ROCKFORD (WREX) — Wintry precipitation pops up almost every other day this week, and could lead to some slick spots at times.
The first chance develops overnight. Like we saw Sunday night, a storm system grazes the Stateline. A mix of snow flurries, freezing drizzle, and freezing fog is possible after midnight. This mixture looks to develop in patches, so not all areas will see the light mix.
While accumulations will be very light (under 1/2" for snow, and/or a very light glaze of ice), slick spots are possible. Bridges and overpasses may be prime spots for ice, since these structures are exposed to the cold air and freeze a lot quicker. Tuesday quickly warms above freezing in the morning, eliminating any ice quickly.
Tuesday dries out quickly after sunrise, and stays dry for the remainder of the day. The next round of wintry weather arrives Wednesday. A mix of freezing rain and snow moves in early Wednesday morning. As warmer air pushes in, regular rain showers may take over by the middle of Wednesday morning. We'll be dry again by Wednesday afternoon. As with Tuesday, accumulations are likely to be very light.
Finally, keep a close eye on Friday throughout the week. There is the possibility of a stronger storm system arriving Friday. An early look at the forecast shows snow showers sliding in Friday morning, and continuing throughout the day. Heavy snow is a possibility as well, so we may see a few inches of snow by Friday evening. At that point, warmer air floods the Midwest. This may lead to a change from snow to freezing rain and/or sleet as the upper part of the atmosphere warms.
Icy precipitation lingers into early Friday night, yet as we keep warming up, surface temperatures may catch up. This could lead to regular rain showers by Saturday morning. By sunrise, colder air moves in behind the departing storm. This may lead to a little more snow before the storm leaves at the end of Saturday morning.
There are a lot of moving pieces with the Friday storm, and a lot could still change. Like last week, monitor the forecast as it evolves throughout the week.