SKY 4 VIDEO - Devastation and rubble could be seen from Sky 4 following an explosion at US Steel Clairton Coke Works plant. Follow WTAE's team coverage here: https://www.wtae.com/article/us-steel-clairton-plant-explosion/65654312 | WTAE-TV Pittsburgh

SATURDAY SNOWSTORM: Before you head out today, make sure you know when the most snow could fall in your area. Full hour-by-hour snow projections here: https://www.wtae.com/article/pennsylvania-snow-saturday-december-13/69711712 | WTAE-TV Pittsburgh

New video shows the fiery wreck on the Parkway West near Pittsburgh's International Airport Thursday morning. What we know: https://www.wtae.com/article/i-376-eastbound-shut-down-near-pittsburgh-international-airport-following-crash-and-fire/65286437 | WTAE-TV Pittsburgh

Part of the roof collapsed during the massive fire at an apartment complex in Pittsburgh's Squirrel Hill neighborhood. Pittsburgh's Action News 4 was live on air when it happened. LATEST UPDATES: http://www.wtae.com/article/pittsburgh-fire-apartment-squirrel-hill-smoke-flames/66023493 | WTAE-TV Pittsburgh

LATEST FROM OFFICIALS: Three officers are dead, and two others were seriously injured after a shooting occurred in York County on Wednesday afternoon. https://www.wtae.com/article/multiple-officials-police-incident-york-county/66478271 | WTAE-TV Pittsburgh

MAJOR WINTER SNOWSTORM: Several inches of snow has already fallen across Western Pennsylvania, with more on the way. Ashley Dougherty WTAE is in Pine Township. LATEST HOUR BY HOUR: https://www.wtae.com/article/pennsylvania-weekend-snowstorm-hour-by-hour/70106584 | WTAE-TV Pittsburgh