Passengers who weren’t buckled aboard a Delta Air Lines flight to Europe were violently thrown into the ceiling and back down to the floor in July when the plane encountered severe turbulence in a thunderstorm over Wyoming, according to a new report on the incident.

The National Transportation Safety Board said Tuesday that passengers endured 2.5 minutes of turbulence that caught the pilots by surprise on July 30 even though they had already altered their route to try to avoid the storms.

The seat belt sign was off so passengers, flight attendants and drink carts were thrown around the plane.

The flight took off from Salt Lake City and was bound for Amsterdam, but it diverted to Minneapolis, where 24 people were evaluated by paramedics and 18 were taken to hospitals.

Two crew membe

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