Winter storm watch issued, snow Wednesday evening-Thursday afternoon | News

Measurable snow likely from Wednesday evening to Thursday afternoon. A winter storm watch has been issued for parts of the area southeast of St. Louis. And this watch can be expanded, stay tuned for updates. This could have a significant impact on the Thursday morning commute.

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According to current forecasts, snow is moving south of St. Louis Wednesday night and in the subway late at night and during the night. There will likely be snow during the morning working hours until noon, then the snow will head east and decrease on Thursday afternoon.

With the current trace of the low-pressure system that will bring snow, the best chance of higher accumulation starts around the Saint-Louis metro and rises as you travel south and east. Lower accumulation is expected in the northwest. See the map below for the current snow potential.

Any changes in the trajectory of the storm can cause big changes on this accumulation map. If the track moves further south or east, we would be more likely to see the snow decrease and totals decrease around the Saint-Louis metro.

If the lane moves further north or west, the risk of snow increases and the higher totals return to the metropolitan area.

A second variable is the temperature on Thursday. We will all start the day in the 20's and snow will immediately stick to untreated surfaces. On Thursday afternoon, some areas could see temperatures climb above 0 ° C, which would result in more slush and melting. Rain may mingle with snow in places, although the snow is clearer in the afternoon.

While the snow ends Thursday night, watch for the freeze as temperatures drop below freezing in the evening.

There is still time for the trajectory of the storm to change and uncertainty prevails on Thursday. Just an alert, we could see more snow accumulate and the potential for significant impact on your trip on Thursday morning. We encourage you to stay tuned as we adjust the forecasts.