It sounds like you are doing a great job maintain your property and keeping it FireSmart.
That being said, FireSmart diligence is a year-round activity and even a low risk property can become high risk once leaves or needles drop from trees.
Windstorms and tree shedding can create pockets of debris in corners and areas of your home that can become major hazards in a wildfire event. Embers from large fires can travel great distances and start fires miles away, so even the most prepared people can still be affected by a fire.