Floodwaters rise in Houston; search goes on for 30 missing

Flooding Strands Hundreds in Homes, Parking Lots and Stadium

HOUSTON (AP) -- Floodwaters kept rising Tuesday across much of Texas as storms dumped almost another foot of rain on the Houston area, stranding hundreds of motorists and inundating the famously congested highways that serve the nation's fourth-largest city.

Meanwhile, the search went on for 30 people who were missing after flooding along the Blanco River in Central Texas, including a group of people who disappeared after a vacation home was swept down the river and slammed into a bridge.

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Texas and mexican border , Oklahoma flooding - severe weather 5/25 (AP Exchange)
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Floodwaters rise in Houston; search goes on for 30 missing
HOUSTON, TX - MAY 27: The Brays Bayou flows after massive flooding May 27, 2015 in Houston, Texas. At least 19 people have been killed across Texas and Oklahoma after severe weather, including catastrophic flooding and tornadoes, struck over the past several days, with more rain expected. (Photo by Eric Kayne/Getty Images)
MIDLOTHIAN, TX - MAY 27: Workers tend to equipment used to pump water from Padera Lake as water pours over a temporary dam on May 27, 2015 in Midlothian, Texas. Officials feared that the temporary dam on Padera Lake would fail due to recent heavy rains in the area. Areas throughout Texas have expierenced flash flooding and numerous deaths due to weeks of heavy rainfall. (Photo by Tom Pennington/Getty Images)
SAN MARCOS, TX - MAY 27: Storm destruction along the Blanco River May 26, 2015 in San Marcos, Texas. Central Texas has been inundated with tornadoes and flash flooding the past several days. (Photo by Drew Anthony Smith/Getty Images)
SAN MARCOS, TX - MAY 27: Storm destruction along the Blanco River May 27, 2015 in San Marcos, Texas. Central Texas has been inundated with tornadoes and flash flooding the past several days. (Photo by Drew Anthony Smith/Getty Images)
HOUSTON, TX - MAY 27: Trees are submerged at Buffalo Bayou park after massive flooding May 27, 2015 in Houston, Texas. At least 19 people have been killed across Texas and Oklahoma after severe weather, including catastrophic flooding and tornadoes, struck over the past several days, with more rain expected. (Photo by Eric Kayne/Getty Images)
HOUSTON, TX - MAY 27: Diego Singleton's vehicle sits on Allen Parkway, the last remaining vehicle to be towed from underneath the Montrose Blvd. overpass following massive flooding May 27, 2015 in Houston, Texas. At least 19 people have been killed across Texas and Oklahoma after severe weather, including catastrophic flooding and tornadoes, struck over the past several days, with more rain expected. (Photo by Eric Kayne/Getty Images)
WIMBERLEY, TX - MAY 26: A house near the Blanco River sustained heavy damage May 26, 2015 in Wimberley, Texas. Central Texas has been hit with severe weather, including catastrophic flooding and tornadoes over the past several days. (Photo by Drew Anthony Smith/Getty Images)
WIMBERLEY, TX - MAY 26: Debris is collected in front of Rio Bonito Resort May 26, 2015 in Wimberley, Texas. Central Texas has been hit with severe weather, including catastrophic flooding and tornadoes over the past several days. (Photo by Drew Anthony Smith/Getty Images)
WIMBERLEY, TX - MAY 26: Faculty and volunteers organize flood relief supplies at Wimberley High School May 26, 2015 in Wimberley, Texas. Central Texas has been hit with severe weather, including catastrophic flooding and tornadoes over the past several days. (Photo by Drew Anthony Smith/Getty Images)
WIMBERLEY, TX - MAY 26: Clothes and other flood relief supplies are gathered at Wimberley High School May 26, 2015 in Wimberley, Texas. Central Texas has been hit with severe weather, including catastrophic flooding and tornadoes over the past several days. (Photo by Drew Anthony Smith/Getty Images)
