Moderate mag. 4.3 earthquake - Off Coast OF Bio-Bio, Chile, on Sunday, Sep 27, 2026, at 04:14 am (Universal Time)

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The depth of the quake could not be determined, but is assumed to be shallow.The quake was not felt (or at least not reported so).Quake Data | Interactive map | User reports | Aftershocks | Earlier quakes here | Quakes in Chile | Region del Biobio | Region de la Araucania | Region de NubleHint: Click on the image to see different maps of this quake!Moderate magnitude 4.5 earthquake at unknown depth27 Sep 04:19 UTC: First to report: EMSC after 5 minutes.27 Sep 04:30: Epicenter location corrected by 32 km (20 mi) towards ESE.27 Sep 04:35: Now using data updates from USGSI didn't feel itI felt this quakeEarthquake detailsDate & timeSep 27, 2026 04:14:44 UTC - Local time at epicenterSunday, Sep 27, 2026, at 04:14 am (Universal Time GMT +0)Statusconfirmed (manually revised)Magnitude4.50Depth10 kmEpicenter latitude / longitude37.1357°S / 75.1898°WChileSeismic antipode37.1357°N / 104.8102°EChinaQuality19 seismic stationsShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceUSGS (United States Geological Survey)Weather at epicenter at time of quakeScattered Clouds 13.5°C (56 F), humidity: 87%, wind: 4 m/s (8 kts) from NWEstimated seismic energy released3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 tons of TNT) | equivalent to ONE quake of magnitude 4.5 | about seismic energy22 minutes ago reported feltSep 27, 2026 04:14 GMT / Sep 27, 2026 04:14 am (Universal Time)Lat / Lng: -37.1357 / -75.1898: 145 km WNW of Lebu, ChileSource: USGSOther sources: CSN: 4.3 / 10 km, RaspberryShake: 4.3 / 10 km, 1 more...Detail info | Read user reports | You felt it? - Report it!';storedMarkers.push(['quake-23393752',-37.13570,-75.18980,'22 minutes ago: Mag. 4.5, 145 km WNW of Lebu, Chile',html,'quakes-6-24.png',25,25,12,12,125]); function mkRep(id,notFelt){var nFelt=notFelt||false;var src="https://www.volcanoesandearthquakes.com/app/earthquake-report.php?quakeId="+id;if(nFelt==true){src+="&notFelt=true";}window.open(src,"","status=0,toolbar=0,location=0,directories=0,menubar=0,resizable=1,scrollbars=1,height=400,width=350");} function locationHashChanged(e){-1!=e.oldURL.indexOf("#popupMap")&&closePopup()} window.onhashchange = locationHashChanged; function comment(e){var t=e.parentNode,a=(t.dataset.id,document.getElementById("commentForm"));"none"==a.style.display?(t.appendChild(a),a.style.display="block"):a.style.display="none"}function sendComment(e){var t=e.parentNode,a=t.parentNode.dataset.id,n=document.getElementById("commentContent"),p=n.value.trim();if(p){var o="id="+a+"&quakeId="+thisQuakeId;o+="&comment="+decodeURIComponent(p),mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",o,function(e){e.responseText;alert("Thank you for submitting your comment!"),t.style.display="none",n.value=""})}}function flagReport(e){var t=e.parentNode.dataset.id;if(confirm("Report this as inappropriate?")){var a="id="+t+"&quakeId="+thisQuakeId+"&flagAsInappropriate=1";mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",a,function(t){var a=t.responseText;alert(a),e.style.display="none"})}}function likeReport(e){var t="id="+e.parentNode.dataset.id+"&quakeId="+thisQuakeId+"&like=1";mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",t,function(t){t.responseText;e.style.opacity=.5})}]]>[smaller] [bigger]Most recent quakes Top 20 past 24 hrs Quakes in ChileNearby placesThe closest larger town where the quake might have been felt is Lebu, a town with 22,000 inhabitants in Chile, in 146 km (90 mi) distance east of the epicenter. People likely experienced very weak shaking there. In the capital of  Chile, Santiago, 581 km (361 mi) away from the epicenter, the earthquake could not be felt.