Tornado shelter is the term used. If the shelter is underground then the term storm cellar may also apply.
It is usually called a tornado shelter. It may be called a storm cellar if it is underground.
The term most likely refers to a storm cellar or underground storm shelter. This is a small underground room designed for people to take cover from a tornado.
It is impossible to make such long-term tornado predictions for a specific locations.
It is best to take shelter from a tornado than to try to outrun it. If you are in a vehicle with no access to shelter and the tornado is distant it is best to drive perpendicular to the tornado's path in order to get out of its way.
A tornado shelter typically ranges in size between that of a large closet and a small office.
It is recommended to seek shelter in the basement during a tornado. If you are specifically referring to taking cover in the basement during a tornado, it can be simply called a tornado shelter.
It depends on the shelter. Though most are safe for anything but an EF5 tornado, which is extremely rare.
If you are outside with no shelter a available and a tornado is coming the best option is to lie in a ditch or depression in the ground
Tornado
a 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.
If a tornado is approaching and you are in a car abandon the vehicle and seek shelter is a sturdy building. If no shelter is available lie in a ditch or culvert.