How to Prepare Your Swimming Pool for a Hurricane
1. Remove Furniture: If you have tables, chairs, umbrellas, floats (anything mobile) around the pool area place in a secure area out of the wind as they can become flying projectile. Do not put the furniture in the pool as it can cause damage to the furniture and your pool.
2. Filter System: The most common damage done to a pool during a hurricane is with the filter system-- specifically with pumps that become submerged in water. You should shut off the pool pump as a hurricane approaches. Pumps and filters usually have tabs on the base that will allow you to secure them to the slab if you want to keep it from flying away.
Gas pool heaters should have the gas supply shut off at the heater. You also should shut off propane supply at the propane tank and for natural gas heaters, close the valve on the main house gas meter that leads to the pool heater.
If your filter system has any chance of being 'under water', it is best to take your pump off of the system and put it away. Pump unions can be installed to allow you to remove and reinstall the pool pump more quickly.
3. Covers: Some people cover their pools during huge storms. This is usually not a good idea, especially when it comes to automatic covers. Because most automatic covers are solid vinyl, they need a submersible pump on them to keep the water from building up too much on top. But if the electricity cuts out, and the pump doesn't work, too much water weight can collapse the cover which is not covered under warranty. Leave the cover off.
4. Do Not Drain The Water: When extended rains raise the water table, hydrostatic pressure will build to a point where it can push on the pool and pop it out of the ground. The weight of the water in the pool will help to hold the pool in place, as underground water levels build.