PALESTINE, TEX., NOV. 16 -- Tornadoes and heavy rain slowed cleanup today as National Guardsmen helped shattered towns recover from a swarm of twisters that killed 11 people and injured at least 208 in Texas and Louisiana on Sunday.

An oil-field worker was killed today in Bay City, Tex., when high winds toppled the drilling rig on which he was working. No new injuries were reported in Louisiana.

"What is left of homes is nothing more than the concrete foundations," Caldwell, Tex., Mayor William Broaddus said of the half-mile-wide path of destruction there. "The metal and wood from {the siding on} barns . . .is up in the trees for miles."

Palestine, a town of about 16,000, suffered some of the heaviest damage, estimated at $5 million to $12 million. Mayor Jack Selden said that more than 35 families have been left homeless and 86 businesses damaged. "A number of them are severely damaged. I'm not sure they're going to recover," he said.

The twisters began at midday Sunday and were reported over a 200-mile area from east-central Texas just west of Austin to Tyler in the state's northeast corner and into Louisiana. Two more tornadoes touched down this morning in the state.

As much as a foot of rain fell overnight in parts of Louisiana, closing some highways, officials said.

Louisiana Gov. Edwin Edwards declared a state of emergency in eight parishes. Officials said a storm that may have been a tornado hit Tallulah early today, causing scattered damage and flooding streets in some areas.

The twisters killed 10 people and injured at least 163 in Texas. In Louisiana, a man died and at least 45 people were hurt, officials said.

Some people spent the night by bonfires under intermittent rain to protect their property from looters. "You just can't visualize what it was and what it is now," said G.B. Kellebrew Sr. of Palestine, who stood guard where his daughter's home once stood.

The same weather system was blamed for the West's first major snowstorm of the season, which blew through Colorado into Nebraska Sunday, dumping up to 22 inches of snow, slowing airport operations and closing some roads with near-blizzard conditions.

The rash of tornadoes was unusual so late in the year. According to the Texas Almanac, of the 4,000 tornadoes reported in the state for a 35-year period ending in 1984, just over 100 occurred in November.