First day of weather warning for snow tonight and Wednesday morning

First day of weather warning for snow tonight and Wednesday morning

First weather alert:

  • Rain/mix tonight transitions to all snow
  • Wet and heavy snowfall overnight through mid-morning Wednesday
  • The worst travel conditions will be Wednesday morning
  • Snow subsides mid to late morning and melts throughout the day

Tonight-Wednesday morning: The rain will move from the south this evening turning to snow overnight. The heaviest snowfall is expected between midnight and 8 a.m. Wednesday’s ride will be a snowy, muddy mess. Although morning temperatures will be near freezing, the heavy snowfall will overcome the melt, allowing snow to accumulate on raised surfaces and grassy areas. Roads will be covered in slush where the snow is lighter and where there is heavier snow it will cover the road for a period during the morning before becoming slush. Expect wet, heavy snow that’s great for the snowmen, but hard on the body when shoveling. 2-7″ is generally expected in the metro with 2-3″ in St. Charles County, 3-4″ in St. Louis, and the higher totals of 4-7″ will be just south/south- is in Jefferson County in Missouri and Monroe and St. Clair County in Illinois. Parts of southeastern Missouri could see 9″ and even isolated higher totals. Keep in mind that snow will also melt during the day, so accumulations will decrease throughout the day as temperatures stay at or above freezing.

Wednesday afternoon-evening: While sporadic light flurries are still possible throughout the day and evening, no further accumulations are expected. With the melting and snow removal crews, the roads should improve quickly later in the afternoon and evening. However, rural areas (and particularly in the south where heavier snowfall is expected) will have moderate impacts on persistent travel. Daytime high of 36°, a little windy with winds of 10 to 15 mph from the northwest, a few gusts of 20 to 25 mph.

Thursday morning: We’re dropping to a low of 27° so we’ll have to watch for melting refreeze for the Thursday morning ride.

7-day forecast

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