* ADDITIONAL DETAILS…The heavier snow rates appear most likely between 3 and 11 PM Saturday. Blowing snow after sunset Saturday could significantly reduce visibility, especially along the Lake Michigan shoreline. * IMPACTS…Travel could become very difficult. * WHEN…From noon today to 6 AM CST Sunday. * WHERE…Portions of northwest Indiana and northeast Illinois. Northeast winds could gust u P to 40 mph Saturday afternoon and evening, especially near the lake. Total snow accumulations of 5 to 9 inches are expected. * WHAT…snow, falling heavily at times, with developing blowing snow and dangerous travel expected. …WINTER STORM WARNING REMAINS IN EFFECT FROM NOON TODAY TO 6 AM CST SUNDAY… ILZ006-013-103>105-INZ0045- /O.W.0005.220101T1800Z-220102T1200Z/ Lake IL-DuPage-Northern Cook-Central Cook-Southern Cook-Lake IN- Porter- Including the cities of Waukegan, Buffalo Grove, Mundelein, Gurnee, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn, Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park, Park Forest, Gary, Hammond, Merrillville, Portage, Valparaiso, and Chesterton 632 AM CST Sat Jan 1 2022 See also /clouds Winter Storm Warning URGENT – WINTER WEATHER MESSAGE National Weather Service Chicago IL 632 AM CST Sat Jan 1 2022 Snowfall accumulation forecast for Januto Janu… Weather Radar) shows a large area of precipitation approaching from central Illinois and Iowa. Wind Chill is forecast down to -7☏ at 8:00 a.m. Sunday, and then drop the rest of the day to a low of 4☏ from 3:00 a.m. Sunday, rise to only 19☏ about 12:00 p.m. Falling temperatures will drop to 22☏ by 3:00 a.m. Therefore, the heart health risk related to overexertion with hand shoveling is higher, the closer the shoveler is to Lake Michigan.ħ. The snow will be wetter near the lake due to additional moisture available from the existence of Lake Michigan water temperatures that are on the warm side for this time of year. In other words, snow will be fluffier and drier west and wetter and heavier near the lake with a lower snow/water ratio near Lake Michigan. The snow wetness has not been established in the forecast from the National Weather Service - only that the snow will be wetter in a gradient from far west Chicagoland to the lake shore of Lake Michigan. Travel conditions are expected to degrade during early afternoon with about 2.5 inches of snow on the ground with gusty winds in Arlington Heights by 6:00 p.m. Therefore, the duration of snowfall has shortened since the forecast from two days ago. 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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