Five people have died in weather-related accidents in Texas as a wintry storm system caused more than 30,000 outages and stranded travelers to start the Thanksgiving holiday week.

The National Weather Service issued a winter weather advisory until midday Monday for the Dallas-Fort Worth area, downgrading a winter storm warning.

The Texas Department of Public Safety says two people died in separate accidents Saturday night on snow-covered roads near Amarillo and Dumas. Three people were killed in a multivehicle wreck late Friday near Vega.

American Airlines and American Eagle canceled nearly 300 flights Monday, mainly at Dallas-Fort Worth International Airport.

Electric utility Oncor (ON'-kor) reported nearly 25,000 customers without power Monday in north and west Texas. AEP Texas had about 5,400 outages in Marathon, Fort Davis, Marfa and Valentine.