Generally speaking you want to put as much between you and the tornado as possible and there is little better protection than the ground itself. Also, when you get into a lower position you reduce your chance of being struck by debris, which is what causes most injuries and deaths in tornadoes. Additionally if there is a partial collapse of the building you're in, usually the upper portions are the first to fail.
What you should do in a tornado if you're in your home is that you must go immediatley to your basement because since basements are underground, it's impossible for a tornado to hit your basement. If you don't have a basement, my friend told me that you should go to a room with no windows.
If you have an underground basement with no door but with a trapdoor to go in, go in and protect you head.
You should go in your basement or underground. If you don't have access to a basement get to a closet or bathroom in the center of you house. Stay away from windows.
no that's impossible occur on top of the ground
If you are in a mobile home and a tornado is coming you should leave and find a sturdier structure nearby, preferably one with a basement or cellar. Some trailer parks in tornado-prone areas have communal underground storm shelters that you can go to.
When tornadoes strike, you should get underground immediately, eg. cellar
You should have a pre-planned place to go that you can get to quickly. This can be a sturdy building, preferably with a basement, or an underground shelter. Some mobile home parks have underground storm shelters.
If you can, go to a basement or cellar. If you cannot get underground, go to an interior room or hallway on the lowest floor. Bathrooms often provide good shelter.
The safest place in a tornado is a basement or underground storm shelter. If no underground shelter is available the best shelter is a central room away from windows on the lowest story of a house.
in an underground basement
The safest thing to do is to go to an underground shelter such as a basement or cellar.
You should not even need to go outside during a tornado. Let's say you forgot something outside and a tornado is there. Should you go out? NO! Because it is very scary to go outside during a tornado. But you should gather your family together, and then go in a basement or closet. Try to keep safe.