ST. LOUIS, MO (KTVI)- St. Louis is gearing up for a significant winter storm Thursday. The National Weather Service has issued a Winter Storm Watch for the region from late Wednesday night through Thursday evening. The storm is expected to bring a mix of snow, sleet, and freezing rain.
On Tuesday afternoon, the storm system was still offshore in the Pacific Ocean. The forecast is for it to drop south into the Four Corners region and then move into the Plains Wednesday afternoon. That track would take it through Missouri and Illinois during the day on Thursday.
Several inches of snow are likely to fall across northern Missouri and central Illinois, with that precipitation starting in the early morning hours of Thursday. South of I-70 in both states, the precipitation should change over to sleet and freezing rain, leading to ice accumulations. That is a concern for drivers as it doesn’t take much of an icy build up to lead to dangerous driving conditions.
The wintry mix tapers off Thursday evening as freezing drizzle.
While the forecast will change as the storm approaches, the early forecast calls for more snow the farther north you are, with 2-5” or more possible in places like Bowling Green, MO and White Hall, IL. South of there, between I-70 and I-44 in Missouri and I-70 and I-64 in Illinois, 1-3” of snow is likely along with up to two tenths of an inch of ice. Little snow accumulation for towns south of I-44 and I-64, but about two tenths of an inch of ice can be expected. Some southern counties may even see pure rain before the storm is done.