An explosion around 8:30 p.m. this evening jolted residents as the noise echoed across town. A semi heading into town on State Route 103 near Diamond Manufacturing experienced a malfunction. The quick-thinking driver pulled into the Diamond parking lot, disengaged the cab from the trailer, driving the cab to safety while the trailer was ablaze. Blufton rescue squads were immediately on the scene. Jefferson Street was blocked off from County Line Road to the railroad. Smoke from the fire was visible west of Main Street. Click here for a video.