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  2. List of Illinois tornadoes - Wikipedia

    en.wikipedia.org/wiki/List_of_Illinois_tornadoes

    A brief F1 tornado caused minimal damage in Mason City, [42] and an F3 tornado hit the crossroads of Illinois Routes 154–150, damaging six homes and causing $250,000 (1957 USD) in damages. [43] An F2 tornado moved for 4.5 miles across Jefferson County , deroofing multiple buildings and injuring two people. [ 44 ]

  3. Federal Signal Corporation - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Corporation

    Federal Signal was founded in Chicago, Illinois, as the Federal Electric Company in 1901 by brothers John and James Gilchrist and partner John Goehst, manufacturing and selling store signs lit by incandescent lamps. By 1915, they began manufacturing and selling electrically operated mechanical sirens (such as the Q Siren and

  4. 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 ...

  5. Illinois tornado siren has not worked for nearly a year ... - AOL

    www.aol.com/news/illinois-tornado-siren-not...

    A few dozen miles from an Amazon warehouse where six people died last year in a tornado, one of Belleville’s sirens has been out months. One resident said she got nearly endless referrals from ...

  6. Why is the tornado siren going off? What to know about ... - AOL

    www.aol.com/why-tornado-siren-going-off...

    An EF0 is the lowest rating, based on estimated wind speeds and related damage, on the 0-5 scale used to assign a tornado a rating, according to the NWS. These wind speeds can break branches from ...

  7. List of sirens built by Alerting Communicators of America

    en.wikipedia.org/wiki/List_of_sirens_built_by...

    This siren is similar to Federal Signal's Thunderbolt series. Only a single unit remains in service in Milwaukee, WI. Screamers Electro-Mechanical 2, 5, 7.5, 10 8, 9, 9/12, 10/12 1968–1994 Omni Directional 102–115 dB at 100 ft. Series of small vertical sirens, comparable to Federal Signal Corporation's vertical sirens. Sentry 95

  8. Warning sirens sound as multiple tornadoes touch down near ...

    www.aol.com/warning-sirens-sound-multiple...

    Warning sirens could be heard ringing out in downtown Chicago as multiple tornadoes touched down close to the city on Wednesday 12 July. The eerie sound could be heard in footage posted by Twitter ...

  9. Tornado outbreak of June 5–6, 2010 - Wikipedia

    en.wikipedia.org/wiki/Tornado_outbreak_of_June_5...

    The decision to sound tornado sirens was made in many communities. An EF1 tornado was confirmed just south of Battle Creek by the NWS; damage included a roof being torn off of a church. [12] An EF2 tornado damaged a total of 311 houses, apartments and commercial and public buildings in Monroe County. [13]

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