City Wide Sirens

The City of New Braunfels has an enhanced Alert Notification System to better protect and ensure the public safety of our residents and visitors. New Braunfels offers something for everyone to enjoy, most notably the Comal and Guadalupe Rivers. As the city of two rivers, residents and visitors enjoy lazy afternoons tubing and picnicking along the tranquil rivers. There are rare occasions that our rivers are not tranquil and become a hazard to life and property.

New Braunfels is located in Flash Flood Alley and is particularly vulnerable to flooding. Recorded data dating back to the early 1900’s details New Braunfels as having floods, with most recent floods of 1972,1998, 2002, and 2010 triggering the need to enhance the city’s warning system with the installation of Outdoor Warning Sirens. These sirens alert citizens and visitors in a more safe and timely manner. The Alert Notification System consists of eight (8) sirens strategically located throughout the city. 

In the event of an emergency, these sirens will be activated and a tone will be heard. Following a short tone of 5 seconds modulator sirens will broadcast an explanation of what has occurred and what actions you should take. Tone only sirens will broadcast only a tone.

The 2 types of warning signals used are:

  • Voice Signal: This is used for severe weather as well as the Tuesday siren testing.
  • Wail Signal: This is used for other alerts the city of New Braunfels requests its citizens to be aware of, like a hazardous material incident.


If you should hear the warning sirens, go inside and seek shelter immediately. Turn on a radio or television and listen carefully to instructions. KGNB AM 1420 is the designated Emergency Alert System (EAS) station for our area. New Braunfels residents with cable should tune to:

  • Channel 21 for Spectrum subscribers
  • Channel 99 for AT&T U-verse subscribers

Stay indoors until the danger passes. Please do not call 911 or New Braunfels Fire Stations for information unless you are reporting a life-threatening situation or hazardous condition.

Sirens are tested every Tuesday at Noon