An Alabama Waffle House is pictured in 2018. Joe Raedle/Getty Images

Three Waffle House restaurants in Barry’s path are operating on generator power, according to Pat Warner, the company’s director of PR and External Affairs.

The Waffle House restaurants are located in Morgan City, Gray and just outside Kenner, he said.

Why we're watching Waffle Houses: The breakfast chain’s operations play a role in how the Federal Emergency Management Agency determines a storm’s severity — seriously.

FEMA coined the term “Waffle House Index” to measure the effect of a natural disaster on an area. If a Waffle House shuts down or limits its menu after such hazards, federal officials conclude the community took a major hit.

"The Waffle House test just doesn't tell us how quickly a business might rebound — it also tells how the larger community is faring," FEMA said in a 2011 blog post when Craig Fugate was administrator.

"The sooner restaurants, grocery and corner stores, or banks can re-open, the sooner local economies will start generating revenue again — signaling a strong recovery for that community."

CORRECTION: A previous version of this post state that the Waffle Houses were closed. They are operating on generator power.