A dancer doing various locking moves. Locking is a style of funk dance, which is today also associated with hip hop. The name is based on the concept of locking movements, which basically means freezing from a fast movement and locking in a certain position, holding that position for a short while and then continuing in the same speed as before.
A tornado warning is worse. It means that a tornado has been detected or the threat of one is imminent. A tornado watch means the overall conditions are favorable to form in a general area.
An example of a tornado watch for parts of Kansas and Nebraska, issued by the Storm Prediction Center on May 5, 2007. A tornado watch (SAME code: TOA) is issued when weather conditions are favorable for the development of severe thunderstorms that are capable of producing tornadoes. A tornado watch therefore implies that it is also a severe thunderstorm watch. A tornado watch must not be confused with a tornado warning. In most cases, the potential exists for large hail and/or damaging winds in addition to tornadoes. A watch does not mean that the severe weather is actually occurring, only that atmospheric conditions have created a significant risk for it.