(10:00PM - 1/13/22) A winter storm is expected to move through the region Friday through Saturday. This winter storm is expected to produce a swath of accumulating snow across the region, including into the western half of the state.
A storm system will move from the Plains on Friday, through the Lower-Mississippi Valley on Saturday afternoon, and then into the Southeast on Sunday. This winter storm is expected to bring a swath of accumulating snow into the western half of the state, Friday afternoon through Saturday morning.
With this update no significant changes were needed, as the going forecast looks good based on current information. At this time there continues to be some disagreement within model guidance, which will be resolved in the next 18 to 24 hours leading up to the winter storm. Stay tuned for future updates.
Snow is expected to spread southeastward into Northwest and Western Illinois Friday afternoon, with a mix of rain/snow spreading into Southern Illinois Friday evening and Friday night. Snow is then expected across these areas from the aforementioned onset times, through Saturday early morning, before ending with time by late Saturday morning. Snow intensity will vary from light to moderate at times, with snowfall rates up to or in excess of 0.5" per hour at times.
-Snowfall totals upwards of 1-3" to 2-5" are expected across Northwest, West-Central and Southwestern Illinois, with a dusting elsewhere across the state.
-Travel impacts likely across Northwest, West-Central and Southwestern Illinois.
Below is the snowfall forecast for this winter storm.