Chicago's Air Raid Sirens

If a disaster was about to hit Chicago how would the city alert its residents? Well, 112 strategically located air raid sirens are hidden around the city to serve this very purpose. The sirens are tested on the first Tuesday of every month at 10am
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Film by the Chicago Aussie

[@brycejohnson1833]

0:17 that bird will never be the same again...

[@kernalva2484]

Bryce Johnson 😂😂😂

[@EvanLikesCake]

Bryce Johnson LOL

[@blixblox-left]

Bryce Johnson lmao 🤣

[@newtonscamander4510]

Bryce Johnson, You just made my day, thank you, stranger.

[@HunterHunn]

Pour bird 😂

[@Hackerackerackeracker]

What if a tornado hits on the first Tuesday one month?

[@armaniwilliams5752]

The Test Will be postponed And Moved to The Next Good Weather Day.

[@Bluenose352]

Throughout Illinois, I'm not sure if other states do the same, if there are average everyday thunderstorms on the first Tuesday of the month, certain areas will either do a quick 10-15 second run. Other towns, and villages will skip the test. If there's a warning on that day, over certain towns, cities, or villages, the sirens will stay on if there's any rotation noticed by spotters.

[@evelynrose2257]

It always says "this is just a test first." They would say " this is a tornado warning/watch. Do not panic. Get to the nearest shelter." WooooWeeeeeWooooWeeee

[@derpface2238]

They would be fucked

[@War1109]

That actually happened here in Ohio once

[@ForeigNCSGO]

it's strange seeing so many people who haven't heard these, I remember as a kid everyone always getting super excited on Tuesday to hear the sirens haha

[@thebonnevilleof5933]

@Maggie K I hear them every first tuesday of the month. I've also heard the montello 10 pm curfew siren. It's on the fire department in montello. It's a two layer one that has sirens in a full circle.

[@thebonnevilleof5933]

@Maggie K the one in montello is a federal signal 3T22

[@thebonnevilleof5933]

@Maggie K kzbin.info/www/bejne/m32vm6R6hqiSnsU it's pretty creepy hearing it at night when I'm up in Wisconsin.

[@tareqqx]

ForeigN we don’t even have these where I live I never even saw any

[@jay.theoutsider]

I was obsessed with tornadoes and storms when I was younger. It made me real happy

[@pattycarljackson]

Sirens are useful no matter if we have cell phones or not. It’s an easier way of letting thousand of people know all at the same exact time that something is going on. Unlike cell phones we have to actually receive the notification and have to actually read it.

[@pattycarljackson]

Chicago Aussie that’s true but we also don’t pay attention to our phone alerts either or if we ever receive them. I along with others don’t receive reliable alerts on our phones even if we enable this feature. Sirens whether your phone works or not you will hear it and if there is an actual tornado happening nobody is going to ignore it. So sirens will always continue to exist in some form or another at least I hope they do. Technology is unreliable these are way more consistent and reliable.

[@canamx399]

They sound too soft. I know you’re Australian but have you heard an English carter? That’s terrifying and effective.

[@cloudflick2206]

And plus some people have no phones

[@MTBD80]

Was a few weeks ago we had a tornado warning. I was in our local urban park mountain biking. We got the phone notifications first which was one thing, but when the local sirens fired up that's when things got real. Sirens > Cell phone notifications.

[@UncircumedPickle]

Half true cell phones are built to receive certain sounds when there’s an amber alert. It would be cool if cell phones just had a small message like ALERT FIND SHELTER THIS IS NOT A TEST ALERT THIS IS A TEST

[@sanityplays1545]

Chicago has creepy tornado siren

[@Amtrak90222]

Sanity Plays no it's a stack of mentos lol

[@Amtrak90222]

n bo naaahhh it's just an alternate wail tone on a Modulator.

[@theonelonelymoon7977]

Sanity Plays your get use too it

[@sanityplays1545]

Alani Perez I was in Chicago when happen before

[@Mortality_]

_Sanity Plays_ *Thanks, I live there!*

[@mesmer3780]

R.I.P that poor bird's ears

[@CrysisVN]

0:17

[@Engineer9736]

Maybe you can create an ASMR air raid sirene video ;)

[@timegg7289]

Mesmer ASMR now he can't hear ur asmr

[@FluffyWolfLord]

The birbo went deaf

[@BiIboSwaggins]

Ah it's okay birds are known to only live for one day. But what a scary day it must've been...

