Winter Storm Warning remains in effect until midnight CST tonight... * timing... light snow will persist through this evening. Periods of moderate to heavy snow are possible at times early this morning and again this afternoon. * Snow accumulations... an additional 3 to 6 inches of snow is expected today. This will result in a storm total of 5 to 9 inches. * Visibilities... look for reduced visibilities during the heavier snowfall... likely below a mile at times. * Impacts... plan on difficult driving conditions. Precautionary/preparedness actions... A Winter Storm Warning for heavy snow means severe winter weather conditions are expected or occurring. Significant amounts of snow are forecast that will make travel dangerous. Only travel in an emergency. If you must travel... keep an extra flashlight... food... and water in your vehicle in case of an emergency.