A woman was found dead at the scene of a house fire in North Portland late Thursday night. Portland Fire and Rescue responded to the fire at a home in the 8200 block of North Wabash Avenue at 11:29 p.m. When firefighters arrived on scene, they said the structure was already heavily involved in fire. They found a woman on the front porch of the residence and determined she was already dead. Crews closed a block of North Wabash Avenue for the investigation. The investigation is ongoing. The Oregon State Medical Examiner will perform an autopsy on the deceased woman.