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Device used to warn public of danger
A civil defense siren is a form of siren used to warn civilians of approaching danger - a form of emergency population warning. Initially designed to warn
Civil_defense_siren
This is a list of civil defense sirens. ACA Allertor ACA Cyclone ACA Hurricane ATI HPSS Thunderbolt (siren) Federal Signal 3T22 / 2T22 Federal Signal Model
List_of_civil_defense_sirens
Noise-making device
A siren is a noise-making warning device. There are two general types: mechanical sirens and electronic sirens. Civil defense sirens are mounted in fixed
Siren_(alarm)
Protection of citizens from disasters and military attack
around the country. The American Civil Defense Association Blast shelter Civil-defense Geiger counters Civil defense siren Collective protection Continuity
Civil_defense
Civil defense siren
1942, the Office of Civil Defense brought Bell Laboratories and Chrysler together in Washington D.C. in order to develop a new siren, which was named the
Chrysler_Air-Raid_Siren
Electro-mechanical and rotating-directional civil defense siren
Hurricane is an electro-mechanical and rotating-directional, 130dB civil defense siren, manufactured by Alerting Communicators of America (ACA). ACA began
ACA_Hurricane
Lebanese public emergency medical service
Special Forces Lebanese Red Cross Civil Defence related topics: Blast shelter Civil-defense Geiger counters Civil defense siren Effects of nuclear explosions
Lebanese_Civil_Defense
US federal agency tasked with civilian health in the event of military attack (1961-1979)
public entertainment.” Emergency Broadcast System Civil defense Geiger counters Civil Defense Sirens in the United States United States Department of Homeland
Office_of_Civil_Defense
Prototypical grade crossing signal formerly located in Grenada, Mississippi
direction that oncoming trains were traveling and an air raid siren (civil defense siren) in lieu of bells provided aural warning. As a backup, standard
Billups_Neon_Crossing_Signal
American manufacturer and brand of civil defense sirens
Sentry Siren, formerly known as Sterling Siren Fire Alarm Corporation, is an American manufacturer and brand of civil defense sirens. Sentry Siren was founded
Sentry_Siren
Electronic outdoor warning siren
In civil defense sirens, the ATI High-Power Speaker Station (HPSS), is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI)
ATI_HPSS
2025 war in West Asia
the Kirya military headquarters near Begin Road; others were shot down. Sirens were activated in Amman, Jordan's capital. Some drones were intercepted
Twelve-Day_War
Siren manufacturing company
Canadian Line Materials LTD. (CLM) was a Canadian siren manufacturing company which built civil defense sirens. It was originally founded as a division of the
Canadian_Line_Materials
Civil Defense sirens in England
The Severnside Sirens are a system of civil defense sirens by Federal Signal Corporation located along the South Severn Estuary coastline from Redcliffe
Severnside_Sirens
Network of emergency sirens installed around Singapore
The Public Warning System (PWS) is a network of civil defense sirens installed by the Singapore Civil Defence Force on over 2,000 strategic points in
Public Warning System (Singapore)
Public_Warning_System_(Singapore)
Topics referred to by the same term
alert state Red Alert, the "attack imminent" alert signal for the US civil defense siren Red alert state, the most serious alert state in the UK BIKINI state
Red_Alert
warning sirens built by Biersach & Niedermeyer Co., Alerting Communicators of America and American Signal Corporation. List of civil defense sirens "BNCO
List of sirens built by Alerting Communicators of America
List_of_sirens_built_by_Alerting_Communicators_of_America
of Israel. "Woman killed, 22 injured in direct strike in Tel Aviv after siren sounded late". Ynet. 28 February 2026. Levine, Heidi; Soroka, Lior; Chason
Casualties of the 2026 Iran war
Casualties_of_the_2026_Iran_war
Tornado warning siren brand
air into the rotor. The blower increases the siren volume by 50 decibels. In the 1980s, when civil defense fell into disuse, Thunderbolts across the United
Federal_Signal_Thunderbolt
Jewish custom
prohibited on Shabbat. Some Jewish communities sound a converted civil defense siren on Friday afternoon to announce that Shabbat will begin in order
Shabbat_siren
1995 Japanese animated science fiction anthology film
