(11:45AM – Thursday, February 13th, 2025) Thursday morning update on a two part storm system will impact the state, from Friday afternoon through Sunday morning. The FIRST PART will bring snow and mixed precipitation to Northern and Central Illinois from Friday afternoon through early Saturday morning, including the potential for accumulating snow. The SECOND PART will bring some wintry impacts to the state from Saturday morning through Sunday morning, including the potential for accumulating snow.
…PART ONE…
Timing…
•Friday Afternoon – Early Saturday morning, February 14-15th.
Location…
•Northern & Central Illinois.
Impacts…
•Snow accumulation ranging from a dusting to 1-3″ will be possible across all of Northern and portions of Central Illinois, with locally higher amounts possible near the IL/WI border. Some of this accumulation across portions of Central Illinois may be in the form of sleet/pellets.
•Freezing rain/ice accumulation of a glaze will be possible across portions of Central Illinois.
•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 will traverse Northern and portions of Central Illinois. Snow will be likely across Northern Illinois, with a mixture of precipitation across Central Illinois. Snowfall totals ranging from a dusting to 1-3″ will be possible across Northern and portions of Central Illinois, with locally higher amounts possible near the IL/WI border. Some sleet/pellet accumulation will be possible across portions of Central Illinois, as well as a glaze of freezing rain/ice accumulation.
…PART TWO…
Timing…
•Saturday Morning – Sunday morning, February 15-16th.
Location…
•Much Of Illinois.
Discussion…
•As the main developing storm system tracks through the region over the weekend, precipitation will traverse the state, with some snow and mixed precipitation will be likely across portions of the state from Saturday morning through Sunday morning. Wintry precipitation accumulations will be possible. With significant weather guidance disagreement and this timeframe being on the edge of our forecast window, any official forecast will not come until the next forecast cycle (tonight).
