Winter storm warning in effect
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The National Weather Service said the fog could lead to black ice and limited visibility, and urged drivers to exercise caution.
On Saturday at 9:30 p.m. a winter storm warning was released by the National Weather Service in effect until Sunday at 1 p.m. for Beaver and Indiana counties.
The Tuesday morning commute in northern New Jersey could be messy with a mix of snow, sleet and rain, forecasters say.