"(In the 'Waffle House Index,') green means the restaurant is open as usual, yellow means it’s on a limited menu, and red means the restaurant’s closed," Yu wrote.
"It just doesn't happen where Waffle House is normally shut down," Philip Strouse, FEMA's private sector liaison for the Southeast, told Markeplace in 2015. "... They're the canary in the coalmine, if you will."
He added that the index "gives us a pretty good feel right away of what's going on at what time."
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Former FEMA administrator Craig Fugate tweeted Friday that the Waffle House Index is green, meaning the full menu is available.
Waffle House officials said disaster preparedness is a major part of their ethic, including plans to rent generators as needed and a pared-down menu for efficiency.
The company’s top executives are gathered at the Waffle House headquarters in Norcross to monitor Hurricane Dorian and coordinate their response.
Unfortunately, vice president Pat Warner said last year, the emergency menu doesn't include bacon — or waffles.
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