Vehicles left stranded on a flooded Interstate 45 in Houston, Texas on May 26, 2015. Heavy rains throught Texas put the city of Houston under massive ammounts of water, closing roadways and trapping residents in their cars and buildings, according to local reports. Rainfall reached up to 11 inches(27.9cm) in some parts of the state, national forecasters reported, and the heavy rains quickly pooled over the state's already saturated soil. AFP PHOTO/AARON M. SPRECHER (Photo credit should read Aaron M. Sprecher/AFP/Getty Images)
Water is seen along Memorial Drive in Houston, Texas, on May 26, 2015. Heavy rains throught Texas put the city of Houston under massive amounts of water, closing roadways and trapping residents in their cars and buildings, according to local reports. Rainfall reached up to 11 inches (27.9cm) in some parts of the state, according to national forecasters, and the heavy rains quickly pooled over the state's already saturated soil. AFP PHOTO/AARON M. SPRECHER (Photo credit should read Aaron M. Sprecher/AFP/Getty Images)
AUSTIN, TX - MAY 25: Murphy Canning and Annika Rolston watch as a street remains underwater from days of heavy rain on May 25, 2015 in Austin, Texas. Texas Gov. Greg Abbott toured the damage zone where one person is confirmed dead and at least 12 others missing in flooding along the Rio Blanco, which reports say rose as much as 40 feet in places, caused by more than 10 inches of rain over a four-day period. The governor earlier declared a state of emergency in 24 Texas counties. (Photo by Drew Anthony Smith/Getty Images)
WIMBERLEY, TX - MAY 26: Debris is collected in front of Rio Bonito Resort May 26, 2015 in Wimberley, Texas. Central Texas has been hit with severe weather, including catastrophic flooding and tornadoes over the past several days. (Photo by Drew Anthony Smith/Getty Images)
A vehicle left stranded on a flooded Interstate 45 in Houston, Texas on May 26, 2015. Heavy rains throught Texas put the city of Houston under massive ammounts of water, closing roadways and trapping residents in their cars and buildings, according to local reports. Rainfall reached up to 11 inches(27.9cm) in some parts of the state, national forecasters reported, and the heavy rains quickly pooled over the state's already saturated soil. AFP PHOTO/AARON M. SPRECHER (Photo credit should read Aaron M. Sprecher/AFP/Getty Images)
Water is seen at the top of a sign along a bike path near Memorial Drive in Houston, Texas on May 26, 2015. Heavy rains throught Texas put the city of Houston under massive amounts of water, closing roadways and trapping residents in their cars and buildings, according to local reports. Rainfall reached up to 11 inches (27.9cm) in some parts of the state, according to national forecasters, and the heavy rains quickly pooled over the state's already saturated soil. AFP PHOTO/AARON M. SPRECHER (Photo credit should read Aaron M. Sprecher/AFP/Getty Images)
Vehicles are left stranded on Texas State Highway 288 in Houston, Texas on May 26, 2015. Heavy rains throught Texas put the city of Houston under massive amounts of water, closing roadways and trapping residents in their cars and buildings, according to local reports. Rainfall reached up to 11 inches (27.9cm) in some parts of the state, according to national forecasters, and the heavy rains quickly pooled over the state's already saturated soil. AFP PHOTO/AARON M. SPRECHER (Photo credit should read Aaron M. Sprecher/AFP/Getty Images)
AUSTIN, TX - MAY 25: Parts of the city are shown inundated after days of heavy rain on May 25, 2015 in Austin, Texas. Texas Gov. Greg Abbott toured the damage zone where one person is confirmed dead and at least 12 others missing in flooding along the Rio Blanco, which reports say rose as much as 40 feet in places, caused by more than 10 inches of rain over a four-day period. The governor earlier declared a state of emergency in 24 Texas counties. (Photo by Drew Anthony Smith/Getty Images)
