Remember that nothing beats a shelter in a good, deep basement. Check your landscaping. Keep that yard green and absent of brush. Get rid of it. Any exterior wood should be covered with fire resistant paint.
Ice plant makes absolutely the best fire break around.
Speaking of roofs, it was below code roofing that allowed many homes to be destroyed during Andrew that would otherwise have survived. Don't forget to include items of sentimenal and entertainment value in your bug out kit. My family photos have about the highest value to me of anything other than food, water and clothing. Include something to keep the kids from getting bored and onto your already frazzled nerves. Another thing you should do is to strap down any furniture that might tip over in a quake, especially top heavy stuff and the water heater - your favorite 30 gallon water supply station.