...Major Winter Storm Today and Tonight.. .A major winter storm will impact much of central and southern Iowa today and tonight, with some snow possibly lingering through mid-day Tuesday. Snow will lift into far southern Iowa early this morning and then will expand north into central Iowa during the day. Very heavy snowfall rates near 2 inches per hour are likely this afternoon and evening, leading to heavy accumulations over a short period of time. Increasing northeast winds gusting over 30 mph will cause blowing and drifting snow. Some uncertainty of snowfall amounts remains on the north edge of the snow band, where much less snow totals are possible over a short distance. ...WINTER STORM WARNING NOW IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 AM CST TUESDAY... * WHAT...Heavy snow and blowing snow expected. Total snow amounts of 6 to 10 inches. Winds gusting as high as 35 mph. * WHERE...Central Iowa from Marshalltown through Tama. * WHEN...From 2 PM this afternoon to 6 AM CST Tuesday. * IMPACTS...Travel could be very difficult over the entire warning to impossible. Blowing snow will significantly reduce visibility and cause moderate drifting. Near blizzard, whiteout conditions are possible. Hazardous conditions will significantly impact the Monday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.