Persistent snowfall overnight is giving the region the same results to which residents have become accustomed -- slippery roads and sidewalks, and school delays and closings.

Among the school closings: the Pittsburgh Public School, which previously had said it would operate under a 2-hour delay.

See information about school closings and delays on KDKA.com, the Post-Gazette's news partner.

Snow continues across southwestern Pennsylvania this morning. (image updates periodically)

The winter weather advisory, meaning periods of snow will cause travel difficulties, continues until 6 a.m. Thursday for Allegheny, Armstrong, Beaver, Butler, Cambria, Clarion, Forest, Greene, Indiana, Jefferson, Lawrence, Mercer, Somerset, Venango and Washington counties. Also included in the advisory area are the northern counties of West Virginia.

Travelers head east into the higher elevations likely will face more snow. A winter storm warning is in effect until 6 p.m. Thursday for Fayette and Westmoreland counties. Also in the warning area are Preston and Tucker counties in West Virginia and Garrett and western Allegany counties in Maryland.

Expect steady snow throughout most of the morning. Highs today should reach near 30.

Check out the PG's weather page for the latest conditions and forecast -- and, of course, the Countdown till Spring clock. Commuters also can access the updated traffic conditions.

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