Go to your basement or cellar. If you don't have one go to an interior room or hallway on the lowest floor of your house.
Tornado sirens go off when a tornado warning is issued and during their monthly test.
yes
Partially. A tornado warning means that a tornado is likely to form or already has formed.
Sort of. A tornado warning means that either a tornado has already formed or may form very soon.
Severe thunderstorms have the potential of producing a tornado with little or no advanced tornado warning.
No. A tornado warning means that a tornado is likely to form or has already been spotted.
"The tornado warning scared you." is active voice. "You were scared by the tornado warning." is passive voice.
command
Such a thing is impossible to predict. A tornado warning itself is a prediction that the threat of a tornado is imminent. As soon as signs indicate that a tornado warning is warranted, then one is issued. So there is no way of nowing when a tornado warning is going to be issued until it actually happens.
You should not be in a mobile home if there is a tornado coming. Mobile homes are very susceptible to tornado damage and should be abandoned for sturdier shelter during a tornado warning.
Tornado warning
A tornado warning is a higher level of alert, often meaning that a tornado has formed.