I am hopeful it is better than it first sounds.

New Orleans is almost at sea level with a lake on top, canals all around, and needs sump pumps during the "good times". Much of Corpus Christi raises in elevation quickly from the coast. Given the terrain and how fast the Hurricane grew in strength, I can understand why they didn't want people to get stuck on the roads when the rain bands started coming in like Houston had happen with Rita.

From CORPUS CHRISTI (KIII NEWS) - "As of Thursday, the cities of Port Aransas, Aransas Pass, Rockport, Ingleside, Sinton, Taft, Portland and Gregory have issued mandatory evacuation orders due to the incoming Hurricane Harvey. There are also mandatory evacuations for San Patricio and Refugio counties. The City of Corpus Christi has issued a voluntary evacuation ... Additionally, Bee County, the City of Kingsville and Three Rivers are under voluntary evacuation, according to city officials."