...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations between 8 and 13 inches. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Iowa. * WHEN...Until 6 AM CST Sunday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact post-Thanksgiving travel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. &&