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry146 km (90 mi)E of epicenterLebu(pop: 22,300)II: Very weakArauco, Region del BiobioChile162 km (101 mi)E of epicenterLos Alamos(pop: 19,500)II: Very weakArauco, Region del BiobioChile166 km (103 mi)E of epicenterArauco(pop: 24,700)II: Very weakRegion del BiobioChile168 km (104 mi)E of epicenterCuranilahue(pop: 32,000)II: Very weakArauco, Region del BiobioChile175 km (109 mi)SE of epicenterCañete(pop: 20,200)II: Very weakArauco, Region del BiobioChile176 km (109 mi)SE of epicenterCanete(pop: 31,800)II: Very weakArauco, Region del BiobioChile180 km (112 mi)E of epicenterLota(pop: 47,300)II: Very weakConcepcion, Region del BiobioChile182 km (113 mi)E of epicenterCoronel(pop: 107,800)II: Very weakConcepcion, Region del BiobioChile189 km (117 mi)E of epicenterSan Pedro de la Paz(pop: 121,600)II: Very weakConcepcion, Region del BiobioChile190 km (118 mi)E of epicenterTalcahuano(pop: 150,500)II: Very weakConcepcion, Region del BiobioChile193 km (120 mi)E of epicenterConcepcion(pop: 223,600)II: Very weakConcepcion, Region del BiobioChile193 km (120 mi)E of epicenterChiguayante(pop: 84,700)II: Very weakConcepcion, Region del BiobioChile200 km (124 mi)E of epicenterPenco(pop: 46,100)II: Very weakConcepcion, Region del BiobioChile201 km (125 mi)E of epicenterHualqui(pop: 24,300)II: Very weakConcepcion, Region del BiobioChile207 km (129 mi)E of epicenterTome(pop: 53,200)II: Very weakConcepcion, Region del BiobioChile226 km (141 mi)E of epicenterNacimiento(pop: 26,500)II: Very weakBiobio, Region del BiobioChile230 km (143 mi)E of epicenterAngol(pop: 44,900)II: Very weakProvincia de Malleco, Region de la AraucaniaChile233 km (145 mi)E of epicenterCoelemu(pop: 15,700)II: Very weakItata, Region de NubleChile245 km (152 mi)E of epicenterQuillon(pop: 17,500)II: Very weakDiguillin, Region de NubleChile247 km (154 mi)E of epicenterCabrero(pop: 27,600)II: Very weakBiobio, Region del BiobioChile250 km (155 mi)SE of epicenterCarahue(pop: 24,400)II: Very weakProvincia de Cautin, Region de la AraucaniaChile254 km (158 mi)E of epicenterLos Angeles(pop: 125,400)II: Very weakBiobio, Region del BiobioChile254 km (158 mi)SE of epicenterTraiguen(pop: 17,200)II: Very weakProvincia de Malleco, Region de la AraucaniaChile260 km (161 mi)E of epicenterCollipulli(pop: 23,300)II: Very weakProvincia de Malleco, Region de la AraucaniaChile266 km (165 mi)SE of epicenterNueva Imperial(pop: 29,400)II: Very weakProvincia de Cautin, Region de la AraucaniaChile268 km (167 mi)E of epicenterMulchen(pop: 27,600)II: Very weakBiobio, Region del BiobioChile277 km (172 mi)SE of epicenterTeodoro Schmidt(pop: 15,500)II: Very weakProvincia de Cautin, Region de la AraucaniaChile278 km (173 mi)E of epicenterChillan Viejo(pop: 28,700)II: Very weakDiguillin, Region de NubleChile280 km (174 mi)SE of epicenterVictoria(pop: 32,400)II: Very weakProvincia de Malleco, Region de la AraucaniaChile281 km (175 mi)E of epicenterChillan(pop: 150,400)II: Very weakDiguillin, Region de NubleChile286 km (178 mi)E of epicenterVilla Mercedes(pop: 131,900)II: Very weakRegion del BiobioChile287 km (179 mi)NE of epicenterCauquenes(pop: 38,500)II: Very weakRegion del MauleChile287 km (179 mi)SE of epicenterLautaro(pop: 34,300)II: Very weakProvincia de Cautin, Region de la AraucaniaChile289 km (179 mi)SE of epicenterTemuco(pop: 238,100)II: Very weakProvincia de Cautin, Region de la AraucaniaChile290 km (180 mi)SE of epicenterPadre Las Casas(pop: 72,900)II: Very weakProvincia de Cautin, Region de la AraucaniaChile299 km (186 mi)E of epicenterSan Carlos(pop: 31,500)II: Very weakPunilla, Region de NubleChile343 km (213 mi)SE of epicenterValdivia(pop: 133,400)I: Not feltRegion de los RiosChile352 km (219 mi)NE of epicenterLinares(pop: 69,500)I: Not feltRegion del MauleChile370 km (230 mi)NE of epicenterTalca(pop: 197,500)I: Not feltRegion del MauleChile581 km (361 mi)NE of epicenterSantiago(pop: 4,837,300)I: Not feltSantiago MetropolitanChileNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quake (1)So far, we have received 1 report for this quake. This section is being updated as new data comes in.User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.Translate349.2 km ENE of epicenter [Map] / not felt (reported through our app)What is Intensity and the Mercalli Intensity Scale?The amount of shaking that occurs on the surface due to an earthquake is called the intensity. It is commonly measured on the so-called Modified Mercalli Intensity Scale (MMI) ranging from 1 (not felt) to 10 (extreme shaking), and given in Roman numerals as I,II,...IX, X, and often displayed with color codes ranging from light blue to dark red.Earthquake intensity depends mainly on the magnitude and depth of the quake as well as the distance from the epicenter: The further away, the less shaking intensity occurs.Read more about the MMI scale!Number of reports by intensityShaking