[@itstimetogo3521]

0:17 The bird says: OH SHIT

[@jakepaulsucks0061]

@Jorge Toledo it's a joke

[@jonahdw611]

I laughed too hard at this

[@raydiantfader]

3:17 seen that clip before and the sound really creeps me out

[@muffinchain783]

Let me guess cuthulu

[@Tc-rn8lh]

THAT 1 BOSS BOI yep

[@derpycres9617]

Siren head~

[@raydiantfader]

this was 2 years ago why did it creep me out? now I like it cause it's mysterious and weird I guess

[@FlyingPotty420]

Siren head

[@hamthehamster1892]

What?! Chicago has a siren that plays on Tuesday of every month?! How the hell didn't I know that--I LIVE in Chicago!

[@hamthehamster1892]

Chicago Aussie they should really revamp their system, then! I live on the far north side of Chicago, about 30 mins away from downtown Chi, and I swear I can't hear these things... I'll be listening for it today!

[@hamthehamster1892]

Chicago Aussie it was very faint but I heard it!

[@nikieats]

I used to live north of Chicago about 40 minutes away and I used to hear them all the time.

[@heegs5565]

I live 2 hours away from Chicago and i can hear them.

[@jacobhertz8044]

johanna rose we do it In Wilmington to

[@PeanutsDadForever]

Chicago gets more fascinating by the video What a great city.

[@watam8]

Except the south side

[@Sammywhammy773]

| Pirate | I disagree bitch

[@watam8]

I live an hour away from the city and I hear the same damn shit about gang members shooting the wrong people and its ON ALL THE TIME.

[@Sammywhammy773]

| Pirate | that's the news for you

[@Lucifye]

too bad its a shit show of crime

[@grw1935]

last place I lived at while I was in Chicago had one of these sirens maybe 150 feet from my window. there was no sleeping in on the first Tuesday of the month. your videos help with my homesickness, thank you! and please keep them coming!

[@Skullteen]

Even with Alerts that people can get on their phones, I still don't see the siren system ever really going away. The reason for this is because a siren warning can be delivered just as quickly and in a multitude of conditions where cellphone or mobile data may not be working such as a power outage caused by a major storm or a major system failure of the cell network. However, you mentioned in your video how in the 1940s, citizens would head for shelter once they hear the sirens and tune the radio for information. This is where I think the age of cell phones will really help. Today people can hear the sirens, get to shelter, and wait for push alerts on their device (of course, assuming the device is working).

[@iluvyurbles]

Also Cellphones can often have Dead Zones, and if you live in a dead zone and you don't get an EAS or Phone alert and they discontinued sirens, then you'd be fucked

[@tunezjunkie87]

I live in MN, and push alerts for severe weather dont' hit my phone sometimes till 3-5 minutes after the sirens blow or longer... They're SO much more reliable.

[@TRXSHxSNIPER]

I have no phone service an I still get warnings ! Also I can still call 911

[@XWierdThingsHappenX]

@@iluvyurbles or if you don't own a phone. You can all so teach pets to go into the shelter when they hear the siren. Or if your phone broke.

[@iluvyurbles]

@@XWierdThingsHappenX this is true, using recording f the make an model, the wild ducks by us fly away when they hear a siren, impacting that they either had a time where it scared one and the rest followed or that pitch in universal for danger

[@ChicagoSirens]

Great video! Gives lots of information to those who know very little of Chicago's air raid siren history.

[@ChicagoSirens]

Chicago Aussie Yup! There's a few older ones still standing. I've been working with my friend Logan on getting all the history of the Chicago system.

[@Nothing-Glooooop]

Chicago Aussie u

[@kmsangs1669]

Why do I have some sort of fear that makes me super uncomfortable and cringe when I hear any kind of warning siren sound? WHY AM I WATCHING THIS??!

[@yeahimridingthroughthearea7565]

Namjoon_Love oof hey army

[@Engineer9736]

Because you are weak

[@lunarbeetlejuice9768]

Probably because that’s it’s intended purpose. No point in building a siren that people won’t have a gut reaction of fear towards, because it usually entails impending danger

[@QueenRosez]

Same. It sends me into a panic. Maybe it's the meaning behind the siren which means : Run or die. 😭

[@libertymadness9812]

Because sirens like that are only set off for coming danger (unless they're checking if they work)

[@WarpedYT]

There is a siren pretty close to my studio, they are really loud. BTW I have some video ideas for you.

