A quick-hitting winter system will bring snow to northern Pennsylvania and a wintry mix to southern areas tonight through Sunday, with some areas potentially seeing freezing drizzle. A more significant winter storm is expected Tuesday, which could produce widespread snowfall across the region.

Snow will begin spreading across northwestern Pennsylvania around midnight, with the highest accumulations expected in Warren County and other northwestern areas. The Laurel Highlands face a Winter Weather Advisory from 3 a.m. to noon Sunday due to the threat of freezing drizzle that could create slippery road conditions, particularly at higher elevations.

As the system moves through Sunday, some areas could experience snow squalls along the cold front, especially in the Alleghenies where instabili

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