the officer in charge of firing the railway gun. As he sleeps, a civil defense siren sounds and a blue light sweeps across the window. Directed by Kōji
Memories_(1995_film)
American warning siren and sign maker
for mass notification, such as omnidirectional sirens (electronic civil defense sirens), rotating sirens, and student alert systems with voice broadcast
Whelen_Engineering_Company
Former method of emergency broadcasting in the United States
their alert sirens. In contrast, the City of Sacramento civil defense director waited for further confirmation before sounding the citywide siren; ultimately
CONELRAD
Type of loudspeaker capable of producing very low frequency sound
were removed some time before September 2023. Eminent Technology Civil defense siren "Eminent Technology TRW-17 Rotary Subwoofer". Sound & Vision. 2010-08-17
Rotary_woofer
the Israeli Home Front Command established upgraded standards for civil defense that included technical specifications for designated protected spaces
2026 Iranian strikes on Israel
2026_Iranian_strikes_on_Israel
City in Iowa, USA
Signal Corporation 2T22 civil defense siren to warn of the tornado, keeping his finger on the activator button until the siren was literally ripped from
Rudd,_Iowa
Native American attack—a very early precursor to the wailing sirens of the Cold War. Civil defense truly began to come of age, both worldwide and in the United
Civil defense in the United States
Civil_defense_in_the_United_States
System for early identification of hazards
A HSS Engineering TWS 295 electronic Civil Defense siren.
Early_warning_system
Emergency population warning system used within Europe
2023, first activated during Denmark's annual national test of the civil defense siren system in May 2023. UK Emergency Alert System: Launched in 2023.
EU-Alert
Topics referred to by the same term
performance measure Closed-loop manufacturing Canadian Line Materials, a Civil Defense Siren manufacturer Channel length modulation Committee on Copyright and
CLM
Type of signal (or device) that alerts people to a dangerous condition
occurs. Common public safety alarms include: civil defense siren, also known as tornado sirens or air raid sirens fire alarm systems fire alarm notification
Alarm_device
loudspeakers are also used as an early warning system and function as civil defense sirens in countries such as Turkey and the United Arab Emirates. The first
Loudspeakers_in_mosques
Sound-making device for moving vehicles
slowed down to drop the pitch. Bicycle bell Civil defense siren List of auto parts Vehicle-mounted siren Vehicle-mounted whistle Lansey, Jonathan (2025-12-08)
Vehicle_horn
F5 tornado in 1991
Force Base at 6:25 p.m.. The base was already on alert and had their civil defense siren blaring as the tornado struck. A building belonging to the Boeing
1991_Andover_tornado
Emergency warning system in Ukraine
bridges, and minefields. 2022 Russian invasion of Ukraine Red Color Civil defense siren "סטודנט ישראלי פיתח "מערכת צבע אדום" לאזרחי אוקראינה - וואלה! טכנולוגיה"
Ukraine_Siren_Alerts
Device that imparts energy to the fluids by mechanical action
Roots superchargers on internal combustion engines. A brand of civil defense siren, the Federal Signal Corporation's Thunderbolt. A peristaltic pump
Pump
Topics referred to by the same term
Zarlino Modulations, Jørgen Plaetner Federal Signal Modulator, a civil defense siren Modulation (European Union), an authorized reduction in direct aid
Modulation_(disambiguation)
Corporation Civil defense siren "Modulator™ High-Powered Speaker Array". Federal Signal. Retrieved 2026-06-24. "Model 2 Omnidirectional Siren". Federal
List of sirens made by Federal Signal
List_of_sirens_made_by_Federal_Signal
Civil Defense siren
dual-tone outdoor warning siren produced from 1968 to 2007 by Alerting Communicators of America (ACA). Originally intended for civil defense purposes, early versions
ACA_Cyclone
Communication system used for emergency coordination
telephones and sirens became commonplace. After the surprise attack on Pearl Harbor, by the Japanese in 1941, Civil Defense sirens became popular and
Emergency communication system
Emergency_communication_system
Natural disasters in the USA
Officials said that civil defense sirens were not activated during the fire even though Hawaii has the world's largest integrated outdoor siren warning system
2023_Hawaii_wildfires
Unincorporated community in Pennsylvania, US