[@valrabellkeys9867]

The siren at 0:48 isn't a Chrysler, it was another big siren, I believe if I remember correctly it was called the Big Bertha. Great video though!

[@BFDfire288]

Valtonus You would be correct. That is the "Big Bertha" siren by bell telephone laboratories. It was the predecessor to the more popular Chrysler Victory Siren.

[@Fat2T22]

It was the motherfuckin prototype

[@neonflashsparkotron5435]

Valtonus Those sirens make my ears bleed in horror

[@rosie7640]

i really want to learn more about sirens. Where do you learn these things from?

[@ktmbandit6183]

Valtonus h

[@Cejo871]

Living in Chicago my entire life, I can confirm this.

[@Cejo871]

Chicago Aussie Where do you live in Chicago/Illinois? I'm in the suburbs, Glen Ellyn specifically.

[@Cejo871]

Chicago Aussie this is the first video I've ever seen if yours. But just wondering why do you live in Chicago? And if you want to hang out sometime, just hit me up haha

[@aturtle1448]

AP-Atlas yea

[@aturtle1448]

Chicago Aussie i tottaly agree ( I lived there

[@ToyotaNutjob]

AP-Atlas Aurora!!!

[@phyllishamilton165]

Great video! It reminded me about the sirens -- every week, we would have a drill in my grade school when they sounded! Something I had forgotten! The "duck and cover" days! AND yes, I remember when the Sox won the pennant and the sirens sounded -- everyone was so upset -- especially my Dad, who had been a Civil Defense captain during the war!!!

[@The.Neurotic]

What if theres an attack on a tuesday but everyone disregards it as a test?

[@Bluenose352]

The Neurotic The sirens will continue to run.

[@queencitysirens8755]

They will run ALTERNATE WAIL tone

[@zachmiller9175]

I've lived here my entire life but I still get chills hearing these things. I guess that means they're doing what they're meant to do

[@CrazyDash9]

0:18 siren wails Bird: Ight imma head out

[@ZoeSimza]

I have lived in Chicago my entire life and I never knew this. There was a siren like this right near my high school that used to make noise on, yes, the first Tuesday of every month, but I had no idea what the hell it was.

[@jhendin]

This was all very interesting to me, because I grew up in the near western suburb of Maywood, not far from the city of Chicago itself. Around the years 1961-63 the one that was close to us went off on a daily basis at 5 or 6 PM Monday thru Friday. I remember this because as kids we relied on it to let us know when it was time to go home for dinner. We got out of school at 3, got home at 3:15, greeted our mothers, then went out to play. Once we heard that siren we would all disperse and go home for dinner. It was like clock work. I never knew where that siren was exactly. It seem to come from a north-easterly direction. Regardless, the siren was a part of our growing up in Chicago, and its sound was no more ominous to us than the voices of our mothers calling us home.

[@errorno.1228]

0:17 That bird. " OH HELL, IT'S A NATURAL DISASTER! "

[@Piper-Ileoaw1946]

Oh for crissaaake! I didn't get to see video! I moved away in '96!

[@Gibbyx67]

the 2001 siren is behind you

[@neonflashsparkotron5435]

Scott Gibson OMG hi

[@queencitysirens8755]

Oh, really, I had NO idea

[@transitxan2253]

Could you do a video about the old Chicago Streetcars? That'll be great! I love Chicago's Transportation History!

[@mentirosa8709]

Bird: “Ah. After a long day of hard work, getting enough food for my family, I can finally rest for a peaceful moment” Siren: *So YoU HaVe ChOsEn DEAF*

[@loudrestorations]

3:17 that pitch is called alternate wail, mainly produced by federal signal Modulator models, DSA models, and EOWS models.

[@yummybleach1160]

0:18 bird has left the chat Bird is now deaf

[@harosokman]

So, as a volunteer firefighter, we elected as a town to have our siren sound (in aus) whenever there was an "alert" (meaning a job we go to with lights and sirens). After a survey, it was revealed that for every fire call, the siren helped an average of 0.5 to 1 firefighter to respond per call as they didn't have their pager or phone on them at the time. Considering we only had 30 active fireys, all doing different things, thats more than enough justice. Trust me, sirens work!