AUSTIN, TX - MAY 25: Rising floodwaters at Shoal Creek are shown after days of heavy rain on May 25, 2015 in Austin, Texas. Texas Gov. Greg Abbott toured the damage zone where one person is confirmed dead and at least 12 others missing in flooding along the Rio Blanco, which reports say rose as much as 40 feet in places, caused by more than 10 inches of rain over a four-day period. The governor earlier declared a state of emergency in 24 Texas counties. (Photo by Drew Anthony Smith/Getty Images)
AUSTIN, TX - MAY 25: Parts of the city are shown inundated after days of heavy rain on May 25, 2015 in Austin, Texas. Texas Gov. Greg Abbott toured the damage zone where one person is confirmed dead and at least 12 others missing in flooding along the Rio Blanco, which reports say rose as much as 40 feet in places, caused by more than 10 inches of rain over a four-day period. The governor earlier declared a state of emergency in 24 Texas counties. (Photo by Drew Anthony Smith/Getty Images)
AUSTIN, TX - MAY 25: The flooded Whole Earth Provisions Company on Lamar Street is shown after days of heavy rain on May 25, 2015 in Austin, Texas. Texas Gov. Greg Abbott toured the damage zone where one person is confirmed dead and at least 12 others missing in flooding along the Rio Blanco, which reports say rose as much as 40 feet in places, caused by more than 10 inches of rain over a four-day period. The governor earlier declared a state of emergency in 24 Texas counties. (Photo by Drew Anthony Smith/Getty Images)
AUSTIN, TX - MAY 25: Ben Sioberman works to get water out of the flooded Whole Earth Provisions Company on Lamar Street after days of heavy rain on May 25, 2015 in Austin, Texas. Texas Gov. Greg Abbott toured the damage zone where one person is confirmed dead and at least 12 others missing in flooding along the Rio Blanco, which reports say rose as much as 40 feet in places, caused by more than 10 inches of rain over a four-day period. The governor earlier declared a state of emergency in 24 Texas counties. (Photo by Drew Anthony Smith/Getty Images)
AUSTIN, TX - MAY 25: Parts of the city are shown inundated after days of heavy rain on May 25, 2015 in Austin, Texas. Texas Gov. Greg Abbott toured the damage zone where one person is confirmed dead and at least 12 others missing in flooding along the Rio Blanco, which reports say rose as much as 40 feet in places, caused by more than 10 inches of rain over a four-day period. The governor earlier declared a state of emergency in 24 Texas counties. (Photo by Drew Anthony Smith/Getty Images)
AUSTIN, TX - MAY 25: Tape is stretched across a flooded Sixth Street after days of heavy rain on May 25, 2015 in Austin, Texas. Texas Gov. Greg Abbott toured the damage zone where one person is confirmed dead and at least 12 others missing in flooding along the Rio Blanco, which reports say rose as much as 40 feet in places, caused by more than 10 inches of rain over a four-day period. The governor earlier declared a state of emergency in 24 Texas counties. (Photo by Drew Anthony Smith/Getty Images)
WIMBERLEY, TX - MAY 25: A vehicle travels Ranch to Market Road 150 on May 25, 2015 outside Wimberly, Texas. Texas Gov. Greg Abbott toured the damage zone where one person is confirmed dead and at least 12 others missing in flooding along the Rio Blanco, which reports say rose as much as 40 feet in places, caused by more than 10 inches of rain over a four-day period. The governor earlier declared a state of emergency in 24 Texas counties. (Photo by Drew Anthony Smith/Getty Images)
In this aerial photo a parking lot of Wal-Mart is submerged after the San Marcos River flooded in San Marcos, Texas, Sunday, May 24, 2015. Record rainfall was wreaking havoc across a swath of the U.S. Midwest on Sunday, causing flash floods in normally dry riverbeds, spawning tornadoes and forcing at least 2,000 people to flee. (Rodolfo Gonzalez/Austin American-Statesman via AP)
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Houston authorities recovered three more bodies from the floodwaters - two of them in the city and a third in a vehicle on Interstate 45. That brought to 11 the number of people killed by the holiday weekend storms in Oklahoma and Texas.

