The outdoor warning siren system consists of 10 large outdoor warning sirens located throughout the City of North Richland Hills. These sirens are activated and emit a steady tone for 2-5 minutes when there is immediate danger from a tornado, national security threat, or other hazard.
The National Weather Service issues a Tornado Warning or Severe Thunderstorm Warning with the phrase "Destructive winds in excess of 70 mph (or higher) are likely with this storm" in North Richland Hills
Trained spotters have reported a tornado in the jurisdiction, or in a neighboring jurisdiction that has the potential to affect North Richland Hills.
Reported hail of 1.25' in diameter or greater in North Richland Hills.
Other emergency as directed by the community's elected officials and Office of Emergency Management.
How to React
The sirens are designed to warn people who are outside to go inside and seek information from local news stations. Due to the efficiency of modern homes you may not hear the sirens in your home. The City of North Richland Hills recommends residents sign up for severe weather alerts at www.nrhtx.com/alerts or have another form of severe weather notification such as a NOAA all-hazards alert radio or weather alert application on your mobile phone.
Citizens are encouraged to turn their TV or radio to a locally broadcast channel or station to determine what hazardous situation exists when they receive a warning from any of these methods.
The outdoor warning siren system is tested at 1:00 p.m. on the first Wednesday of each month. The sirens will not be tested if inclement weather is forecasted or is in the immediate area.