DALLAS (AP) - Some of the two million people seeking escape from Hurricane Gustav can run but they can"t hide.

The same storm they fled threatens to dump up to dump up to 20 inches of rain on parts of Texas and Louisiana, possibly keeping many evacuees from going home as quickly as they would like.

They may have to extend their stays in hotels and overcrowded shelters.

At a shelter in Shreveport, La., evacuees packed together for three days were starting to fight and question their decision to leave home in the first place.

The rusted, vacant Sam's Warehouse was converted into an evacuation center had a capacity of 2,600 people, but the crowd inside swelled to nearly 3,000 as stragglers arrived overnight.

National Weather Service meteorologist Charles Roeseler says, it's too early to tell exactly how much rain will fall in places like Shreveport and Tyler, but, quote "all look to be under the gun."

Some Louisiana residents said they were moved to action by authorities who urged nearly everyone to leave the storm's path.

(Copyright 2008 by The Associated Press. All Rights Reserved.)