[@JCWB_FAMILY]

harosokman

[@sixchambersTTV]

He keeps picking his ear and its giving me an aneurism

[@mydinnar]

he had some little earbuds in and he kept taking them off and putting them back in.

[@Flexan_Dre]

😂😂😂

[@newagederpderp]

It's earplugs

[@makeupfreek1167]

Look closely my love

[@supergoldfish]

I wonder how consistent the testing is across Illinois. I'm from the western suburbs and have heard these sirens all throughout my life on the first Tuesday, and I noticed that even in Champaign-Urbana they also have their testing on the first Tuesday. I'm sure it's a bit spooky to hear if you're from out-of-state or an international student at UIUC.

[@eastcoastalerting]

It is called alternate wail

[@1Hope4All]

This still happens in Chicago. Not once a month. But once a *Week!* Every single freaking week! It's at 10:00 in the morning. I remember when it was at 10:30am.

[@Piper-Ileoaw1946]

They DON'T want anyone to know! I was terrified EVERY TUESDAY! 😂

[@AndrewMooreAUS]

Thanks Jack. Can you do a video about the water cribs out on the Lake?

[@AndrewMooreAUS]

we have a double kayak which could be interesting way to travel out there

[@robloxnoob8053]

XD 0:18 IT SCARED THE BIRD XD

[@MagicofKeelanWendorf]

I never knew this! This is so cool!

[@USMC_BABE38]

The Magic of Keelan Wendorf bird vs siren bird goes death

[@dalegillett8171]

Remember back going to elementary school in Chicago, the sirens were tested every week about 10:45 during recess in 1950s and early 60s in case of an attack. Called air raids.

[@SouthFLExpressLanes]

3:16 why alternate wail that sounds so creepy

[@ShockInazuma]

DRDOG101 it’s siren head bois

[@krakenytcr5223]

ShockDragon Δ it’s a federal signal

[@fuhwurd]

ShockDragon Δ dont, siren head is an embarrassment to the siren community

[@SouthFLExpressLanes]

@@ShockInazuma it is its dumb.

[@dasreicht]

For extra context on that 138db: Every 10dB increase feels twice as loud. 95db+ is where your hearing gets damaged. 105dB - chainsaws are around this loud for users 115dB - is a rock concert 125dB - is physically painfull 135dB - above this level you will almost instantly damage your hearing permenantly upon exposure 138dB - this siren

[@jameskaiser3720]

0:17 The bird is deaf...

[@dannyjacob5002]

James Kaiser rip

[@garrickroemer5490]

Where I live, we only have volunteer firefighters. We get a tornado siren whenever we need firefighters or there is a real tornado or other event. We refer to it as a “fire siren” but it really freaks out people who don’t normally come here.

[@bandz6384]

3:18 is that sound on drugs

[@dannyjacob5002]

No it's those stupid ATI's

[@heatherhughes9440]

@@dannyjacob5002 it's a freaking modulator

[@mjt777x8]

@@dannyjacob5002 stop calling ati stupid you must be grateful although its breakable and cheap idiot

[@mjt777x8]

The modulators in Chicago's siren system run on the noticeably different and somewhat off-putting Alternate Wail tone during tornado warnings, often mistaken for being broken. Recordings of the siren have been uploaded to KZbin, with the videos reaching millions of views. Many people refer the Modulator as the "Chicago Siren" or the "Scary Tornado Siren" due to the unsettling nature of the tone.

[@konnorrockkonnoisseur4970]

No. That’s actually Siren head mimicking it

[@yeahokaycoolcool]

I live in MO where we have monthly tests of our tornado sirens every Wednesday. Near KCMO, we don't have enough. I rarely hear them (if ever), whereas my parents house is located rather close to one and the test can be heard every Wednesday at about 11 AM. I think more should be installed where necessary in addition to mobile alerts. It needs to be noisy everywhere so we know what the hell is going on.

[@sirensofneohio3979]

P-50 are now the loudest siren that are still in use. (I think)

[@deaderthandead1182]

Windshield Baller nope,thunderbolt 1000's,and ACA Hurricane 130's.

[@alabamasirens2864]

Mr. Green your wrong bud

[@deaderthandead1182]

AlabamaSirens But they have blowers.

[@soapie-]

The ACA P-50 Has 135 DBs the Hurricane has 130, and the Tbolt has 127.

