The National Weather Service will issue a statewide tornado warning test in Kentucky Tuesday.The test comes a week after emergency sirens failed to sound in Louisville during a tornado warning, and the city will participate in the test.Kentucky Division for Emergency Management spokesperson Buddy Rogers says a warning signal will be sent shortly after 10 am Eastern Standard Time.The National Weather Service will use what they call a TOR header code. When they use that code that automatically triggers the alert notification systems through network which sounds off the alarms in weather radios and it also is simultaneously broadcast to television and radio stations," he says.The sirens did not go off in Louisville during last week's actual tornado warning because MetroSafe radios failed to pick up the signal. Supervisors then did not manually turn on the sirens when they learned about the warnings.Rogers says schools across the state will also use this time to conduct a tornado drill.