FAA issues nationwide ground stop due to "extraordinary circumstances"

The FAA issued an extremely rare nationwide ground stop at all airports due to "extraordinary circumstances" and "reasons of safety."

The big picture: An air traffic control advisory posted Friday afternoon reads: "All departing traffic should remain ground stopped until further notice."

• "Inbound international flights will be managed on a case by case basis."

What they're saying: The FAA did not immediately respond to Axios' request for comment.

This is a breaking news story and will be updated.