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  2. File:Federal Signal RSH-10 Thunderbeam video.ogv - Wikipedia

    en.wikipedia.org/wiki/File:Federal_Signal_RSH-10...

    English: Video of Federal Signal Thunderbeam Warning / Civil Defense Siren Test in "Alert" mode for Severe Weather Awareness Week. Recorded in St. Paul, Minnesota, USA. Recorded in St. Paul, Minnesota, USA.

  3. Federal Signal Modulator - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Modulator

    A Federal Signal Modulator siren in Bay Head, New Jersey.. Federal Signal Modulators (also known as Modulator Speaker Arrays) are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes, fires, lahars, tsunamis, or any other disaster.

  4. 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).

  5. 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.

  6. Tennessee tornado sirens failed to sound in storm that ... - AOL

    www.aol.com/tennessee-tornado-sirens-failed...

    Since 2003, such sirens have been used in the state to alert residents to imminent danger from tornadoes.. In 2013, a $2m grant was provided to the Nashville county to upgrade the system with new ...

  7. Did you hear the tornado sirens last night? Here's why - AOL

    www.aol.com/did-hear-tornado-sirens-last...

    During tornado warnings, move to the lowest level of a sturdy building. It is best to go to a basement, safe room or storm cellar. If unavailable, use an interior room or hallway without windows.

  8. Siren (alarm) - Wikipedia

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

    Sirens are used on emergency service vehicles such as ambulances, police cars, and fire engines. Many fire sirens (used for summoning volunteer firefighters) serve double duty as tornado or civil defense sirens, alerting an entire community of impending danger. Most fire sirens are either mounted on the roof of a fire station or on a pole next ...

  9. Richland County to spent nearly $194,000 to upgrade tornado ...

    www.aol.com/richland-county-spent-nearly-194...

    Vasu Communications will upgrade controls for the county's 44 tornado warning sirens. American Rescue Plan Act dollars will pay for the project. Richland County to spent nearly $194,000 to upgrade ...