Officials at the US Open have decided to evacuate the Arthur Ashe Stadium due to expected severe weather in the New York area.
Radars have shown that a tornado is due to hit Flushing Meadows at around 11pm UK time.
As a result, officials made the decision to clear the area now with the safety of the public in mind.
The crowd had been watching the second men's semi-final of the day, where David Ferrer was leading defending champion Novak Djokovic 5-2 in the opening set.
It has since been confirmed that the match will resume at 4pm UK time tomorrow afternoon.
