Severe weather triggered an emergency evacuation at the popular Stagecoach country music festival Saturday night, forcing thousands of attendees to leave the grounds.

A message displayed onstage instructed the crowd: “The festival has been postponed until further notice. Please move quickly and calmly to the nearest exit.”

Festival organizers also pushed an alert through the event’s mobile app, urging attendees to exit the venue and relocate their vehicles outside the site, according to NBC San Diego.

Videos shared by concertgoers showed large crowds moving toward exits as the situation unfolded.

By around 9 p.m., organizers issued an update saying “the show will resume momentarily” and that preparations were underway to reopen the festival.

The annual event takes place at the Empire Polo Club in Indio and saw the likes of Post Malone, Riley Green, Lainey Wilson and Cody Johnson performing this weekend.