[@Elizabeth-ts4om]

The P-50 isn’t being made anymore, but there are still quite a few around. It is currently the loudest dual toned siren to ever be produced. The T-135 AC/DC is the loudest single toned siren currently in production

[@catonawavewave]

3:14 the siren is just a federal signal alternate wail signal.

[@EpicnessRobloxian]

Another awesome video! Can you please do a video about how the Chicago river was reversed, or about the water taxis?

[@ShannonLH1108]

as a former Chicagoan now residing in Phx since 2008, the sound of the siren in this video seriously triggered such anxiety. I survived the Plainfield Tornado in 1990 and had many other close calls over the years. I am deathly afraid of tornadoes!

[@alexg7705]

Great video! I suggested this last video! Thanks for the shoutout!

[@torque395]

About that Chrysler siren - it's range was (up to) 25 miles instead of 2.5....absolutely nuts!

[@yallhearsumn6398]

first 3 seconds if horn playing me: "ok its childish gambino"

[@saudade2100]

My town had an air raid system for the same reason. The only realy time it was used, was to announce "no school". If a winter snowstorm was bad enough, they would run the air raid sirens. The storm would have to be particularly bad, but it was used. So yeah, as a little kid, we used to love hearing the air raid sirens in the winter, it meant no school and play in the snow.

[@guido7095]

how do the sirens smell like?

[@tristonsistare475]

Chicago Aussie lit

[@razrramonel4077]

Although I do not live in Chicago, (Illinois), in Louisville, (Kentucky) the tornado sirens are tested on the 2nd Tuesday of every month, for 3 minutes, weather permitting. The Siren System has the ability to tell on itself if any of the 120+ tornado sirens fail to activate, or fail in any other way.

[@connect2437]

In Indiana we get it weekly on fridays lol

[@jasasj1390]

Michigan is the first saturday of every month

[@rojo9031]

Here where I live it’s every Saturday at noon

[@tracyhowden5238]

0:18. Great job YOU SCARED THE BIRD!! I have an addiction to birds, I'm sorry

[@polymetric2614]

username checks out

[@jakeruff7428]

You should do a video about Old Chicago, an Indoor amusement park in Bolingbrook which existed for just five years from 1975 to 1980. Despite this short time of operation it still has a great deal of nostalgia with people who had visited there. My parents tell me stories of fun times with family and friends there. It seems like an interesting topic that every Chicagoan knows of, but little about.

[@Piper-Ileoaw1946]

Oh hey! I WENT there once! I was 13! And on a "date" hahaha!

[@chezy6543]

siren head...

[@jilphones6662]

In Columbus, OH, it is every siren in the whole county, every Wednesday at Noon, every week of the entire year, every year. These are mainly tornado sirens as we usually get at least two or three tornado warnings each year and have actually had a few real tornados.

[@logandehaven8537]

the chicago siren sounds like hell is coming

[@hugezoey7074]

Idk why, but I love the sound of these kind of sirens. It gives me comfort. It's probably because I live in a small neighborhood and I live near the fire station (where the siren is located).

[@aclevername4517]

I live in a small town and we have our own tornado siren at the golf course for whatever reason. It goes off for a test every Wednesday.

[@southwesternpasirens]

The old Cold War era sirens consisted of model 5’s lots of thunderbolts, super sirex, STL 10s, and 5 Chrysler’s most sirens which have been removed

[@ejnevermisses]

0:18 I FEEL SO BAD FOR THAT BIRD. IT WAS ON THAT LOUD SIREN AS IT WENT OFF. IT MUST OF BEEN SOOOO SCARED. 🤣

[@zednik4hart]

What if you paused it and it kept going

[@theotherdave8013]

Where i live, we still have air raid sirens. Of course they renamed them to just alert stations/sirens and included weather warnings etc. We had good ole reliable thunderbolts that you could hear from one side of town to the other, now though, we have these wimpy high pitched, annoying things that once you shut your window, you dont hear them. Its a weird thing. We have the tech for warning our citizens of dangers. However, if the cell towers fail and we loose power, we are STILL reliant on our own two eyeballs. Heh usually people get the clue with a cell looses connection and or power goes out but..ya never know anymore.

[@BellyLover06]

Can confirm as I used to live in Waukegan, where they did have an air raid siren sound at 10AM 1st Tuesday of the month. As a kid, that always scared me.

[@elevatormaniacgames]

My home town. In the chicagoland area, it still seems they do testing at 10:00 on tuesdays but once every month.

