Snowy St. Patrick's Day from St. Louis to Cincinnati

By , Senior Meteorologist
March 17, 2013; 3:39 AM ET
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Winter is not giving up without a fight from St. Louis to Cincinnati with a snowy St. Patrick's Day shaping up for Sunday.

Colder air has erased the 73-degree warmth that gave St. Louis a taste of early May on Friday and is knocking on the doorstep of Cincinnati.

With that cold air in place, the stage will be set for snow to spread from the mid-Mississippi Valley to the Ohio Valley late tonight through Sunday, while a chilly rain falls to the south.

The snow, mixed with rain in the beginning, should commence along the I-70 corridor in the mid-Mississippi Valley late tonight. In addition to St. Louis, this includes the Missouri cities of Columbia and Jefferson City.

RELATED: Winter Weather Center
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After starting St. Patrick's Day in these communities, the snow will expand eastward to southern Ohio, including Cincinnati, on Sunday with the heaviest snow falling in the afternoon. meteorologists expect a general 1 to 2 inches of snow to accumulate through Sunday, but are concerned for locally higher amounts.

Even without the locally higher totals, the snow through Sunday will be enough to cause problems and headaches for travelers.

Motorists should prepare for roads, including Interstates 44, 55, 64 and 70, to become slippery for a time, while airline passengers may face flight delays.

Sunday's travel troubles will come even when the strong March sun typically hinders snow from covering roads. However, that only refers to lightly falling snow; heavy snow can overcome the sun's strength.

After darkness falls on St. Patrick's Day, the snow will focus on northern Virginia and the Mason-Dixon line Sunday night--marking the beginning of the next Northeast snowstorm.

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