While our next snowfall is still about 36-42 hours away, we are getting a handle on potential accumulations in northern Illinois and southern Wisconsin. Tuesday’s forecast still has a few challenges to overcome, including temperature, precipitation type, and the precise track of the low. The amount of snow that will fall and accumulate is dependent upon these three factors, among other things. For instance, if the surface temperature hovers around 33 to 34 degrees for much of the event, snow will melt on contact with the pavement and sidewalks. Also, if rain and sleet mix in with the snow for a prolonged period, accumulations will be on the lower end of the spectrum. Areas to the southeast of Rockford have the best chance for a wintry mix.
The general storm track of this system continues to place Rockford in the prime location for decent snowfall. The low is forecast to move northeast from the Bootheel of Missouri Tuesday morning to near Indianapolis on Tuesday night and into southeast lower Michigan on Wednesday night. Snow will begin to affect the Stateline area during the late morning hours of Tuesday and will continue for much of the day. As of this blog post–written on Sunday afternoon–the potential exists for 3 to 6 inches of snow. Again, snowfall accumulations will be on the lighter side where sleet and rain mix in. Another piece of energy will provide additional light snow accumulation of an inch or so on Wednesday.
Stay tuned to the Weather Blog and tune into 13 News on Monday as Chief Meteorologist Eric Sorensen, morning Meteorologist Greg Bobos, and myself will continue to monitor and fine-tune the forecast. Also, don’t forget to download the 13 Weather Authority smartphone app for Android and iPhone so you can track the snow from the palm of your hand!
This post was written by Joe Astolfi on February 24, 2013