Tech Catastrophic flooding continues as Harvey moves northeast, causing explosions at a Texas chemical plant — here's the latest

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Hurricane Harvey made landfall in Texas on Friday, and rainfall has reached over 4 feet in some areas, including Houston. At least 41 deaths have been reported.

Harvey, then still a tropical storm, seen approaching the Texas Gulf Coast via satellite on Thursday morning. play

Harvey, then still a tropical storm, seen approaching the Texas Gulf Coast via satellite on Thursday morning.

(NOAA/Handout via Reuters)
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The storm's devastation continues to create problems in Texas. Early Thursday morning, a chemical plant in Crosby — 25 miles northeast of Houston — reported two explosions caused by un-refrigerated organic peroxides that need to be stored at a low temperature.

The plant has no power, so there's a risk that the plant could cause more explosions as the chemicals' temperatures continue to rise. People nearby have been advised not to return until the chemicals burn out.

Harvey's death toll continues to rise as family members and authorities report more fatalities. Galveston County Emergency Management confirmed three more deaths on Wednesday night, bringing the total so far to at least 41.

Some 33,000 people in Texas have sought refuge in more than 230 shelters, and 325,000 have signed up for disaster assistance, officials said.

"This is a landmark event for Texas," Brock Long, the Federal Emergency Management Agency administrator, said Monday. "Texas has never seen an event like this."

Record rainfall and catastrophic flooding

Harvey arrived on the shores of Texas as a hurricane Friday night, packing sustained wind speeds as high as 130 mph. It made a second landfall as a tropical storm on the Texas border near Cameron, Louisiana, around 4:30 a.m. CT on Wednesday. As of Thursday morning, it was classified a tropical depression with maximum winds of 20 mph.

On Tuesday, a rain gauge near Highlands, Texas, a city east of Houston, registered 51.88 inches of rainfall — breaking the record for most rainfall from a single storm in the entire continental US.

The "relentless, torrential" rain has moved east, and forecasters don't expect it to fizzle out until at least Saturday. Louisiana, Tennessee, northern Mississippi, and eastern Arkansas could get 3 to 5 more inches of rain by Saturday, with isolated areas seeing up to 10 inches.

Harvey was moving northeast across the top of Louisiana at 10 mph as of 10 a.m. CDT on Thursday, leaving flooding and destruction in its wake. The center of the storm was sitting about 150 miles north of Baton Rouge.

The National Weather Service called the rainfall event "unprecedented", and while the National Hurricane Center's warnings of "catastrophic and life-threatening flooding" have subsided, the floodwaters in southeast Texas and southwest Louisiana will take days, if not a week, to retreat.

Interstate 45 seen during widespread flooding in Houston on August 27. play

Interstate 45 seen during widespread flooding in Houston on August 27.

(REUTERS/Richard Carson)

The storm surge — the quick rise in water caused by a hurricane's strong winds — crested several feet at the height of the storm on the Texas coast. By Thursday, all local storm surge warnings had ended.

'Widespread devastation'

Dominic Dominguez looks through a stack of boats jumbled in the wake of Hurricane Harvey in in Rockport, Texas on Sunday, Aug. 27, 2017. play

Dominic Dominguez looks through a stack of boats jumbled in the wake of Hurricane Harvey in in Rockport, Texas on Sunday, Aug. 27, 2017.

(AP Photo/Eric Gay)

Harvey's devastating hurricane-force winds, storm surge on the Gulf Coast, and landmark flooding inland combined to make it a catastrophic event for Texas.

Officials expect more deaths to be confirmed in the coming days. Houston police Chief Art Acevedo told The Associated Press on Monday that he was "really worried about how many bodies we're going to find" when the floodwaters recede.

The Houston Chronicle reported Tuesday that a police Sgt. Steve Perez, a 60-year-old man who had been on the force for 34 years, died in his patrol car after he took a wrong turn and got caught in the high water.

Long said in a press conference Monday (and reiterated on Wednesday) that crews were still focusing on rescue and recovery and would have to wait until the storm passed to fully evaluate the damage. Flooding and debris on roadways are still keeping emergency crews from reaching some places.

Accounts of destruction in the areas hit hardest by Harvey have been steadily emerging.

Emergency crews plucked people from rooftops using aircraft, dump trucks, and boats as the floodwaters rose. Texas Gov. Greg Abbott said on Wednesday that 8,500 people had been rescued statewide.

The Associated Press estimated that the storm knocked out power for about 300,000 residents over the weekend, and that there were still 107,000 power outages in Texas on Wednesday afternoon.

Houston Mayor Sylvester Turner said 911 emergency services in the city had received over 56,000 calls by Monday. By Tuesday, police officers and firefighters had saved more than 3,500 individuals in Houston, Acevedo said.

Turner announced a curfew on Tuesday night, extending from 12 a.m. to 5 a.m. Wednesday, amid reports of looting, armed robberies and people impersonating police officers.

Near Port Arthur, Texas, a city located about 90 miles east of Houston in Jefferson County, over 26 inches of rain were recorded on Tuesday alone. Residents in the area were desperate to escape, and 150 boats came to find them. Mayor Derrick Freeman told CBS News that 20,000 homes had as much as 6 feet of water in them.

The coastal city of Rockport, Texas, located near the point where the hurricane initially made landfall, sustained extreme damage. Residents have been told it is not safe to return for the time being (a mandatory evacuation was put in place there). Mayor Charles Wax of Rockport told CNN there had "been widespread devastation."

As the storm approached Friday, Mayor Pro Tem Patrick Rios of Rockport requested that people who did not evacuate write their names and Social Security numbers on their arms in case rescuers later needed to identify them.

