Light snow and bitter cold may challenge St. Louis morning commuters

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St. Louis Weather:

ST. LOUIS, Mo. – The Missouri Department of Transportation says that light snow is expected late tonight and into tomorrow morning could be an issue for commuters. The bitter cold could create slick conditions, especially on bridges and overpasses.

This clipper may produce patchy light snow. It’s never been forecast to be anything more than that. However, the timing of any light snow falling during the morning rush hour Thursday has our attention along with the fact that this light snow will fall into some very cold air on the cold ground with increasing winds.

We all know very well around here that it’s not always the amount of snow that falls but when it falls that can be the difference between a nothing system and one that has bigger impacts.

The first flakes of snow will be possible with flurries developing just before midnight and a steady ramp up through the night, especially along and just south of the Missouri River.

The final impact of dry air is the big unknown at this point and now it’s mostly just a waiting game. It may end up being an extremely narrow band of more focused snow just south of I-70 along the Missouri River to just west/southwest of St. Louis. This area may get 2-3 inches of snow.

There will also be a slightly enhanced area just southeast of the viewing area over southern Illinois and far southeast Missouri.

The northern edge of the snowfield will be very sharp. A mile or two may make the difference between a nice coating and nothing at all. So it is along I-70 where the greatest potential for a bust will take place.

Those are not impressive numbers at all but when you take into consideration, time of day, cold temperatures, increasing winds, and cold ground it leads to the potential of a minor to moderate impact event at least for a few hours for areas south of I-70.

As for impacts. This may be a minor accumulation event, but the timing of the light snow, very cold temperatures, increasing winds, and cold ground conditions will allow snow to stick immediately when it starts to fall. This all adds up to a minor to moderate impact winter event for areas just south of the Missouri River and I-64.

If you’re involved in a minor crash or slide off the road, the safest place to be is buckled in your car as you wait for help. Don’t forget to pack an emergency kit with items like a phone charger, blanket, bottled water, nonperishable foods, and a flashlight.

Check the traffic map for the latest road conditions, accidents, and backups along your route. Download the FOX 2 News App for the latest updates and alerts while you travel.

An earlier version of the story reported an incorrect number of people trapped. This story has since been updated to reflect the correction information.

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