The Waffle House Index is a metric named after the ubiquitous Southern US restaurant chain Waffle House known for its 24-hour, 365-day service. Since this restaurant always remains open (except in extreme circumstances), it has given rise to an informal but useful metric to determine the severity of a storm and the likely scale of assistance required for disaster recovery. It was coined by former administrator Craig Fugate of the Federal Emergency Management Agency (FEMA). The metric is unofficially used by FEMA to inform disaster response.