Reducing the risk is called "mitigation." Although some mitigation is very expensive and complicated - like moving your home away from a river - some things are easy. Here are some ideas that you can share with your parents about how to mitigate your home:

Don’t put valuable items and appliances in the basement where they are more likely to be flooded. 

Power and water don’t mix! Have the main breaker or fuse box and the utility meters raised above the flood level for your area. That way, if your home floods, water won’t damage your utilities. 
 

Don’t lose your roof to high winds! Have hurricane straps installed to keep the roof attached to the walls. 

Use storm shutters to protect windows and glass. Use them when severe weather is coming. The storm shutters protect against flying debris like tree trunks or other things carried by strong winds. 
 

Bolt or strap cupboards and bookcases to the walls and keep heavy objects on the lower shelves so they don’t fall on people. 

Strap your water heater to a nearby wall. This will keep your gas water heater from falling on someone or starting a fire from a broken gas main. 

Have your home bolted to the foundation. Anchor bolts cost as little as $2 each. They should be installed every six feet on the outer edges of your house.