A winter storm is on track to continue to progress over the next few hours in McHenry, Lake and Kane Counties with heavy and patchy blowing snow starting late afternoon into the evening, according to the National Weather Service.
Snow is expected to accumulate to 3-6 inches Saturday night.
Over the next few hours, expect mixed flurries, light ice through mid afternoon, transitioning into heavy snow in the evening. Ice accumulation up to one tenth of an inch is possible with sleet accumulation possible as well. The National Weather Service has not received reports of ice accumulation as of early Saturday afternoon.
Northeast winds will gust as high as 40-45 miles per hour today and early this evening, and combined with the winter precipitation may cause further impacts, especially reduced visibility in snow late this afternoon and this evening, said Jake Tepr, meteorologist at the National Weather Service in Romeoville.
A winter storm warning is in effect until 3 a.m. Sunday in McHenry County, while a winter weather advisory remains in place until 3 a.m. Sunday in Kane County.
Snow and icy roads won’t be the only issue in the area.
After receiving an inch of rain Friday night, the southern area of Kane County is forecasted to reach minor flooding levels near the Fox River, Tepr said. A flood warning is in effect for Kane County until late Sunday night, from Red Gate Road in St. Charles downstream to Millington.
Low-lying parking lots at city hall and Boy Scout Island are threatened in St. Charles. The Fox River Trail is threatened at St. Mary Park in St. Charles, according to the National Weather Service.
A lakeshore flood warning remains in effect for Lake County until 6 a.m Sunday.
Strong north to northeast winds frequently gusting to 40 to 50 mph will build waves to 14 to 18 feet with occasional waves up to 23 feet along the lake this evening, according to the National Weather Service. This will cause significant flooding on the shoreline areas Lake County and Cook County.
Residents on or near the shore in the area should be alert for rising water.