I agree with JP76. I lived for 9 years in Corsicana with very active soil. Nearly all slabs moved. Nearly all cracks radiated out from doors and windows, usually a 45 degree angle. FEMA didn't like to pay for leveling a pier and beam house if a hurricane shifted the house. The location of the cracks was a critical clue to differentiate between vertical movement or horizontal movement. I had several squabbles with the QC guys over this same issue. They usually didn't last long when the found out I was a PE. That doesn't mean that you don't have/had slab movement.
I personally wouldn't worry too much about it unless it happens again. If the cracks come back, and there is no storm, then you know the slab may be a contributing factor. Also watch the brick veneer. If you have much slab movement, it usually shows up there also as cracks in the mortar joints.
Usually, slab movement is exacerbated by differences in the moisture content of the soil around your foundation. Watering the foundation is to assure a uniform moisture content all around the slab. If you have extensive landscaping on one side of the house and just ground cover on the other, the landscaping will suck moisture out of the soil more than the ground cover. Typically, moisture causes the soil to expand and it will shrink when dried. Just FYI.