Models Agree on Weekend Snow, Differ on Amounts | NBC Chicago

Models Agree on Weekend Snow, Differ on Amounts



    Expect snow this weekend, but just how much snow is still unclear. (Published Saturday, Jan. 24, 2015)

    Three forecast models used by NBC 5 Storm Team meteorologists agree on the likelihood of snowfall later this weekend.

    How much fresh snow will fall remained in question on Friday evening.

    The Global Forecast System model is the less aggressive of the three computer models. It predicts between 2 inches and 4 inches of new snow.

    The Rapid Precision Mesoscale model predicts snowfall totals in the 3- to 4-inch range. The North American Mesoscale Forecast System is more aggressive, calling for anywhere from 3 to 7 inches of snow in some areas.

    Accumulating Snow

    [CHI] Accumulating Snow
    Temps will rise into the 30s, but the wind will make it feel colder. There’s rain and snow in the forecast for the second half of the weekend. (Published Friday, Jan. 23, 2015)

    The weekend will start off mild, but there's a system that could reach the Chicago area by late Saturday night that may be a rain/snow mix before switching over to all snow by Sunday morning.

    The center of low pressure looks to be south and west of Chicago, an ideal location for producing heavier snow. The heavier snowfall totals are projected south of Chicago and in Northwest Indiana.

    There may be some lake effect enhancement as well.

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