Outdoor Warning Sirens

Testing of Outdoor Warning Sirens 

Local municipalities within Tarrant County may conduct routine tests of their outdoor warning sirens to ensure equipment is functioning properly. Testing schedules can vary by jurisdiction, but tests are typically done on a monthly basis and will occur only during clear weather conditions to avoid confusion.

Activation During Emergencies 
Outdoor warning sirens may be activated when:

• A tornado warning is issued, and a tornado is believed to be imminent

• Severe weather poses a significant and immediate threat to life

• Other outdoor emergencies arise that require rapid outdoor notification 

Some jurisdictions may also use additional methods such as emergency vehicles, public safety announcements, or other localized alerting systems to help notify residents if time allows.

Frequently Asked Questions

When will the outdoor warning sirens sound? 
Sirens may be activated during tornado warnings, life-threatening weather, or other emergencies that require quick action. The decision to activate is made by the local jurisdiction responsible for the affected area.

What should I do when I hear a siren? 
Go indoors immediately and seek shelter. Once inside, monitor trusted information sources such as NOAA Weather Radio, local television, radio, or official Tarrant County alerts. Stay sheltered until officials announce that the danger has passed.

What if a tornado is approaching? 
Do not wait for a siren to sound. If you receive a tornado warning through any alerting method, take shelter right away. Outdoor warning sirens are intended to alert people outside, not indoors.

Important Note: 
Tarrant County Emergency Management does not activate local outdoor warning sirens. Activation is handled by the individual city or jurisdiction where the threat is occurring.