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  2. List of civil defense sirens - Wikipedia

    en.wikipedia.org/wiki/List_of_civil_defense_sirens

    This page was last edited on 20 February 2025, at 19:46 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  3. Emergency alert sirens set to blare in Mora County every ...

    www.aol.com/emergency-alert-sirens-set-blare...

    Jun. 10—Residents living near the Hermits Peak/Calf Canyon Fire burn scar in Mora County can expect to hear sirens blaring at noon every Wednesday at least through the summer monsoon. The New ...

  4. Siren (alarm) - Wikipedia

    en.wikipedia.org/wiki/Siren_(alarm)

    A siren is a loud noise-making device. There are two general types: mechanical and electronic. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars, and fire engines.

  5. Civil defense siren - Wikipedia

    en.wikipedia.org/wiki/Civil_defense_siren

    A civil defense siren is a siren used to provide an emergency population warning to the general population of approaching danger. Initially designed to warn city dwellers of air raids ( air-raid sirens ) during World War II , they were later used to warn of nuclear attack and natural disasters , such as tornadoes ( tornado sirens ).

  6. California town of Paradise deploys warning sirens as 5-year ...

    www.aol.com/news/california-town-paradise...

    The new sirens, similar to a tsunami warning system, are being incorporated into the city’s emergency services, which include mass cell notifications, an emergency call center for people to call ...

  7. Did you hear the sirens go off last night? Here's what caused ...

    www.aol.com/did-hear-sirens-off-last-184304224.html

    When activated, sirens will sound for 3-5 minutes and repeat every 10-15 minutes while a warning is active. They do not sound continuously or issue an "all clear" alert when a warning expires.

  8. Federal Signal Modulator - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Modulator

    The Modulators in Chicago's siren system formerly used to run on the Alternate Wail tone during tornado warnings in order to vary from emergency vehicle sirens. However, in O'Hare International Airport, instead of using the main UV Wail or Attack, they use an Eclipse 8 (possibly) sound card doing attack. Before that is the Westminster Chimes ...

  9. Changes coming to outdoor warning sirens in Hillsdale County

    www.aol.com/changes-coming-outdoor-warning...

    HILLSDALE COUNTY — Hillsdale County’s Office of Emergency Management is making changes to traditional tornado watch and warning sirens.. Beginning March 4, a date planned to mark the beginning ...