Moderate magnitude 4.4 earthquake at 123 km depth28 Sep 05:29 UTC: First to report: EMSC after 4 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeSep 28, 2025 05:25:43 UTC - Local time at epicenterSunday, Sep 28, 2025, at 05:25 am (Universal Time GMT +0)Statuspreliminary (automatic detection)Magnitude4.4Depth123 kmEpicenter latitude / longitude21.22°S / 68.76°WProvincia de El Loa, Region de Antofagasta, ChileAlso near: Bolivia 40 km (25 mi) awaySeismic antipode21.22°N / 111.24°EShaking intensityII Very weak shakingFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoAucanquilcha (30 km / 19 mi)Estimated seismic energy released2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 tons of TNT) | equivalent to ONE quake of magnitude 4.4 | about seismic energy4 minutes agoSep 28, 2025 05:25 GMT / Sep 28, 2025 05:25 am (Universal Time)Lat / Lng: -21.22 / -68.76: Antofagasta, ChileSource: EMSCDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22210463',-21.22000,-68.76000,'4 minutes ago: Mag. 4.4, Antofagasta, 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 Quillagua, a town with 141 inhabitants in Chile, in 94 km (58 mi) distance southwest of the epicenter. People likely experienced very weak shaking there. Several 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(*)RegionCountry45 km (28 mi)NW of epicenterHuatacondo(pop: 55)II: Very weakProvincia del Tamarugal, TarapacáChile52 km (33 mi)E of epicenterOllagüe(pop: 134)II: Very weakProvincia de El Loa, Region de AntofagastaChile94 km (58 mi)SW of epicenterQuillagua(pop: 141)II: Very weakProvincia de Tocopilla, Region de AntofagastaChile100 km (62 mi)NW of epicenterPica(pop: 9,300)II: Very weakProvincia del Tamarugal, TarapacáChile107 km (66 mi)NW of epicenterColonia Pintados(pop: 143)II: Very weakProvincia del Tamarugal, TarapacáChile107 km (67 mi)NW of epicenterOficina Victoria(pop: 83)II: Very weakProvincia del Tamarugal, TarapacáChile136 km (84 mi)NW of epicenterLa Tirana(pop: 1,530)II: Very weakProvincia del Tamarugal, TarapacáChile136 km (85 mi)N of epicenterMamiña(pop: 319)II: Very weakProvincia del Tamarugal, TarapacáChile139 km (86 mi)S of epicenterCalama(pop: 165,700)II: Very weakProvincia de El Loa, Region de AntofagastaChile147 km (92 mi)W of epicenterRio Seco(pop: 145)II: Very weakProvincia de Iquique, TarapacáChile151 km (94 mi)NW of epicenterPozo Almonte(pop: 15,700)II: Very weakProvincia del Tamarugal, TarapacáChile156 km (97 mi)SW of epicenterMaria Elena(pop: 4,900)II: Very weakProvincia de Tocopilla, Region de AntofagastaChile159 km (99 mi)NW of epicenterBaquedano(pop: 587)II: Very weakProvincia del Tamarugal, TarapacáChile159 km (99 mi)W of epicenterChanavayita(pop: 603)II: Very weakProvincia de Iquique, TarapacáChile170 km (105 mi)NW of epicenterLos Verdes(pop: 216)II: Very weakProvincia de Iquique, TarapacáChile172 km (107 mi)NW of epicenterHuara(pop: 2,730)II: Very weakProvincia del Tamarugal, TarapacáChile175 km (109 mi)NW of epicenterAlto Hospicio(pop: 108,400)II: Very weakProvincia de Iquique, TarapacáChile177 km (110 mi)SW of epicenterTocopilla(pop: 24,500)II: Very weakRegion de AntofagastaChile183 km (114 mi)NW of epicenterIquique(pop: 191,500)II: Very weakTarapacáChile195 km (121 mi)S of epicenterSierra Gorda(pop: 477)II: Very weakProvincia de Antofagasta, Region de AntofagastaChile197 km (122 mi)S of epicenterSan Pedro de Atacama(pop: 2,000)II: Very weakProvincia de El Loa, Region de AntofagastaChile216 km (134 mi)NE of epicenterColchani(pop: 12,000)II: Very weakDepartamento de PotosiBolivia217 km (135 mi)N of epicenterColchane(pop: 1,730)II: Very weakProvincia del Tamarugal, TarapacáChile218 km (136 mi)NE of epicenterUyuni(pop: 10,300)II: Very weakDepartamento de PotosiBolivia223 km (139 mi)N of epicenterCamina(pop: 1,250)II: Very weakProvincia del Tamarugal, TarapacáChile260 km (162 mi)SW of epicenterBaquedano(pop: 858)II: Very weakProvincia de Antofagasta, Region de AntofagastaChile265 km (165 mi)E of epicenterAtocha(pop: 1,830)I: Not feltDepartamento de PotosiBolivia272 km (169 mi)SW of epicenterMejillones(pop: 12,800)I: Not feltProvincia de Antofagasta, Region de AntofagastaChile283 km (176 mi)E of epicenterSanta Barbara(pop: 2,430)I: Not feltDepartamento de PotosiBolivia316 km (196 mi)E of epicenterTupiza(pop: 22,200)I: Not feltDepartamento de PotosiBolivia318 km (198 mi)SW of epicenterAntofagasta(pop: 352,600)I: Not feltRegion de AntofagastaChile331 km (206 mi)NE of epicenterChallapata(pop: 8,020)I: Not feltOruroBolivia345 km (214 mi)NW of epicenterArica(pop: 221,400)I: Not feltRegion de Arica y ParinacotaChile357 km (222 mi)SE of epicenterAbra Pampa(pop: 9,430)I: Not feltDepartamento de Cochinoca, Jujuy ProvinceArgentina362 km (225 mi)NE of epicenterTotoral(pop: 1,650)I: Not feltOruroBolivia362 km (225 mi)NE of epicenterPotosi(pop: 141,300)I: Not feltDepartamento de PotosiBolivia367 km (228 mi)NE of epicenterPoopo(pop: 1,720)I: Not feltOruroBolivia386 km (240 mi)NE of epicenterLlallagua(pop: 28,100)I: Not feltDepartamento de PotosiBolivia387 km (241 mi)SE of epicenterEl Aguilar(pop: 3,660)I: Not feltDepartamento de Humahuaca, Jujuy ProvinceArgentina402 km (250 mi)NE of epicenterColquechaca(pop: 1,710)I: Not feltDepartamento de PotosiBoliviaNotes:(*) 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 GMT2025-09-28EpicenterAgency4.4123 km76 mi05:25:43ANTOFAGASTA, CHILEEMSC (European-Mediterranean Seismological Centre)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 28, 2025 05:25 am (Universal Time)4 minutes ago4.4123 km0 km - This quakeProvincia de El Loa, Region de Antofagasta, 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 1,600 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.03 quakes per year (or 1 quake every 31.3 years)Mag. 6 or higher: 0.14 quakes per year (or 1 quake every 7 years)Mag. 5 or higher: 4.1 quakes per yearMag. 4 or higher: 97 quakes per year (or 8.1 quakes per month)Mag. 3 or higher: 660 quakes per year (or 55 quakes per month)Mag. 2 or higher: 1,600 quakes per year (or 4.4 quakes per day)Mag. 1 or higher: 1,600 quakes per year (or 4.4 quakes per day)The area where this quake occurred has a very high level of seismic activity. It has had at least 4 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 30 to 35 years.Number of quakes per yearPrevious quakes in the same area of this earthquake