When sirens sound and you see a tornado warning come across your cell phone, computer, TV, or hear it on a weather radio or local radio station, you need to act immediately. This is not the time to think about and come up with a plan. If you do not have a plan at home, at work, at daycare, etc. NOW is the time to get a plan together and make sure everyone knows it. You should not be standing thinking "what should I do" during a warning. Take shelter immediately! The media is reporting that Norman, Okla., had a 16-minute warning. Think about where you are during your normal 24-hour schedule.