The arrival time of snowfall, currently 12:00 p.m., has trended later and the end time of snow fall has remained the same. However, snowfall amounts of 5-9″ amounts possible for far northeast Illinois have not been ruled out as of 7:45 a.m.ĥ. There is uncertainty regarding the forecasting of the accumulation of snow from lake enhancement. Winds are forecast to peak over 30 MPH around 3:00 p.m.Ĥ.
Winds gusts ≥25 MPH are forecast for the entire day Saturday, and will exceed 15 to 20 MPH from 12:00 a.m. Gusty winds will create potential for some blowing snow - especially west and northwest of I-55 after sunset. See #4 (below) regarding lake snow, which could leave us with more than 9 inches of snow anyway.ģ. Saturday, the forecast snow accumulation was 9.3 inches. The forecast for snow accumulation in Arlington Heights is 7.1 inches. There is a slight decrease in forecast snowfall accumulation totals, but hazardous travel conditions are still expected to develop this afternoon through late evening. Northwest Cook County, northeast Kane County, most of McHenry County (east) and all of Lake County are forecast with the best potential for Freezing Drizzle Saturday morning.Ģ. while picking up in intensity about 9:00 a.m. The icing period in Arlington Heights is forecast to last from 7:00 a.m. Freezing drizzle may develop in far northeast Illinois, which could result in light icing on untreated surfaces. There are seven primary concerns as the winter storm approaches …ġ. A Winter Storm Warning was issued Friday afternoon Decemand continues to be active Saturday morning, and effective 12:00 p.m.
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