December 2024 Storm Chasing Recap

Models trended significantly downward on expected snow totals for this event in the 24 hours prior to it. I left at 3AM and immediately observed signs of frost icing on the highways and bridges in the area (unrelated to the snow, which was yet to statrt), noting a few minor slick spots on bridges near downtown just before sunrise. I then moved up to Alton to await the incoming snow showers, which looked to mainly stay on the north and east sides of the metro area. As these arrived and persisted through noon, some bridges and side roads were briefly covered, but the sunlight filtering through and diligent road treatment was preventing any problem areas from developing. I was done with the event at midday.