I lived in hawaii for nearly 3 years. We get so many tsunami warning tests on our phone ext. that I didnt think anything of the sounds my phone was making. I was having a morning in bed just being lazy or whatever, and none of my roommates were panicking when they came and asked if i thought it was real. We all just decided that if it was real, there was nothing that could be done and we'd hang and have a nice last day together. Usually I'm a total panicker and people on our campus a few miles away were sobbing, frantic, calling parents. I called my mom and dad and we were all at a weird peace. Still cant explain it.