Moderate magnitude 4.0 earthquake at unknown depth20 Sep 23:27 UTC: First to report: EMSC after 4 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeSep 20, 2025 23:23:53 UTC - Local time at epicenterSaturday, Sep 20, 2025, at 11:23 pm (Universal Time GMT +0)Statuspreliminary (automatic detection)Magnitude4.0Depth10 kmEpicenter latitude / longitude19.35°S / 69.12°WProvincia de Iquique, Tarapacá, ChileAlso near: Bolivia 39 km (24 mi) awaySeismic antipode19.35°N / 110.88°EShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoCerro Tatajachura (17 km / 11 mi)Estimated seismic energy released6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 tons of TNT) | equivalent to ONE quake of magnitude 4.0 | about seismic energy4 minutes agoSep 20, 2025 23:23 GMT / Sep 20, 2025 11:23 pm (Universal Time)Lat / Lng: -19.35 / -69.12: Tarapaca, ChileSource: EMSCDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22187012',-19.35000,-69.12000,'4 minutes ago: Mag. 4.0, Tarapaca, 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+="¬Felt=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 Huara, a town with 2,700 inhabitants in Chile, in 99 km (62 mi) distance southwest of the epicenter. People likely experienced very weak shaking there. Many smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry30 km (19 mi)SW of epicenterSotoca(pop: 49)III: WeakProvincia del Tamarugal, TarapacáChile32 km (20 mi)W of epicenterCamina(pop: 1,250)III: WeakProvincia del Tamarugal, TarapacáChile35 km (22 mi)NW of epicenterNama(pop: 44)III: WeakProvincia del Tamarugal, TarapacáChile47 km (29 mi)W of epicenterFrancia(pop: 62)III: WeakProvincia del Tamarugal, TarapacáChile49 km (30 mi)S of epicenterLimaxiña(pop: 64)III: WeakProvincia del Tamarugal, TarapacáChile51 km (32 mi)E of epicenterColchane(pop: 1,730)III: WeakProvincia del Tamarugal, TarapacáChile63 km (39 mi)NW of epicenterEsquiña(pop: 54)II: Very weakArica, Region de Arica y ParinacotaChile66 km (41 mi)SW of epicenterPachica(pop: 168)II: Very weakProvincia del Tamarugal, TarapacáChile76 km (47 mi)SW of epicenterTarapaca(pop: 121)II: Very weakProvincia del Tamarugal, TarapacáChile81 km (50 mi)S of epicenterMamiña(pop: 319)II: Very weakProvincia del Tamarugal, TarapacáChile87 km (54 mi)NW of epicenterCamarones(pop: 66)II: Very weakArica, Region de Arica y ParinacotaChile90 km (56 mi)NW of epicenterTimar(pop: 57)II: Very weakArica, Region de Arica y ParinacotaChile99 km (62 mi)SW of epicenterHuara(pop: 2,730)II: Very weakProvincia del Tamarugal, TarapacáChile110 km (68 mi)SW of epicenterBaquedano(pop: 587)II: Very weakProvincia del Tamarugal, TarapacáChile113 km (70 mi)W of epicenterCuya(pop: 166)II: Very weakArica, Region de Arica y ParinacotaChile118 km (73 mi)W of epicenterPisagua(pop: 443)II: Very weakProvincia del Tamarugal, TarapacáChile123 km (76 mi)SW of epicenterPozo Almonte(pop: 15,700)II: Very weakProvincia del Tamarugal, TarapacáChile123 km (77 mi)SW of epicenterLa Tirana(pop: 1,530)II: Very weakProvincia del Tamarugal, TarapacáChile129 km (80 mi)S of epicenterPica(pop: 9,300)II: Very weakProvincia del Tamarugal, TarapacáChile136 km (85 mi)N of epicenterPutre(pop: 2,770)II: Very weakParinacota, Region de Arica y ParinacotaChile144 km (90 mi)SW of epicenterIquique(pop: 191,500)II: Very weakTarapacáChile145 km (90 mi)SW of epicenterAlto Hospicio(pop: 108,400)II: Very weakProvincia de Iquique, TarapacáChile150 km (93 mi)S of epicenterColonia Pintados(pop: 143)II: Very weakProvincia del Tamarugal, TarapacáChile158 km (98 mi)NW of epicenterArica(pop: 221,400)II: Very weakRegion de Arica y ParinacotaChile162 km (101 mi)SW of epicenterLos Verdes(pop: 216)II: Very weakProvincia de Iquique, TarapacáChile165 km (102 mi)S of epicenterOficina Victoria(pop: 83)II: Very weakProvincia del Tamarugal, TarapacáChile180 km (112 mi)SW of epicenterPlaya Quinteros(pop: 20)II: Very weakProvincia de Iquique, TarapacáChile182 km (113 mi)NW of epicenterLos Palos(pop: 207)I: Not feltTacna, TacnaPeru188 km (117 mi)SW of epicenterChanavayita(pop: 603)I: Not feltProvincia de Iquique, TarapacáChile191 km (118 mi)NW of epicenterTacna(pop: 286,200)I: Not feltTacnaPeru193 km (120 mi)NW of epicenterCalana(pop: 875)I: Not feltTacna, TacnaPeru194 km (121 mi)NW of epicenterLos Olivos(pop: 484)I: Not feltTacna, TacnaPeru221 km (137 mi)NW of epicenterEl Huayco(pop: 30)I: Not feltTacna, TacnaPeruNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quakeThere are no user reports for this quake yet.If you felt it, be the first to report it!Compare 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 GMT2025-09-20EpicenterAgency4.010 km6.2 mi(*)23:23:53TARAPACA, CHILEEMSC (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 1 km2 (0 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 2 km (1 mi).[More info]Recorded aftershocks, latest first (0 quake)Sep 20, 2025 11:23 pm (Universal Time)4 minutes ago4.010 km0 km - This quakeProvincia de Iquique, Tarapacá, ChileMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 25 years and our earthquake archive back to 1900, there are about 349 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.02 quakes per year (or 1 quake every 62.5 years)Mag. 6 or higher: 0.1 quakes per year (or 1 quake every 10.4 years)Mag. 5 or higher: 3.4 quakes per yearMag. 4 or higher: 36.2 quakes per year (or 3 quakes per month)Mag. 3 or higher: 162 quakes per year (or 13.5 quakes per month)Mag. 2 or higher: 347 quakes per year (or 28.9 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 2 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 60 to 65 years.Number of quakes per yearPrevious quakes in the same area of this earthquake