During a windstorm, the force of the wind pushes against the outside of your home. That force is passed along from your roof to the exterior walls and finally to the foundation. Homes can be damaged or destroyed when the energy from the wind is not properly transferred to the ground. Determine what type of roof you have. Homes with gable roofs are more susceptible to damage by high winds.
Gable roofs look like an A on the ends, with the outside wall going to the top of the roof.
The gable end represents a large obstacle to the wind and receives its' full force. If the framing of the gable end and the rest of the roof is not adequately braced to resist the wind, the roof can fail. Roof failures, especially in unbraced gable roofs, are a common cause of major damage to houses and their contents in high winds. This is something only a licensed contractor should do to ensure that the bracing is properly designed and attached. Examine the sheathing from the attic.