The Waffle House Index This appears to be a real thing used by FEMA to determine the real-time impact of a storm or other disaster. It consists of three levels. Green, if waffle house is still open, indicates that it's not all that serious of a situation. Yellow, if Waffle House is serving a limited menu, means that there may be limited power or food supply. And red, if Waffle House is closed altogether, tells the government that it's time to get serious.