<P> In Louisiana, Governor Edwin Edwards declared a state of emergency . About 1.25 million people evacuated from the central and southeast Louisiana, while approximately 60,000 others fled parishes in southwest Louisiana . A mandatory evacuation from Grand Isle was ordered by Mayor Andy Valence and the city council . In New Orleans, Mayor Sidney Barthelemy ordered the evacuation of about 200,000 residents in the low - lying areas of the city . Nine shelters were opened in the city, which were occupied by thousands of people . In response to computer simulations showing that storm surge from a tropical cyclone like Hurricane Andrew could over-top the levees, workers closed 111 floodgates . The Louis Armstrong New Orleans International Airport closed, with jumbo jets being flown to other airports . A total of 250 members of the Louisiana National Guard patrolled the streets during the storm . The Red Cross assisted with opening a shelter at the University of Southwest Louisiana's Cajundome in Lafayette, equipped to handle about 2,000 people . </P> <P> In Texas, about 250,000 people evacuated Orange and Jefferson counties . Galveston City Manager Doug Matthews advised residents to develop an evacuation plan in the event that the city chose to call for evacuations . The city later decided against ordering an evacuation . School was canceled on August 25 for Beaumont, Port Arthur, and other areas of central Jefferson County, while schools were closed in Dickinson, High Island, Hitchcock, La Marque, Santa Fe, and Texas City on August 26 . College of the Mainland, Galveston College, and Texas A&M University at Galveston were also closed . Emergency management crews in Corpus Christi began testing emergency generators and severe weather gear . The Comal County chapter of the Red Cross placed their disaster alert teams on standby and ready to respond if the hurricane threatened the Corpus Christi area . </P> <Table> Costliest U.S. Atlantic hurricanes Cost refers to total estimated property damage <Tr> <Th> Rank </Th> <Th> Hurricane </Th> <Th> Season </Th> <Th> Damage </Th> </Tr> <Tr> <Th> </Th> <Td> Harvey </Td> <Td> 2017 </Td> <Td> 7011198000000000000 ♠ $198 billion </Td> </Tr> <Tr> <Th> </Th> <Td> Katrina </Td> <Td> 2005 </Td> <Td> 7011108000000000000 ♠ $108 billion </Td> </Tr> <Tr> <Th> </Th> <Td> Sandy </Td> <Td> 2012 </Td> <Td> 7010714000000000000 ♠ $71.4 billion </Td> </Tr> <Tr> <Th> </Th> <Td> Ike </Td> <Td> 2008 </Td> <Td> 7010295200000000000 ♠ $29.5 billion </Td> </Tr> <Tr> <Th> 5 </Th> <Td> Andrew </Td> <Td> 1992 </Td> <Td> 7010265000000000000 ♠ $26.5 billion </Td> </Tr> <Tr> <Th> 6 </Th> <Td> Wilma </Td> <Td> 2005 </Td> <Td> 7010210070000000000 ♠ $21 billion </Td> </Tr> <Tr> <Th> 7 </Th> <Td> Ivan </Td> <Td> </Td> <Td> 7010188200000000000 ♠ $18.8 billion </Td> </Tr> <Tr> <Th> 8 </Th> <Td> Irene </Td> <Td> 2011 </Td> <Td> 7010156000000000000 ♠ $15.6 billion </Td> </Tr> <Tr> <Th> 9 </Th> <Td> Charley </Td> <Td> </Td> <Td> 7010151130000000000 ♠ $15.1 billion </Td> </Tr> <Tr> <Th> 10 </Th> <Td> Rita </Td> <Td> 2005 </Td> <Td> 7010120370000000000 ♠ $12 billion </Td> </Tr> <Tr> <Th_colspan="6"> Source: National Hurricane Center </Th> </Tr> </Table> <Tr> <Th> Rank </Th> <Th> Hurricane </Th> <Th> Season </Th> <Th> Damage </Th> </Tr>

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