A Rockport, Texas, firefighter went door-to-door on Saturday looking for people who may need help after Hurricane Harvey passed through. play

A Rockport, Texas, firefighter went door-to-door on Saturday looking for people who may need help after Hurricane Harvey passed through.

(Joe Raedle/Getty Images)

Harvey could cause up to $75 billion in damage, Enki Research estimated — and other projections are even higher.

The Category 4 storm Hurricane Ike, the most recent major hurricane to hit the Texas Gulf Coast, caused $38 billion in damage in 2008. When Hurricane Katrina ravaged New Orleans and the Gulf Coast in 2005, it caused over $100 billion in damage.

Why hurricane categories don't tell the full story

Evacuees wade down a flooded section of Interstate 610 in Houston as floodwaters rise on Sunday. play

Evacuees wade down a flooded section of Interstate 610 in Houston as floodwaters rise on Sunday.

(AP Photo/David J. Phillip)

Hal Needham, a hurricane scientist at Louisiana State University, wrote in a blog post on the weather site WXshift that a storm's category doesn't fully convey how dangerous rainfall could be and how much damage it could cause.

"Hurricanes and tropical storms throw three hazards at us: wind, rainfall, and storm surge," he wrote. "Think of the impacts separately. Storms with weaker winds are more likely to stall and dump heavier rainfall. This shocks people, as it would seem intuitive that a Category 5 hurricane would tend to dump more rain than a Category 1 hurricane. But the opposite is true."

While strong winds can rip shingles off roofs and tear down power lines, flooding often causes more widespread, costlier damage — and can be more dangerous for humans. The scale used to distinguish a hurricane from a tropical storm is based solely on maximum sustained wind, but Needham explained that "storms are too complex to define by one number."

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(Ana Pelisson/Business Insider)

Trump's 'first serious' crisis

Hurricane Harvey is Donald Trump's "first serious" crisis from a natural disaster as president. He flew to Corpus Christi Tuesday morning with first lady Melania Trump to survey the damage and relief efforts, and made a stop in Austin to attend a briefing on emergency operations from Texas leadership.

"We want to do it better than ever before. We want to be looked at in five years, in 10 years from now as, this is the way to do it," Trump said at a press conference alongside Texas Gov. Greg Abbott. "This was of epic proportion. Nobody's ever seen anything like this."

President Donald Trump, flanked by Texas Gov. Greg Abbott and first lady Melania Trump speaks during a briefing on Harvey relief efforts, Tuesday, Aug. 29, 2017, at Firehouse 5 in Corpus Christi, Texas. play

President Donald Trump, flanked by Texas Gov. Greg Abbott and first lady Melania Trump speaks during a briefing on Harvey relief efforts, Tuesday, Aug. 29, 2017, at Firehouse 5 in Corpus Christi, Texas.

(AP Photo/Evan Vucci)

How Texas and Louisiana prepared

Thousands of Texas residents, many in the towns of Port Aransas, Port O'Connor, and Corpus Christi, near where the hurricane first made landfall, evacuated before the storm. The Corpus Christi Regional Transportation Authority began busing evacuees to San Antonio on Thursday.

Houston didn't order evacuations before the storm hit, and only issued orders in some areas of Harris County on Monday and Tuesday. Jeff Masters, a meteorologist at The Weather Company who cofounded the weather-data website Weather Underground, recommended evacuating only if local emergency experts said to do so. Many of the deaths during Hurricane Rita in 2005 occurred as people tried to evacuate.

Residents wade through floodwaters from Tropical Storm Harvey in Beaumont Place, Houston on August 28, 2017. play

Residents wade through floodwaters from Tropical Storm Harvey in Beaumont Place, Houston on August 28, 2017.

(Jonathan Bachman/Reuters)

Abbott declared a state of disaster August 23 for 30 Texas counties, then added 20 counties to that declaration on Saturday and another four on Sunday, freeing up state money and resources to respond to the storm.

He also issued a federal disaster declaration in 33 counties, which Trump approved. Trump has approved emergency disaster declarations in both Texas and Louisiana, directing federal aid toward the affected areas.

On Monday morning, Abbott activated the entire Texas National Guard of 12,000 people, and increased the number deployed to 24,000 National Guard troops on Thursday.

Before the storm hit, the American Red Cross opened pop-up shelters throughout Houston and San Antonio. Dallas opened shelters as well, and Mayor Mike Rawlings invited those stranded to seek refuge in a press conference Tuesday morning.

Turner, Houston's mayor, said Tuesday that more than 9,000 people are seeking shelter at the George R. Brown Convention Center, the largest shelter that has been opened so far. It has a 5,000-cot capacity.

People sleep on the floor at the George R. Brown Convention Center that has been set up as a shelter for evacuees escaping the floodwaters from Tropical Storm Harvey in Houston, Texas, Tuesday, Aug. 29, 2017. play

People sleep on the floor at the George R. Brown Convention Center that has been set up as a shelter for evacuees escaping the floodwaters from Tropical Storm Harvey in Houston, Texas, Tuesday, Aug. 29, 2017.

(Associated Press/LM Otero)

The Health and Human Services Department said it was deploying assets to Texas and Louisiana ahead of Harvey's landfall, moving six teams of emergency medical responders to the Dallas area as well as teams to support medical personnel in both states.

FEMA said it readied 3 million meals, 2.8 million liters of water, and 8,800 staff members for the storm response.

Long, the FEMA administrator, recommended that people seeking to help those affected by the storm donate to an organization on the site www.nvoad.org.