intensityNumber of reportsMin-Max distance from epicenter (*)Average distance (*)I: Not felt1349–349 km (217–217 mi)349 km (217 mi)Notes(*) Reports are filtered to exclude those that are likely highly inaccurate or esaggerated.Only reports with latitude/longitude coordinate positions given (1 in total) could be used for geographic statistics.Get the Android appCompare Quake DataData for the same earthquake as reported by different agenciesThe more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.MagDepthTime GMT2026-09-27EpicenterAgency4.510 km6.2 mi(*)04:14:44.454145 km WNW of Lebu, ChileUSGS (United States Geological Survey)4.310 km6.2 mi(*)04:14:49125 km al O de Lebu23 km (14 mi) epicenter difference with USGSCSN (National Seismological Center (Centro Sismológico Nacional))4.310 km6.2 mi(*)04:14:49Off Coast of Central Chile23 km (14 mi) epicenter difference with USGSRaspberryShake (RaspberryShake)4.310 km6.2 mi(*)04:14:49OFF COAST OF BIO-BIO, CHILE23 km (14 mi) epicenter difference with USGSEMSC (European-Mediterranean Seismological Centre)Notes:(*) A depth given as 10 km often means that the the depth of the quake could be not determined with sufficient accuracy.Aftershocks for this quakeNo aftershocks have been recorded so far. When aftershocks are detected, we will update this section.What are aftershocks?Larger earthquakes (above magnitude 5 or so) such as this one are usually followed by smaller ones known as aftershocks that occur in the same area during the days, weeks, months or even years after the main shock.[More info]What about this quake?Based on its magnitude, the fault that was active during the quake likely ruptured beneath a surface area of approximately 3 km2 (1 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 3 km (2 mi).[More info]Recorded aftershocks, latest first (0 quake)Sep 27, 2026 04:14 am (Universal Time)22 minutes ago4.510 km0 km - This quake145 km WNW of Lebu, ChileMain Shock (this quake)MoreMap of aftershocksPrevious quakes in the same area of this earthquake22 minutes ago reported feltSep 27, 2026 04:14 GMT / Sep 27, 2026 04:14 am (Universal Time)Lat / Lng: -37.1357 / -75.1898: 145 km WNW of Lebu, ChileSource: USGSOther sources: CSN: 4.3 / 10 km, RaspberryShake: 4.3 / 10 km, 1 more...Detail info | Read user reports | You felt it? - Report it!',4.5,45, '#bb202a', 0.9,1.5, '#bb202a', 0.27);map2.addToMap('thisQuake',-37.1357,-75.1898,'22 minutes ago: Mag. 4.5, 145 km WNW of Lebu, Chile','Earthquake: Mag 4.5 / 10 km (6.2 mi) depth22 minutes ago reported feltSep 27, 2026 04:14 GMT / Sep 27, 2026 04:14 am (Universal Time)Lat / Lng: -37.1357 / -75.1898: 145 km WNW of Lebu, ChileSource: USGSOther sources: CSN: 4.3 / 10 km, RaspberryShake: 4.3 / 10 km, 1 more...Detail info | Read user reports | You felt it? - Report it!','default'); // this will be local to this table obj function putQuakeOnMap(id,lat,lon,time,title,html,mag,zIndex) { qTableOlder.putQuakeOnMap(id,lat,lon,time,title,html,mag,zIndex); } map2.circleScale=0.5;qTableOlder.usePalette=1;qTableOlder.startVal=qTableOlder.referenceTime-(80*365.25*86400);qTableOlder.endVal=qTableOlder.referenceTime; qTableOlder.assignMap(map2); (async function(){await new Promise(r => setTimeout(r,4000));map2.map.setZoom(7)})(); })(); (function(){let done=false;async function loadPrevious(){if(done)return;done=true;while(typeof mkRequest=="undefined")await new Promise(r=>setTimeout(r,500));mkRequest("https://server2.allquakes.com/api/getPrevious.php?quakeId=23393752","get","",function(httpObj){let r=httpObj.responseText,d=document;if(""!=r&&200==httpObj.status){let o=JSON.parse(r);if(!o){let s=d.getElementById("olderQuakesSection");if(s)s.remove();return};let table=d.getElementById("qTableOlder");if(!table)return;table.innerHTML+=o.tableRows,qTableOlder.alternateBg();let ph=d.getElementById("placeholder_largestQText");if(ph)ph.innerHTML=o.html;let wrap=d.getElementById("sectionPreviousCWrap");if(wrap)wrap.style.display="";eval(o.js)}})}let d=document,target=d.getElementById("sectionPreviousCWrap")||d.getElementById("placeholder_largestQText")||d.getElementById("qTableOlder");if(!target||!("IntersectionObserver" in window)){loadPrevious();return}let obs=new IntersectionObserver(function(entries){if(entries.some(e=>e.isIntersecting)){obs.disconnect();loadPrevious()}},{rootMargin:"300px 0px"});obs.observe(target)})();]]>