CORPUS CHRISTI, Texas (AP) — The Latest on Tropical Storm Harvey (all times local):
8:15 a.m.
The U.S. Coast Guard says it’s received more than 300 requests for urban search and rescue in the Houston area.
The Coast Guard has five helicopters working the emergency calls and is asking for additional helicopters from New Orleans to help.
Officials are advising people in dire straits to get to the roofs of their homes and mark them somehow to be seen from the air. They’re suggesting people wave sheets or towels.
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7:45 a.m.
Flooding in some parts of the county that includes the city of Houston is so bad that residents are being urged to seek refuge on their roofs.
Harris County Flood Control District official Jeff Lindner says people inundated by rising waters shouldn’t crawl into attics of their homes but should get on top of them.
He says rainfall of more than 4 inches per hour has sent water higher than in recent Houston floods side and are exceeding levels seen in Tropical Storm Allison in June 2001.
Lindner says areas south of the city appear hard-hit and some flooding is reported in downtown Houston and in the Texas Medical Center, which was devastated in Allison.
He calls Harvey “a different animal” from Allison and a “historic situation.”
He says he’s most amazed that he’s getting reports “of water into second-story of apartments and homes.”  Considering Houston’s flat terrain, “it’s very rare to get that depth of water.”
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6:20 a.m.
Authorities say rescue attempts continue in Houston for those stranded inside flooded homes and submerged vehicles in the wake of Harvey.
The Houston Chronicle reports that hundreds of calls have been fielded for water rescues as of early Sunday, including Houston police officials who evacuated two apartment complexes and rescued more than 50 children.
Meanwhile, Harris County Sheriff Ed Gonzalez and Houston Mayor Sylvester Turner on Sunday continued urging residents via Twitter to “shelter in place” and stay off rain-swollen roadways.
Gonzalez actively used Twitter overnight to field assistance for those trapped inside water-soaked homes, attics and vehicles. Those appealing for assistance or being steered to help via Gonzalez’s Twitter feed included a person suffering “cardiac-arrest,” and a woman who posted: “I have 2 children with me and the water is swallowing us up. Please send help.”
Gonzalez at one point appealed for calm and patience, saying officials were “trying to make it to everyone as best we can.”
Turner’s official Twitter account said “911 services at capacity. If u can shelter in place do so, a few inches in your home is not imminent danger. Only call if in imminent danger.”
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4:03 a.m.
The National Hurricane Center says Harvey continues to cause “catastrophic flooding in southeastern Texas.”
The hurricane center says in its 4 a.m. Sunday update that the tropical storm has maximum sustained winds of 45 mph (72.42 kph) and remains stationary about 45 miles (72.42 kilometers) northwest of Victoria, Texas.
A storm surge warning and a tropical storm warning also are both in effect for Port O’Connor to Sargent. The hurricane center says a storm surge warning means there is a danger of life-threatening inundation from rising water moving inland from the coastline.
The center says Harvey is likely to weaken to a tropical depression later Sunday. Harvey made landfall Friday night as a Category 4 hurricane.
Meanwhile, the National Weather Service says a Flash Flood Emergency over west and central Harris County, where Houston is located, as well as for eastern Fort Bend and northern Brazoria counties remains in effect until 6:15 a.m. Sunday, calling it a “Particularly Dangerous Situation.”
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2:11 a.m.
Jersey Village, Texas, officials are recommending that people who live along the White Oak Bayou, about 17 miles northwest of Houston, consider whether they need to evacuate their homes.
Jersey Village City Manager Austin Bleess says the city issued a notice to residents about 1:30 a.m. saying the bayou looked like it would be out of its banks before long. He says city officials worried that streets may soon become impassable and wanted those residents to have time to make arrangements.
“Certainly if people can stay in their homes, they can do that,” Bleess said. “It’s quite possible that the streets could get impassable so we wanted to get that recommendation out.”
Bleess says the city is in the process of opening a storm shelter at the Champion Forest Baptist Church, Jersey Village chapter.
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1:20 a.m.
The National Hurricane Center says Harvey continues to weaken at a slow pace as it produces torrential rains across parts of Southeast Texas.
In its early Sunday update, the hurricane center said the tropical storm has maximum sustained winds of 45 mph (72.42 kph) and it is practically stationary about 45 miles (72.42 kilometers) northwest of Victoria, Texas.
The airport in Austin, about 165 miles (265.53 kilometers) west of Houston, reported sustained winds of 38 mph.
The center says Harvey is likely to weaken to a tropical depression later Sunday. Harvey made landfall Friday night as a Category 4 hurricane.
Meanwhile, the National Weather Service extended a Flash Flood Emergency over west and central Harris County, where Houston is located, as well as for eastern Fort Bend and northern Brazoria counties until 6:15 a.m. Sunday, calling it a “Particularly Dangerous Situation.”
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12:30 a.m.
At least two people have died as Tropical Storm Harvey continues to dump rain on Southeast Texas.
The Harris County medical examiner’s office confirmed the death of one person late Saturday in Harris County, but the office did not identify the cause of death.
Gary Norman, a spokesman for the Houston emergency operations center, says the woman appeared to have gotten out of her vehicle in high water. She was found by neighbors about 30 yards away from the vehicle. Norman says she was pronounced dead at the scene by a doctor who was in the area.
Earlier Saturday, Aransas County Judge C.H. “Burt” Mills Jr. said the storm left one person dead in the county.
Harvey came ashore Friday night as a Category 4 hurricane, but has since been downgraded to a tropical storm.