[@pollyg562]

i live in Perth WestAustralia and I've lived in every corner, and I've noticed these sirens and the one thing I've always noticed is its ALWAYS on a Tuesday morning

[@seanjuth]

hey just to let you know the variable pitch is called the fire signal and the siren is producing the sound It's basically a hi lo wailing signal

[@Amtrak90222]

sean juth Aka Alternate wail.

[@ropaulsen]

The reason they still have the civil defense sirens is because due to an event of a serious power outage where your cell phone towers would not necessarily have power all of the civil defense Sirens are on a backup power source so when they set them off they will go off.

[@Ardeact]

Wtf why did they change the Air-Raid sound? Now it sounds like something that belongs to a Silent Hill game.

[@bradym340]

Man it's a whole reassuring feeling hearing an aussie voice

[@BHV0810]

I love when you give Chicago history in your videos! Keep it up!

[@iowansirenrecordings2454]

1:25 omg a brand new sterling m10

[@caishenmall]

Me: *wails like a air raid siren* Bird: Oh I hear the siren, Outta here.

[@BriansArtforAnimals]

even people that have lived here for 30-40 years still ask every Tuesday..what's that sound?.. its unreal.

[@sugama246]

I live on the Southside and I still hear them today. Their sound are faint from where I am. However, it’s almost as if they have the sirens go off around Spring for its near tornado season. I never heard them during the winter though.

[@VazDraeStudios]

Here in the Midwest US, especially in Wisconsin, every municipality has sirens. We just call them tornado sirens as that's their main purpose. And as far as the mobile alert goes and sirens not being needed, I haven't gotten most of the alerts to my phone for some reason, only occasionally will I get those alerts, plus if you don't have service, you may not get it... so sirens are still pretty important in my book.

[@AwesomeDesertTrains]

rest in peace tucson arizona which had the most legendary siren the FS ThunderBolt T1000

[@theminecraftaxolotl3367]

Siren: EEeH Bird: IGHT IMA HEAD OUT

[@jncook54]

Every Tuesday. We always referred to them at tornado warnings. Never really thought about the other potential reasons to test them.

[@cuntdork]

Every small town I've lived in had these sirens that go off on the first Tuesday every month. In a small Iowa town I own a house in, they even use them during a fire to get the firefighters to the station because the town was so small they didn't have living quarters.

[@xYoungExodus]

These are in my small town about 40 minutes away from Chicago. I didn't know they had the EXACT ones in Chicago. I thought that was cool.

[@zzzaccounting5924]

It's not just Chicago, sirens are tested all over Illinois the same day and time every month

[@forceawakens4449]

There are the simaler sirens at my town about 4 hours away from Chicago that are tested at the same time on the same day

[@RoxBloxMinecraft]

In Wisconsin, we have those tested every saturday at noon for Tornadoes. We call them Tornado sirens. (Creative name right)

[@ntatenarin]

Wild how I never see them, yet I hear them all the time, like right now with the storms coming. I need to look up more!

[@KylaTea]

Man I’m so used to it lol we have some still by my house that test regularly. One day something is going to happen and I’m gonna think it’s just them testing the system.

[@F_Arsenault45]

I live near a siren in Chicago. So I live in the west lawn neighborhood and I live 3 blocks away from the Hubbard high school field. There is a siren at one of the sidewalks.

[@izzymarie8987]

I'm from MN and I used to live right up the street from a siren. The first Wednesday of the month were always interesting.

[@PanduPoluan]

With people today relying so much on their cellphones, the first target of an enemy actor would be the cellular network. With that down, people outside the sirens' range won't receive an alert, and they will die.

[@jonathantan2469]

Madison, WI also has emergency sirens. They're more for tornado alerts.

[@sinsational6846]

I'm from Chicago and I would hear these all the time especially during curfew hours which is around 10 o'clock

[@jacobpham4220]

0:57 this is called the Chrysler victory bell And the siren at the start of the video is a 2001 DC or a 130

[@cayleemorgan7780]

you have taught me alout about this stuff because i get confused about what sirens mean in diffrent pitches THANK YOU!

[@rockheadregolith8325]

I remember this sound happening every Tuesday @ 1030 hours growing up in Chicago.

[@FlyingPigMD]

This first time I heard this when I was younger I almost crapped my pants. I had overslept and this woke me up. I went outside half dressed and looked up looking for any sign of attack. I looked it up and laughed afterwards.