Pennsylvania known to have an active and running ACA Allertor 125 Civil Defense warning siren. Tarrs has its own post office, with zip code 15688. It was established
Tarrs,_Pennsylvania
Protection from human and natural disasters
Civil defense in Israel deals with a variety of military and terrorist threats to the civilian population, which have included concealed bombs such as
Civil_defense_in_Israel
City in Illinois, United States
technician for the National Aeronautics and Space Administration City Civil defense siren O’Fallon War Memorial Hesse Park "Form of Government City of O'Fallon"
O'Fallon,_Illinois
American radio personality
introduction that had a mixture of The Wizard of Oz, church bells and a Civil defense siren: "We're not in Kansas anymore...it's among the hour to come amongst
The_Electrifying_Mojo
Activity to ensure the safety and security of the public
Association of Public-Safety Communications Officials-International Civil defense Civil defense sirens Common Alerting Protocol Consumer Product Safety Commission
Public_security
Anti-aircraft shelling during WWII against an imagined invader
the city of Oakland closing its schools and issuing a blackout; civil defense sirens mounted on patrol cars from the Oakland Police Department blared
Battle_of_Los_Angeles
American manufacturer headquartered in Downers Grove, Illinois
to install and remove civil defense sirens, where they can be purchased and refurbished by private collectors. Rumbler (siren) Q2B Federal Signal Model
Federal_Signal_Corporation
2011 EF5 tornado in Joplin, Missouri, US
Here, the tornado downed several large trees at EF0 intensity. Civil defense sirens sounded in Joplin twenty minutes before the tornado struck, in response
Joplin_tornado
System to inform of a future danger
Wikimedia Commons has media related to Warning systems. Testing sirens, Swiss Federal Office for Civil Protection (page visited on 7 September 2013). Sättele,
Warning_system
Annual hacker camp in Funen, Denmark
with a noise barrier made from soil. A Dutch hacker brought an old civil defense siren for testing purposes. Within a few minutes, four separate phone calls
BornHack
Topics referred to by the same term
now part of Intel's Programmable Solutions Group ACA Cyclone, a civil defense siren 38th Infantry Division (United States), nicknamed Cyclone Caudron
Cyclone_(disambiguation)
Topics referred to by the same term
School (Utah) Hurricane High School (West Virginia) ACA Hurricane, a civil defense siren Hurricane, a type of glass candle holder All pages with titles beginning
Hurricane_(disambiguation)
Specialized radio receiver for weather forecasts
Emergency Warning Signal Emergency Alert Australia All clear J-Alert Civil defense siren International Early Warning Programme Warning system Indian Ocean
Weather_radio
Varieties of the color yellow
warning signs, guard rails, dangerous equipment, older American civil defense sirens (typically from the 1950s and 1960s), and some high-visibility clothing
Shades_of_yellow
2005 musical fantasy television film
to the audition and gives them a demo CD. In returning home, the civil defense sirens sound as a tornado is headed for Dorothy's trailer park. When Aunt
The_Muppets'_Wizard_of_Oz
Short story by Mircea Eliade
dealer on a street in Bucharest during the Second World War. After a civil defense siren announces the imminence of an air raid, Iancu Gore is hiding in an
Twelve Thousand Head of Cattle
Twelve_Thousand_Head_of_Cattle
Device that was available in the United States
localized sirens and the CONELRAD radio-alert system. The United States Army argued that in the age of intercontinental ballistic missiles a civil-defense warning
National Emergency Alarm Repeater
National_Emergency_Alarm_Repeater
2025 security exercise
air raid sirens activated at 4:00 PM to signal the commencement of the drill. This initiative mobilized thousands of personnel, including civil defence
2025 India civil defence mock drill
2025_India_civil_defence_mock_drill
1967 war between Israel and Arab states
attacked by the other country. On 5 June at 7:45 Israeli time, with civil defense sirens sounding all over Israel, the IAF launched Operation Focus (Moked)
Six-Day_War
Former United States emergency warning system
Governor's Office of Emergency Services. October 11, 2017. p. 27. "City's Civil Defense Sirens Will Be Tested Tomorrow", The New York Times, New York, NY, p. 30
Emergency_Broadcast_System
Withdrawn locomotives kept for a national emergency
