Before the storm
Do not drain the pool. A full pool resists wind and debris and, more importantly, an empty shell can lift out of saturated ground. Lower the water a few inches at most if it is overfilled. Shock the pool a day before landfall so it starts the storm with high chlorine. Remove floats, loose furniture and the cleaner; do not throw furniture into the pool, it damages plaster and the pool fills with debris anyway.
Equipment
Turn off the breaker to the pump, heater and lights. Flooding and power surges are the usual equipment killers. If the equipment pad floods regularly, ask about raising it before next season.
After the storm
Do not run the pump until the equipment pad is dry and the power is stable. Remove large debris with a net first, then start the pump and check the pressure. Expect cloudy water: test and shock again, brush and let the filter work. Backwash or clean the filter as it clogs. Most pools are back in three to five days.
When to call for help
If the water is dark green, the equipment sat under water, or debris is beyond what a net can handle, a one-time cleaning plus algae treatment is the fastest route back. Weekly customers get an extra debris pass after named storms at no charge.
Questions
Should I cover the pool?
Not with a standard cover; wind and branches tear it and dump debris in anyway. A properly anchored safety cover is fine if you already own one.
My pool overflowed and flooded the yard. Is the pool damaged?
Rarely. Overflow drains through the deck and skimmer; check the water level and equipment once things dry out.