The weather front moving through the St. Louis region could impede holiday travelers Saturday.

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ST. LOUIS (KSDK) – As people prepare to hit the road for the Christmas holiday, rain, ice and snow will cause troublesome road conditions across Missouri and Illinois.

The first alert weather team believes the metro St. Louis area will see mostly rain, while areas north and west will see some light glazing of ice on elevated surfaces.

Get the latest on the weekend forecast with our interactive radar.

Farther north and west from Quincy back to Columbia to parts of the Ozarks, more significant icing is expected. Most of the snow will fall from central Kansas to northwest Missouri into Iowa this evening and overnight. Travel going farther north and west into Iowa and western Missouri will be more difficult later Saturday into early Sunday morning.

RELATED: Storms create uncertainty for Illinois travelers

Heavy rain across southeast Missouri and southern Illinois will at the very least fill small creeks and streams and cause a great deal of standing water. Flash flood warnings are in effect for some areas Saturday morning. Turn around don't drown when water covers the road.

The Missouri Department of Transportation advises drivers to use extreme caution this weekend, especially if traveling on Interstate 70. MoDOT also urges drivers to consider waiting for the storm to pass Saturday and Saturday night to avoid hazardous weather conditions.

Check the traffic conditions on our traffic page.

Even if you're planning to travel elsewhere this weekend though, most of the country will also be dealing with weather conditions, especially in the East where the weather will be moving toward.

RELATED: Weather this weekend? Wet, white and wild

Freezing rain and up to 6 inches of snow is expected in the northern Plains, torrential rains in the Appalachian region and thunderstorms with possible tornadoes is expected in the South.

Associated Press contributed to this report.

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