(12:15PM - 3/22/20) Another sign that winter is hanging on from time to time...It continues to look like that a minor snow event will occur across Northern and Central Illinois, today into Monday...as a weak storm system moves through the region. With this update we have only had minor adjustments, based on real-time observations and guidance.
A weak storm system will be moving through the region, today into Monday. Model guidance has been in agreement on this event occurring, snowfall amounts and snowfall axis location.
Precipitation spread into West-Central and Southwest Illinois this morning, with a dusting to 1-3" of snow having already occurred across these areas. Precipitation will continue to spread across much of the state through the day and through tonight. Across Northern Illinois, all of this event is expected to be snow, with the transition zone of rain to snow expected to set up across Central Illinois. Precipitation will continue into very late tonight night or early Monday morning, before ending. Given the recent mild/warm temperatures and expected marginal temperatures during this event, snow will likely not efficiently accumulate. Thus, highest accumulation will be on colder surfaces (such as grass), with road accumulation far less. These temperature factors will also play a roll in final snowfall accumulation amounts as well.
Final snowfall totals upwards of a dusting to 1-3" are expected across Northern and Central Illinois.
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