DALLAS -- The sun is breaking through in North Texas, but the ice remains on roads and highways in the area.

Dallas-Fort Worth International Airport officials say 100 flights have been canceled today, but they expect operations to be back to normal around midday.

Meanwhile, the ice threat is moving south and east into East and Central Texas. Winter weather and ice storm warnings extend from Del Rio to Austin and San Antonio to near Lufkin. The Houston area is under a winter storm watch, and flood warnings extend from Houston to Shreveport, Louisiana.

The threat of winter weather prompted cancellation of the Martin Luther King Junior Day activities planned for Austin.

At least two people have died in traffic accidents on state roadways since the system entered the state on Friday.