A spring storm that spawned a tornado killing nine people along the Texas-Mexico border today began dumping rain over Warren County at midmorning, and a spokesman for the National Weather Service in Jackson said it was expected to stay around much of the day.

&#8220I’m kind of expecting this line to hang up over the area,” Chad Encremont said. &#8220There could be a chance of getting a couple of inches of rain as the line of storms hangs up, but I’m not expecting anything severe. When it comes through, it’s probably going to be done for the day.”

Wind gusts were between 40 and 45 miles per hour as the storm moved northeast into Mississippi this morning. Gwen Coleman, director of the Warren County Emergency Management Agency, said she was expecting a late-morning briefing from the National Weather Service.

In Eagle Pass, Texas, about 150 miles southwest of San Antonio, six people died. Four of them were apparently in one mobile home when the tornado hit Tuesday night, Eagle Pass Mayor Chad Foster said.

The tornado destroyed an elementary school, more than 20 nearby homes and the Eagle Pass municipal sewer treatment plant. Nobody was in the school when the tornado hit, Foster said.

&#8220I’m out here on-site and I’m looking at what used to be an elementary school,” Foster said by phone early Wednesday morning. &#8220Six mobile homes are still missing.”

A local hospital received 74 injured patients, including four in critical condition.

Across the border in Piedras Negras, Mexico, at least three people were killed and at least 40 were injured in the severe weather, authorities said. The storm ripped roofs from homes, toppled power poles and damaged dozens of cars and homes, said Oscar Murillo, the city’s civil protection director.

In North Texas, streets flooded and roofs peeled off homes as storms began moving through Tuesday afternoon, followed by another line of severe storms about six hours later. Tornado sirens rang in several counties, and television footage showed drivers and residents being rescued from flooded cars and suburban neighborhoods.

American Airlines had about 200 flights canceled because of weather in Dallas, spokesman Billy Sanez said. The airline also diverted about 80 flights bound for Dallas-Fort Worth International Airport to other airports, including San Antonio.

In Denton County, heavy winds blew the metal roof off a restaurant and damaged several mobile homes and a commercial building under construction, said Roland Asebedo, assistant chief for Denton County’s Emergency Services. No injuries were reported.

The storm system dumped heavy snow, rain and hail before roaring out of the West. Western and central Iowa received up to 3 1/2 inches of rain, and in parts of Nebraska there were reports of as much as 5 inches.

In Colorado, six buses carrying at least 60 children were stranded after being unable to travel in the storm that dropped more than a foot of snow in about two hours, said Rob Finley, assistant fire marshall for El Paso County.

Children in those buses were all accounted for late Tuesday and had been rescued and taken to shelters opened in the county, about 80 miles south of Denver.

A tornado damaged several buildings near Wild Horse about 110 miles southeast of Denver, but no injuries were reported, the Cheyenne County Sheriff’s Department said.