After a tumultuous Tuesday morning on the roadways, the National Weather Service is asking that drivers exercise caution during Wednesday's commute with blowing, drifting snow expected to create hazardous, slick travel conditions.
A lake-effect snow advisory for Lake, Porter, Newton and Jasper counties was expected to remain in effect until 4 a.m. Wednesday, according to the weather service. An advisory was expected to remain in effect until 9 a.m. for LaPorte County.
Moderate to heavy lake-effect snow showers were expected to continue through Wednesday morning in the Region, pushing storm totals to up to 16 inches in spots over northern Lake County and up to a foot of snow in northern and eastern Porter County, according to NWS.
Rapid changes in visibility will create dangerous travel, especially in heavier snow bands where whiteout conditions will be possible, according to the weather service.
Gallery: Late winter snow falls in Region
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The heaviest snow was expected to fall late Tuesday evening into early Wednesday before sunrise with snowfall rates of an inch or more per hour, according to the NWS. Parts of northern Lake County were expected to see 4 to 8 inches of new snow by Tuesday evening, with the possibility of higher isolated totals, the weather service said.
Conditions and accumulation totals can vary widely over short distances because of the nature of lake-effect snow, the weather service said.
Snow was not expected to arrive in LaPorte County until Tuesday night.
Some areas of LaPorte County could see an additional 4 to 7 inches through Wednesday morning. A single band of intense snow showers is expected, the NWS said. The location of this band could "migrate across the county overnight," with locally higher amounts possible if the band becomes stationary for several hours.
Just 1 to 4 inches were forecast for eastern and far southwest parts of LaPorte County, the weather service said.
Various bands of lake-effect snow developed Tuesday and continued into the late evening, affecting areas near the Porter County line.
Earlier in the day, traffic on the Borman Expressway slowed to a crawl as a band of lake-effect snow moved east over the area. Those in traffic were confronted with considerable delays, with backups stretching from the Interstate 65 interchange west to the state line.
Several local schools closed early Tuesday because of the weather.