A forecast issued to the public that a tornado may occur in a specified region.

This is issued by the National Weather Service when conditions are favorable for the development of tornadoes in and close to the watch area. Their size can vary depending on the weather situation. Th [..]

The alert issued when conditions are favorable for tornado formation.

  Weather conditions support the development of severe weather and tornado activity.

This is issued by the National Weather Service when conditions are favorable for the development of tornadoes in and close to the watch area. The watch is in a form of a rectangle whose size and orientation varies depending on the weather situation. They are usually issued for a duration of 4 to 8 hours. They normally are issued well in advance of [..]

A bulletin issued by the National Weather Service to alert the public, emergency management and other cooperating agencies when conditions are favorable for the development of severe thunderstorms and possible tornados in and close to a defined area. See watch.

This is issued by the National Weather Service when conditions are favorable for the development of tornadoes in and close to the watch area. Their size can vary depending on the weather situation. They are usually issued for a duration of 4 to 8 hours. They normally are issued well in advance of the actual occurrence of severe weather. During the [..]

A tornado watch is issued when thunderstorms in and near the watch box area may produce tornadoes.

Issued when conditions are favorable for the development of severe thunderstorms and possible tornados in and close to a defined area. Wall Cloud

Same as a severe thunderstorm watch but tornadoes are also possible in the watch area.

Issued when conditions are favorable for the development of severe thunderstorms and possible tornados in and close to a defined area.

Conditions are favorable for a tornado to develop, though a tornado has not currently been spotted. Be prepared to move to a safer location in a hurry if necessary.

Indicates that conditions are right within a certain area for tornadoes to form within developing thunderstorms. A tornado watch is issued for a large area that will include numerous counties. 

A tornado watch is issued why the weather conditions in a specific area/region are favorable for the development of a tornado.

This is issued by the National Weather Service when conditions are favorable for the development of tornadoes in and close to the watch area. Their size can vary depending on the weather situation. Th [..]