* WHAT...Dangerously cold wind chills as low as 10 to 20 degrees below zero expected. * WHERE...Portions of northwest and west central Arkansas and east central, northeast, and southeast Oklahoma. * WHEN...Until noon CST Monday. * IMPACTS...The dangerously cold wind chills will result in hypothermia if precautions are not taken.

* WHAT...Heavy snow and sleet expected from late Saturday afternoon through Sunday afternoon. North of Interstate 40, mainly snow will occur, with additional accumulations between 6 and 10 inches, locally up to 15 inches. Blowing and drifting snow may occur. South of Interstate 40, a mixture of snow and sleet will occur, with additional accumulation of 2 to 8 inches. Freezing rain of up to and additional 0.20 inches may occur across far southeast Oklahoma. Intense snow and sleet rates will greatly reduce visibility and rapidly worsen travel conditions from late afternoon through Saturday night. * WHERE...Portions of northwest and west central Arkansas and east central, northeast, and southeast Oklahoma. * WHEN...Until 3 PM CST Sunday. * IMPACTS...Dangerous to near impossible travel conditions are expected areawide, with impacts likely to continue into next week given the forecasted snow and sleet amounts. Localized power outages may occur. Brutally cold temperatures will prevail through the weekend and into early next week. Warming shelters should be considered.