Not sure if that was an explanation for me, but I've seen it before and I wasn't basing it off that. This was obvious from the sound. The plane was too far away

Not sure if that was an explanation for me, but I've seen it before and I wasn't basing it off that. This was obvious from the sound. The plane was too far away for me to see a condensation cone. It was probably somewhere over Angel Island at the time. A sonic boom, on a small scale, isn't something impressive...bullets cause sonic booms, even the tip of a bullwhip will. I had been around high explosives before too, an oddity of my father's profession. This wasn't just a loud jet, it literally sounded like a bomb, and it resonated for what felt like 5-10 seconds.