(11:45PM – Friday, February 14th, 2025) Friday night update on a TWO PART storm system will impact continue to impact the state, through Sunday morning. PART 1 has brought snow to Northern Illinois and mixed precipitation to the state Friday afternoon/night, with this activity to partially linger into Saturday morning for some areas. PART 2 will bring more wintry impacts to the state from Saturday morning through Sunday morning, including the potential for accumulating snow.
…PART ONE…
Timing…
•Friday Night – Saturday morning, February 14-15th.
Location…
•Northern & Central Illinois.
Impacts…
•Additional snow accumulation ranging from a trace to a dusting (<1″) will be possible across portions of Northern and Central Illinois. This includes sleet/pellet accumulation, with Central Illinois being most favored for this.
•Freezing rain/ice accumulation of a glaze will be likely across the heart of the state.
•Snow/sleet/pellet/ice accumulation may lead to travel issues for some areas.
Discussion…
•As a lead wave moves through the area and warm air advection occurs, an area of precipitation has traversed Northern and portions of Central Illinois from Friday afternoon and now into Friday night. A period of snowfall occurred across Northern Illinois, where snowfall accumulation of dusting to 1-3″ of snowfall was common. For Central Illinois, mixed precipitation has been ongoing, with minor snow, sleet, and ice accumulation having occurred. Across Northern Illinois, a bit of isolated mixed precipitation may be possible into Saturday morning, with minor accumulations possible for areas that see it. Across Central Illinois, mixed precipitation will continue on a more widespread scale into Saturday morning, with additional minor wintry accumulations likely.
…PART TWO…
Timing…
•Saturday Morning – Sunday Morning, February 15-16th.
Location…
•Much Of Illinois.
Impacts…
•Widespread snowfall accumulation of a trace to 1″ will be likely across much of the state, with locally higher amounts possible across portions of Northern Illinois. Across portions of Central and Southern Illinois, 1-3″ of snow will be likely, with locally higher amounts possible.
•Freezing rain/ice accumulation of a glaze will be likely across the heart of the state.
•Snow/sleet/pellet/ice accumulation may lead to travel issues for some areas.
Discussion…
•Disorganized area of snow showers will be possible across Northern Illinois during this period. Across Portions of Central and Southern Illinois, as the storm system organizes and strengthens as it passes southeast of the state late Saturday into early Sunday, an area of snow will develop and traverse the area. Some sleet/pellets may be possible as well. The best chance for freezing drizzle will be Saturday morning. There will also be the brief chance for a bit of freezing rain as a precipitation type transition occurs during the second half of the day.
