As expected snow is picking up across central Indiana, and will remain steady through this evening. Quick accumulations are likely within the initial burst that’s moving through the Indy metro. Afternoon road conditions will vary from wet to possibly slushy in heavier bursts. Traveling after sunset will be tricky, as icy patches become more numerous.
Most locations fall within a 1″-3″ range, but locally higher amounts of 4″ can’t be ruled if any mesoscale bands develop.
Most accumulation occurs between now and midnight, but with only snow showers and flurries expected for early New Year’s morning.
Though snow today/tonight is a big story in the 7day forecast, I’d argue that morning low temperatures Wednesday & Thursday are more noteworthy. The combination of fresh snow/clouds clearing/light wind could result in the coldest temperatures for Indianapolis in nearly two years. February 9th, 2011 was the last single digit temperature (7°) for Indy, and January 21, 2011 was the last sub-zero low (-3°). This cold spell will carry into the weekend, though some long-range model data suggests warmer than normal conditions for the 2nd week of 2013. Stay tuned