The water continued rising overnight as the area received about 11 more inches, much of it in a six-hour period.

Firefighters carried out more than 500 water rescues, mostly stranded motorists. And at least 2,500 vehicles were abandoned on the streets by drivers seeking higher ground, said Rick Flanagan, Houston's emergency management coordinator.

"You cannot candy coat it. It's absolutely massive," Texas Gov. Greg Abbott said after touring the destruction.

The flooding closed several highways in Houston, and the ones that stayed open became a gridlocked mess.

Interstate 45 near downtown was backed up for miles on Tuesday morning, with a handful of motorists traveling the wrong way on the highway to retreat from high water.

The small cars weaved between massive 18-wheelers as drivers stared at them in disbelief. With no end to the backup in sight, some drivers got off the freeway, only to be held up again by water covering nearby access roads.

In the Heights neighborhood about 5 miles from downtown, groups of people roamed the streets after escaping their stalled cars, and police cruisers blocked some roads where the water had caused dangerous conditions.

Some motorists were stuck on Interstate 45 all night, sleeping in their cars until the backup was cleared about 8 a.m.

NBA fans at the Toyota Center, where the Rockets hosted a Western Conference finals game against Golden State on Monday, were asked with about two minutes left in the game not to leave the arena because of the severe weather.

The game ended before 11 p.m., but about 400 people remained in their seats at 1:30 a.m., choosing to stay in the building rather than brave the flooded roads that awaited them outside.

A total of 30 people were unaccounted in Hays County, about 35 miles southwest of Austin, county Commissioner Will Conley said.

Crews were also searching for victims and assessing damage just across the Texas-Mexico border in Ciudad Acuna, where a tornado killed 14 people Monday.

Some of the worst flooding damage in Texas was in Wimberley, a popular tourist town along the Blanco River in the corridor between Austin and San Antonio. That's where the vacation home was swept away.

The "search component" of the mission ended Monday night, meaning no more survivors were expected to be found, said Trey Hatt, a spokesman for the Hays County Emergency Operations Center.

One person who was rescued from the home told workers that the other 12 inside were all connected to two families. Young children were among those believed to be missing.

But by early Tuesday, Hays County spokeswoman Laureen Chernow acknowledged discrepancies concerning exactly how many people were in the home.

"We don't have that certainty," Chernow said.

Eight of the missing were friends and family who had gathered for the holiday, said Kristi Wyatt, a spokeswoman for the City of San Marcos. She said three more were members of another family in a separate situation. An unrelated person was also missing, Wyatt said.

The Blanco crested above 40 feet - more than triple its flood stage of 13 feet. The river swamped Interstate 35 and closed parts of the busy north-south highway. Rescuers used pontoon boats and a helicopter to pull people out.

Hundreds of trees along the Blanco were uprooted or snapped, and they collected in piles of debris up to 20 feet high.

A spokeswoman for the flood district of Harris County, which includes Houston, said up to 700 homes sustained some level of damage.

The deaths in Texas included a man whose body was pulled from the Blanco; a 14-year-old who was found with his dog in a storm drain; a high school senior who died Saturday after her car was caught in high water; and a man whose mobile home was destroyed by a reported tornado.

The Oklahoma Department of Emergency Management also reported four fatalities between Saturday and Monday after severe flooding and reports of tornadoes.

In Ciudad Acuna, Mayor Evaristo Perez Rivera said 300 people were treated at local hospitals after the twister, and up to 200 homes had been completely destroyed in the city of 125,000 across from Del Rio, Texas.

Thirteen people were confirmed dead - 10 adults and four infants, including one that was ripped from its mother's arms.

Rescuers were looking for four members of a family who were believed missing.

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Robbins reported from Ciudad Acuna.

Tornado damage in Mexico:

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Mexico tornado 5/25
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Floodwaters rise in Houston; search goes on for 30 missing
A car lies destroyed in front of a house after a tornado struck May 25, 2015 in Ciudad Acuna, northern Mexico, leaving at least 13 dead people and flattening hundreds of homes in a deadly six-second blast of carnage. AFP PHOTO/RAUL LLAMAS (Photo credit should read RAUL LLAMAS/AFP/Getty Images)
People survey a destroyed car in Ciudad Acuna, Mexico on May 25, 2015. A tornado ripped into a town in northern Mexico on Monday, killing at least 13 people and flattening hundreds of homes in a deadly six-second blast of carnage. AFP PHOTO/RAUL LLAMAS (Photo credit should read RAUL LLAMAS/AFP/Getty Images)
People collect their belongings May 25, 2015 after a tornado ripped into Ciudad Acuna in northern Mexico, killing at least 13 people and flattening hundreds of homes in a deadly six-second blast of carnage. AFP PHOTO/RAUL LLAMAS (Photo credit should read RAUL LLAMAS/AFP/Getty Images)
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