(8:30PM - 1/27/20) A weakening storm system moving through the region will bring the chance for wintry precipitation to portions of the state, Tuesday night through Wednesday night.
A storm system is expected to eject out of the Rockies, and move through the Southern Plains and Southern Mississippi Valley Tuesday and Wednesday. This storm system will be in a weakening trend with time, but will still bring a period of light precipitation to the state Tuesday night through Wednesday night. An area of precipitation will first enter Southern Illinois Tuesday night, in the form of a mix. Snow will then spread into Western and Southwest Illinois later Tuesday night and early Wednesday morning. Snow will then be possible from Wednesday morning through Wednesday evening, before ending from west to east. Minor snowfall accumulation of a dusting to 1.5" will be likely across portions of Central and Southern Illinois.
Below is the TAM snowfall forecast for this event.
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