The majority of tornado studies have been in the USA and the UK. These studies have been of more practical use in the US, since they can be so destructive there. The type of weather situation favourable for their development has been discovered. This is known as the climatology of tornado formation.
Images from satellites and radars can show features that indicate if tornadoes are about to form or have already done so. Numerical models are being developed that may also help. The important result of this is that warnings of the likelihood of tornadoes in a region can now be made and this has allowed people to take precautions. A system of watches and warnings, similar to those for hurricanes, has been developed.