Definitions for "Tornado Warning"
A bulletin issued by the National Weather Service to warn the public, emergency management and other cooperating agencies when a tornado is forecast to occur or is occurring. See warning.
Issued over an area when a tornado has actually been sighted or is indicated by radar.
A tornado has been reported or is being indicated as possible by Doppler radar. Immediate action should be taken.
Keywords:  beeper, intercom, signal, over, system
a beeper signal over the intercom system