Personally I'd go for a radiobutton list, with a submit button. That way there's time to double-check your selection. Furthermore the real alert should probably

Personally I'd go for a radiobutton list, with a submit button. That way there's time to double-check your selection. Furthermore the real alert should probably pop up a bright red page with flashing warning lights and siren sounds indicating that the user is entering a serious situation. This all is assuming that falsely sending a test alert is no big deal.