you should go in a room with no windows or a closet, preferably in the center par of you house. A bathroom, and especially a bathtub make good shelter.
If you live in a trailer and a tornado warning is issued you should go to a nearby sturdy building, preferably one with a basement.
A tornado watch is not cause for too much concern. But if one is issued be on the lookout for if a tornado warning is issued. If you get a tornado warning you should head to your basement or storm cellar or, if you don't have that, an interior room or hallway away from windows.
If a tornado has been detected or spotted then a tornado warning is issued.
If a tornado is spotted a tornado warning is issued.
Tornado warning
If a tornado warning is issued and you live in a trailer leave it for more suitable shelter, preferably one with access to a basement or cellar.
Then get everybody in a closet or a basement, also have food stored and water, you will also need clothes.
The first tornado warning was issued on March 20, 1948 for a storm that produced a tornado in the Oklahoma City area.
If a tornado warning is issued around your area, you should probably go down to the basement or out door cellar. lf you don't have one, you should get to the lowest part of your house and stay away from the windows.
a tornado warning would be issued if it is in your county and a tornado watch if it is out of your county.
If a tornado warning is issued head to your basement or cellar if you have one or to an interior room or hallway on the lowest floor. A bathroom is often good shelter. If you live in a mobile home leave it for a sturdier shelter.
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.