ST. LOUIS • Attendees of this weekend’s Fair St. Louis can expect heightened security measures and predictions of weekend rainstorms.

Police Chief Sam Dotson said Friday there is “no specific threat to the fair,” but that the department has learned to prepare, based on recent shootings and bombings in cities worldwide.

More than 250,000 people are expected to attend the city’s annual Fourth of July events from Saturday through Monday at Forest Park.

“When things happen around the world, whether it’s Orlando, Turkey, Paris, or San Bernardino, we look for lessons to learn from there,” Dotson said Friday.

He said the fairgrounds will have security checkpoints modeled after airport security. Some items not allowed into the fair include bottles, coolers, alcohol, explosives, weapons and fireworks.