Winter weather advisory in effect during Mardi Gras weekend

If you have plans for Mardi Gras or even to travel out of town, make sure to plan extra time around your trip for possible slick roads, especially by late Saturday into early Sunday morning.

ST. LOUIS - Weekend travel in and outside of St. Louis could be slow or even hazardous with our next winter system approaching.

If you have plans for Mardi Gras or even to travel out of town, make sure to plan extra time around your trip for possible slick roads, especially by tonight into early Sunday morning.

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Warm air aloft in combination with colder air moving in at the surface will allow mixed precipitation to fall across much of the region Saturday into the overnight hours.

Patchy freezing drizzle has been reported in central Missouri Saturday morning, and is possible into the afternoon. However, most areas are just cold with cloudy skies until early evening.

Temperatures are expected to be near or below freezing through the day, and fall into the low 20s overnight.

Precipitation will pick up in intensity by evening, falling as freezing rain. Even if roads are treated, light rain could wash away some of the salt, making travel more difficult as Saturday night wears on.

Late Saturday night, expect a transition from freezing rain to sleet, and possibly some snow after midnight.

Light snow is possible north of I-70 early Sunday before tapering off around the lunch hour.

The best chance for snow accumulation will be north and west of St. Louis, with the metro area getting under an inch of snow.

1-2" of snowfall is possible for our far northern counties. St. Louis and the Metro East should prepare for about 1/2" of snow, some sleet, and a light glaze or few hundredths of ice accumulation.

Farther south, a tenth to 2 tenths of an inch of ice is expected, with rain more likely just outside of the 5 On Your Side viewing area.

By no means will this be a major winter storm, but it could have impacts through Sunday if roads aren't treated and many drivers take to the roads.

Stay with 5 On Your Side Weather for the latest on travel impacts and any changes in the forecast as there could be some fine tuning with precipitation types and who sees the worst of the storm.