Air raid shelter Bunker Blast shelter Bomb shelter Geiger counter Civil defense siren List Emergency population warning Fallout shelter Merkhav Mugan Safe
Strategic_steam_reserve
Building complex in Kansas City, Missouri
lofty rooftops, an extremely loud civil defense siren. This building received the world's loudest, a Chrysler Air-Raid Siren powered by a Hemi V8 engine. On
Hardesty_Federal_Complex
Positive-displacement lobe pump
volume of air for the movement of bulk solids through pipes. Some civil defense sirens used Roots blowers to pump air to the rotor (chopper) so as to drastically
Roots_blower
Skyscraper in Toledo, Ohio, US
reference datum for the city of Toledo One of Toledo's original civil defense sirens was installed on the roof in the 1950s and remains in service. The
PNC Bank Building (Toledo, Ohio)
PNC_Bank_Building_(Toledo,_Ohio)
Weather warning indicating an observed severe thunderstorm
the warned area during the severe thunderstorm warning's duration, civil defense sirens, if present, are usually activated within the region to be affected
Severe_thunderstorm_warning
False alarm sent over all communications media in the U.S. state of Hawaii
at 8:08 a.m. local time and the state had not authorized civil defense outdoor warning sirens to sound. Occurring during the 2017–2018 North Korea crisis
2018 Hawaii false missile alert
2018_Hawaii_false_missile_alert
Basketball club in Belgrade, Serbia
defeating FMP in the finals, in a game that was played to the sound civil defense sirens. Despite the ongoing air strikes, the game was completed. Partizan
KK_Partizan
2012 British TV series or programme
Backyard boffins, including a triple backflip on a BMX bike, homemade civil defense siren, and a submarine made from a propane tank. Hackaverse - May 10, 2014
Outrageous_Acts_of_Science
Tsunami warning center on Ford Island, Hawaii, United States
the Emergency Alert System, and in some places (such as Hawaii) civil defense sirens and roving loudspeaker broadcasts from police vehicles. The public
Pacific Tsunami Warning Center
Pacific_Tsunami_Warning_Center
Decommissioned power plant in California, US
Also scattered throughout the area around the plant are abandoned civil defense sirens that at one time would have warned people of a radioactivity release
Rancho Seco Nuclear Generating Station
Rancho_Seco_Nuclear_Generating_Station
notable because this was the first time in Minnesota history that civil defense sirens were used to warn people of impending severe weather. The live coverage
Climate of Minneapolis–Saint Paul
Climate_of_Minneapolis–Saint_Paul
Former Roman Catholic summer campground in Ohio, United States
Materials Company, which took over the plant in 1986, installed civil defense sirens at the camp to warn of any problems at the plant. Despite tests showing
Fort_Scott_Camp
Weather event in Oklahoma, United States
radar, the Tulsa County Emergency Management Agency did not begin civil defense sirens in the area because the National Weather Service did not issue a
2017_Tulsa_tornadoes
Syrian military officer and politician (1926–1993)
Egypt's disastrous defeat. On 5 June at 7:45 Israeli time, with civil defense sirens sounding all over Israel, the IAF launched Operation Focus (Moked)
Salah_Jadid
Cyberattack in the brazilian civil defense system
Secretariat for Civil Protection and Civil Defense, part of the Ministry of Integration and Regional Development (MIDR), confirmed that the "Defesa Civil Alerta"
2026 Brazilian civil defense system false alarm
2026_Brazilian_civil_defense_system_false_alarm
Civil air defense department
The Civil Air Defense Bureau of the National Defense Mobilization Department of the Central Military Commission (CCAD for short) is located in Beijing
Civil Air Defense Bureau (China)
Civil_Air_Defense_Bureau_(China)
Natural disaster in the US
procedures in use since 1966. Additionally, communities began activating civil defense sirens during tornado warnings, and storm spotting via amateur radio networks
1965 Palm Sunday tornado outbreak
1965_Palm_Sunday_tornado_outbreak
Nuclear power plant in Oregon, US
for storage of used nuclear fuel.[citation needed] A number of the civil defense sirens that were originally installed within a 10-mile (16 km) radius of
Trojan_Nuclear_Power_Plant
the original on June 9, 2020. Retrieved January 21, 2020. "City's Civil Defense Sirens Will Be Tested Tomorrow". New York Times. September 16, 1963. p. 30
Glossary of broadcasting terms
