Why We Close Our Pools During Thunderstorms

If you've ever arrived at the Y excited for swim lessons, lap swim, or family swim only to find our pool closed because of lightning, we understand how disappointing that can be. While these closures may feel inconvenient, they are made with one thing in mind: keeping our members, staff, and community safe. 

Why is lightning so dangerous around water? 

Water is an excellent conductor of electricity. When lightning strikes a body of water or even the ground nearby, the electrical current can travel through water and surrounding surfaces. That means anyone in or around the pool could be at risk, even if the lightning didn't strike the pool directly. 

While our pools are indoors, they are still connected to plumbing, metal structures, and electrical systems. Because of this, there is still a potential risk during a thunderstorm. 

Please note: Our pools are grounded, but we are still required to close during inclement weather due to insurance requirements. 

Why does the entire pool deck close? 

Many people ask why they can't simply wait on the pool deck until the storm passes. The answer is simple: safety extends beyond the water. 

During a lightning event, we close the entire pool area, including: 

• Swimming pools
• Spa and water features
• Pool deck
• Spectator seating
• Lifeguard stands and surrounding spaces

The pool deck contains metal railings, plumbing, electrical equipment, and wet surfaces that can all increase risk during severe weather. Clearing the area allows our lifeguards and aquatics staff to focus on monitoring weather conditions and preparing to safely open the facility when it is appropriate. 

When do we reopen? 

Our aquatics team follows established safety protocols and monitors weather conditions closely. We reopen the pool only after at least 30 minutes have passed since the last visible lightning strike or clap of thunder in the area. 

If additional lightning or thunder occurs during that waiting period, the 30-minute clock starts over. While this can sometimes extend a closure longer than expected, it is the nationally recognized standard for lightning safety and helps ensure everyone can return to the water safely. 

Safety is always our priority

At the YMCA of Greater Seattle, we know that swim lessons, exercise, and family time in the pool are important parts of your day. We never close our pools unless it's necessary. 

Our commitment is to provide a safe, welcoming environment where everyone can build confidence, learn life-saving skills, and enjoy the water. Sometimes that means making the difficult decision to pause activities until conditions improve. 

Thank you for your patience, understanding, and partnership in helping us keep our community safe. We look forward to welcoming you back into the water as soon as it is safe to do so.