Why do beach umbrellas fly?

Beach umbrellas can fly when strong winds catch their fabric, lifting them off the ground. If they are not securely anchored or weighted down, the force of the wind can create enough lift to send them tumbling or flying through the air. Additionally, the shape and design of the umbrella can amplify the wind's effect, making it more susceptible to being dislodged. This is why it's important to use proper weights or sandbags to secure them on windy days.