Glossary_of_broadcasting_terms
struck the suburban area. Since then, many counties have reinstalled civil defense sirens removed after the Cold War.[citation needed] On March 14, 2008, an
Geography_of_Atlanta
radar, the Tulsa County Emergency Management Agency did not activate civil defense sirens in Tulsa proper as the local National Weather Service forecast office
Tornadoes_of_2017
Extreme weather event in US Upper Midwest and Florida
during the tornado. Despite a tornado warning being issued, Siren's only civil defense siren failed as a result of a lightning strike in April or May. Police
Tornado outbreak of June 18, 2001
Tornado_outbreak_of_June_18,_2001
Tornado outbreak in the central United States
low. This was also the first time in Minnesota state history where civil defense sirens were used for severe weather purposes. Climate of Minnesota List
Tornado outbreak of May 5–8, 1965
Tornado_outbreak_of_May_5–8,_1965
Ongoing COVID-19 viral pandemic in Jordan
walk to buy groceries from local stores from 10 am until 6 pm when civil defense sirens were used to announce the end of when people can go out. For six
COVID-19_pandemic_in_Jordan
Warning sirens made by Federal Signal Corporation
Federal Signal 3T22 and 2T22 are dual-tone, mechanical outdoor warning sirens made by Federal Signal Corporation (formerly Federal Sign and Signal Corporation)
Federal_Signal_3T22/2T22
National hydro-meteorological service of Ukraine
Ukraine responsible for notifing public via FM/AM-radio, TV and civil defense sirens) Current weather and forecast values, chart and maps (as base uses
Ukrainian Hydrometeorological Center
Ukrainian_Hydrometeorological_Center
Outdoor warning sirens
of electronic outdoor warning sirens produced by Federal Signal Corporation beginning in the early 1980s. These sirens were designed to broadcast high-intensity
Federal_Signal_SiraTone
Ukrainian swimmer (born 2002)
the race that the Russo-Ukrainian war made it hard to train, with civil defense sirens interrupting daily activities, including training. He said after
Vladyslav_Bukhov
Emergency population warning system used in Japan
satellite. When there is a civil emergency such as a ballistic missile heading towards Japan, a siren called Civil Protection Siren sounds across loudspeakers
J-Alert
Series of disastrous floods in the Mid-Atlantic States
to river flooding. In West Virginia, residents relied on fire and civil defense sirens to receive warning about the floods, although some people in flood
1985_Election_Day_floods
Israeli air raid shelter
may be located some distance away. Security rooms are based on a 1951 civil defense law that has undergone several revisions. After Israel was attacked
Merkhav_Mugan
is tested by the Emergency Management Agency and the police with civil defense sirens sounding nationwide. 5 May – Great Prayer Day (Store Bededag) is
2023_in_Denmark
Ongoing conflict in the Middle East
3 members of Civil Defense, 2 Lebanese Army soldiers injured". L'Orient Today. 28 April 2026. Retrieved 29 April 2026. "The Civil Defense mourned the martyr
2026_Lebanon_war
DEFENSE AERIENNE ET POUR LA PROTECTION DES POPULATIONS CIVILES). In 1938, at the dawn of World War II, the French government developed civil defense (défense
French_Civil_Protection
Outdoor warning siren and mass notification company
American Signal Corporation (ASC) is an outdoor warning siren and mass notification company in the United States. ASC was founded in 1873 as Biersach
American_Signal_Corporation
Park in Seattle, Washington, United States
remaining Civil Defense towers in the city until 2025 when it was finally removed, erected in 1954 to support a Chrysler Air-Raid Siren. The siren, listed
Northacres_Park
Ongoing armed conflict in West Asia
2026. "NNA: Two paramedics from the Islamic Risala Scout Association – Civil Defense and the Islamic Health Authority have been killed in an airstrike on
2026_Iran_war
Springs, Ky., where, according to the Labor Defense, Negroes are not allowed to live. "Civil War to Civil Rights: Andrew Wade Home Bombing" (PDF). Kentucky
List of sundown towns in the United States
List_of_sundown_towns_in_the_United_States
Visual warning lights fitted to a vehicle
lighting on the car such as hazard lights. They are often used along with a siren system to increase their effectiveness and provide audible warnings alongside
Emergency_vehicle_lighting
CIVIL DEFENSE-SIREN
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CIVIL DEFENSE-SIREN