At 0351 hours, Box 46-2 toned for a reported porch fire at 41N. Walnut Street, summoning Company 46, Engines 47-1, 91-5, Rescue 88, Tanker 47, 59, and Air 48 on the initial box alarm. Chief 46-2 went enroute, advised of a caller reporting the front porch on fire and everyone was evacuating. Chief 46-2 arrived shortly after confirming the report and requested the first alarm assignment. The remainder of Company 48 and Rescue 59 made up the working fire companies. 1 line was stretched from Truck 46 to knock down the fire on the porch of a 2 story, single-family, dwelling. An additional line was stretched an operated to chase fire that extended in the voids of the exterior siding. The bulk of fire was knocked down in 10 minutes and companies worked for another hour before companies started to take up.