most industrial buildings, rendering them inoperable, the "total destruction" of all wood-framed low-rise apartment buildings, all windows blowing out in high-rise office buildings, and the creation of a huge debris field of trees, telephone poles, cars, and collapsed buildings. Lack of clean water was predicted to "make human suffering incredible by modern standards." It was also predicted that the standing water caused by the storm surge would render most of the city uninhabitable for weeks and that the destruction of oil and petrochemical refineries in the surrounding area would spill waste into the floodwaters. The resulting mess would coat every surface, converting the city into a toxic marsh until water could be drained. Some experts said that it could take six months or longer to pump all the water out of the city. Evacuation order On Saturday night, Max Mayfield, director of the National Hurricane Center, did something he had done only once before. He called the governors of Alabama, Louisiana, and Mississippi to warn them of the severity of the coming storm. He issued a special warning to Mayor Ray Nagin, telling him that some levees in the greater New Orleans area could be overtopped. Later, Mr. Mayfield would tell Brian Williams with NBC Nightly News that he went to bed that night believing he had done what he could. On Sunday, he made a video call to U.S. President George W. Bush at his farm in Crawford, Texas about the severity of the storm. Many New Orleans residents took precautions to secure their homes and prepare for possible evacuation on Friday the 26th and Saturday the 27th. On August 27 the state of Louisiana was declared an emergency area by the Federal Government, and by mid-morning of that day, many local gas stations which were not yet out of gas had long lines. Nagin first called for a voluntary evacuation of the city at 5:00 p.m. on August 27 and subsequently ordered a citywide mandatory evacuation at 9:30 a.m. on August 28, the first such order in the city's history. In a live news conference, Mayor Nagin predicted that "the storm surge most likely will topple our levee system", and warned that oil production in the Gulf of Mexico would be shut down. Many neighboring areas and parishes also called for evacuations. By mid-afternoon, officials in Plaquemines, St. Bernard, St. Charles, Lafourche, Terrebonne, Jefferson, St. Tammany, and Washington