Keep sufficient water levels in your pool provides the important weight to hold the sides and bottom in place, especially when heavy rains that accompany most storms raise the local water table. Pools which have been emptied may experience serious subsidence problems and could even be lifted off their foundation.
If your pool is properly equipped with adequate drains and skimmers and the surrounding area is properly drained, the water level can probably be left as it is.
It is recommended that you super chlorinate the pool water. You should “shock the pool” in your normal manner.
It is important that all electric power be turned off at the circuit breakers before the storm hits.
If you cannot store loose objects such as chairs, tables, pool equipment and toys inside a building, carefully and gently place them in the pool to help shield them from the winds.
Some damage to the frame of your enclosed screen structure may be avoided if you provide a “vent” for wind to escape through.