The station said the collapse forced the evacuation of the building.
Around 3:20 p.m. employees in the newsroom heard what was described as a “thunderous boom.” A portion of the roof in an adjacent studio that is no longer in use had collapsed.
Staff called the fire department who responded and inspected the damage. Around 4 p.m., fire officials ordered about 100 people to evacuate.
Further inspection revealed that a concrete support beam and slab had shifted and dropped. As a result the entire roof of the building had been compromised.
WGAL also said the 5:00, 5:30, and 6:00 p.m. news will still air and crews are setting up a makeshift set in front of the building.