CHICAGO (WLS) -- Overnight Chicago-area snowfall created hazardous road conditions and is causing delays at Chicago O'Hare International Airport on Sunday.

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Snow started to fall in the area between 9 p.m. Saturday and midnight before stopping, from west to east, between 6 a.m. and 9 a.m. Sunday, ABC7 Chicago AccuWeather Meteorologist Jaisol Martinez said.

By 8:15 a.m., snow had stopped in most areas along and north of Interstate 80, Martinez said. The last burst of snow in the Chicago area was moving along I-80, from around Joliet to around Gary, at the same time.

Between 2 and 4 inches of snow accumulation is expected for most areas, with some isolated higher totals north of Interstate 80.

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