak of both reservoirs."

9:02 a.m.: Thousands at Houston convention center

Thousands fill crowded Houston shelters as rescues continue 05:27

About 8,300 people spent the night at the George R. Brown Convention Center Tuesday -- about a thousand fewer people than the day before. The Red Cross told CBS News Wednesday morning that everyone inside the convention center now has a cot and people can also take showers.

On Tuesday, "CBS This Morning" co-host Norah O'Donnell spoke to a woman about the conditions inside. She went back later in the day to see the situation herself.

"Houston wasn't prepared. The government wasn't prepared. The mayor wasn't prepared," said Harvey evacuee Michelle Lavan.

8:15 a.m.: Large refinery shutting down due to flooding

Motiva Enterprises announced early Wednesday that it had started a controlled shutdown of its major refinery in Port Arthur, Texas, because of flooding. The company said the refinery would be restarted when the floodwaters receded.

6:03 a.m.: Dire situation in Port Arthur

CBS Beaumont affiliate KFDM-TV reported the situation in Port Arthur was "dire" early Wednesday, with homes expected to fill with rising floodwaters and residents unsure how to evacuate the city. Jefferson County Sheriff Zena Stephens told the station some county residents had gone into "survival mode."

After five days of torrential rain, the latest weather forecast predicted less than an inch more and perhaps even sunshine for the Houston area.

However, the dangers were far from over. Authorities reported at least 10 deaths from Harvey.

In all, more than 17,000 people have sought refuge in Texas shelters, and that number seemed certain to increase, the American Red Cross said.

Houston's largest shelter housed 10,000 of the displaced as two additional mega-shelters opened Tuesday for the overflow. Louisiana's governor offered to take in Harvey victims from Texas, and televangelist Joel Osteen opened his Houston megachurch, a 16,000-seat former arena, after critics blasted him on social media for not acting to help families displaced by the storm.

12:50 a.m.: Houston warns residents of imposter ICE agents

The city of Houston Tuesday night warned residents about imposter Homeland Security agents who are telling people to evacuate their homes, in what the city said it believes is an effort to rob houses. 

Real Homeland Security Investigations (HSI) agents wear badges labeled "special agent" and they carry credentials, Homeland Security and Immigration and Customs Enforcement (ICE) said in a statement. Residents should ask to see the badges and the credentials of anyone who says they are agents.

Additionally, ICE agents are not enforcing immigration raids during the emergency.

Find previous updates on Harvey here.

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