An image forming apparatus includes a detection portion that detects an earthquake, a plurality of job execution portions that each execute a job, an output portion that outputs information, and a control portion that, upon the detection portion detecting the occurrence of an earthquake, switches a mode of the image forming apparatus to an emergency mode, after a lapse of a prescribed wait time since the switching to the emergency mode, executes a self-diagnosis process for checking whether or not the job execution portions operate properly, and based on a result thereof, makes an output portion output information indicating an executable job and a non-executable job.