Flying glass is extremely dangerous. Small rooms also tend to be more structurally sound. Lying in the bathtub with a mattress on top of you may provide good protection. As a last resort, lie in a ditch or culvert. Like vehicles, mobile homes are easily destroyed by tornadoes, even when anchored to concrete blocks.
Statistics show that more than one half of all tornado deaths occur in mobile homes.
If you live in a mobile home, it is wise to identify a nearby sturdy shelter well in advance, and go to that shelter when a severe storm is approaching. If you're caught in one during a tornado, go to a designated shelter area, or to the lower floor, an inside room, restroom or hallway, or get underneath a sturdy piece of furniture. If there is no time, take shelter under tables or desks. Avoid areas near high walls or large chimneys which may collapse. Stay away from elevators as the power may go off, trapping you inside.