Pennsylvania transportation officials are urging drivers to avoid unnecessary travel as a winter storm is expected to bring heavy, wet snow overnight Monday into Tuesday , potentially affecting morning and afternoon commutes.

The storm will bring up to 6 inches of snow accumulation in some areas, with snowfall rates of one-half to three-quarters inch per hour expected, and up to 1 inch per hour in some locations, according to the Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission. In southeast Pennsylvania, snow will transition to sleet and freezing rain before changing to rain.

In the Lehigh Valley and Warren County, a Winter Weather Advisory updated Monday afternoon from the National Weather Service says to expect mixed precipitation from 4 a.m. to 1 p.m

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