Residents from Bayou Parc at Oak Forest carry their belongings while evacuating the apartment complex during the Tropical Storm Harvey, Sunday, Aug. 27, 2017, in Houston. (AP Photo)
Houston: Massive flooding unleashed by deadly monster storm Harvey left Houston - the fourth-largest city in the United States - increasingly isolated Sunday as its airports and highways shut down and residents were rescued from their inundated homes by boat.
The city's two main airports suspended all commercial flights and two hospitals were forced to evacuate patients. A local television station also was knocked off the air.
At least three people have been killed so far, with reports of other fatalities still unconfirmed. As night fell, dramatic rescues - sometimes by volunteers with their own boats - were still taking place.
The National Hurricane Center called the flooding "unprecedented" and said the storm, which crashed ashore late Friday as a huge Category 4 hurricane, would move into the Gulf before doubling back midweek, bringing even more rain.
President Donald Trump, who had said he did not want to disrupt emergency efforts with a visit, is planning to head to the disaster zone on Tuesday, the White House announced.
Rising waters from Harvey inundated roads throughout the Houston area, affecting every major freeway and hamstringing efforts to move people to safety.
"It's crazy to see the roads you're driving on every day just completely under water," Houston resident John Travis told AFP.
Overwhelmed emergency services warned residents to head for high ground or climb onto rooftops - not into attics - so they could be seen by rescue helicopters. More than 2,000 rescues had been made so far.