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  • Images from Hurricane Katrina
  • Images from Hurricane Katrina
  • Images from Hurricane Katrina
  • Images from Hurricane Katrina
  • Katrina Memorial in New Orleans
    Katrina Memorial on Canal Street
  • Images from Hurricane Katrina
  • Images from Hurricane Katrina
  • Katrina turned the river bank into a boat graveyard.
  • NEW ORLEANS, LA - AUGUST 24: The Mercedes-Benz Superdome stands (Top R) downtown near the abandoned Charity Hospital (Lower L), which was flooded during Hurricane Katrina and never re-opened, on August 24, 2015 in New Orleans, Louisiana. The Superdome site was used as a 'shelter of last resort' during Hurricane Katrina. The tenth anniversary of Hurricane Katrina, which killed at least 1836 and is considered the costliest natural disaster in U.S. history, is August 29. (Photo by Mario Tama/Getty Images)
  • New Orleans, UNITED STATES: US President George W. Bush flies over the Superdome in Marine One 02 September 2005 during a tour of the flood submerged southern port city of New Orleans following Hurricane Katrina. Bush, on a day-long visit to the battered states of Alabama, Mississippi and the flooded and lawless city of New Orleans, Louisiana, said the region seemed to have been "obliterated by the worst kind of weapon you can imagine." AFP PHOTO/Jim WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
  • NEW ORLEANS - AUGUST 29: A New Orleans Police car drives down Canal Street during Hurricane Katrina early in the morning August 29, 2005 in New Orleans, Louisiana. Katrina made landfall this morning as a Category 4 strom with sustained winds in excess of 135 mph near Empire, Louisiana. (Photo by Chris Graythen/Getty Images)
  • Images from Hurricane Katrina
  • NEW ORLEANS - SEPTEMBER 01: People await aid and treatment outside the New Orleans Convention Center September 1, 2005 in New Orleans, Louisiana. Rescue efforts continue as officials in New Orleans fear the death toll from Hurricane Katrina could be in the thousands. (Photo by Mario Tama/Getty Images)
NEW ORLEANS — Twelve years ago today, Hurricane Katrina struck the Gulf Coast, and Houston welcomed evacuees with open arms. As New Orleans remembers the storm that forever changed the city, Tropical Storm Harvey is still wreaking havoc on Houston and Southeast Texas, while also bringing heavy rainfall to South Louisiana. The annual wreath-laying ceremony and prayer service at the Katrina Memorial in Mid-City has been postponed. The city has not announced a new date. It was supposed to start at 8:29 a.m. The Katrina second line and march that was supposed to happen this morning also has been postponed. It has been rescheduled for Sunday, Sept. 3 at 10 a.m. It will start at the corner of Jourdan Avenue and Galvez Street. On this day in 2005, Katrina made landfall as a Category 3 storm between Grand Isle and the mouth of the Mississippi River. Roughly 80 percent of New Orleans flooded, mainly because of levee system failures. Orleans and St. Bernard parishes were hit the hardest. More than 1,800 people died in Louisiana and Mississippi, and more than 1,500 of those deaths were in Louisiana. So far, Harvey has claimed the lives of at least nine people in Texas, though Fox News has that number at 14. There are flash flood watches — and some warnings — in effect for the New Orleans metro area through Thursday.