Light magnitude 3.9 earthquake at 43 km depth22 Aug 04:23 UTC: First to report: EMSC after 3 minutes.22 Aug 04:26: Magnitude recalculated from 3.8 to 3.9. Hypocenter depth recalculated from 18.40 to 42.90 km (from 11.4 to 27 mi). Epicenter location corrected by 13 km (7.8 mi) towards E.I didn't feel itI felt this quakeEarthquake detailsDate & timeAug 22, 2026 04:20:19 UTC - Local time at epicenterSaturday, Aug 22, 2026, at 12:20 am (America/Santiago GMT -4)Statusconfirmed (manually revised)Magnitude3.90Depth43 kmEpicenter latitude / longitude22.67°S / 70.41°WProvincia de Antofagasta, Region de Antofagasta, ChileSeismic antipode22.67°N / 109.59°EChinaShaking intensityIII Weak shaking near epicenterFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoSan Pedro (225 km / 140 mi)Weather at epicenter at time of quakeClear Sky 17.2°C (63 F), humidity: 80%, wind: 1 m/s (2 kts) from WSWEstimated seismic energy released4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) | equivalent to ONE quake of magnitude 3.9 | about seismic energy20 minutes agoAug 22, 2026 04:20 GMT / Aug 22, 2026 12:20 am (Santiago time)Lat / Lng: -22.67 / -70.41: Offshore Antofagasta, ChileSource: EMSCOther sources: CSN: 3.9 / 43 km, RaspberryShake: 3.9 / 43 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23302960',-22.67000,-70.41000,'20 minutes ago: Mag. 3.9, Offshore Antofagasta, Chile',html,'quakes-5-24.png',18,18,9,9,124]); 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 Tocopilla, a town with 25,000 inhabitants in Chile, in 68 km (42 mi) distance north 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(*)RegionCountry48 km (30 mi)S of epicenterMejillones(pop: 14,100)II: Very weakProvincia de Antofagasta, Region de AntofagastaChile68 km (42 mi)N of epicenterTocopilla(pop: 25,400)II: Very weakRegion de AntofagastaChile85 km (53 mi)NE of epicenterMaria Elena(pop: 7,530)II: Very weakProvincia de Tocopilla, Region de AntofagastaChile94 km (58 mi)SE of epicenterBaquedano(pop: 858)II: Very weakProvincia de Antofagasta, Region de AntofagastaChile109 km (68 mi)S of epicenterAntofagasta(pop: 401,100)II: Very weakRegion de AntofagastaChile114 km (71 mi)E of epicenterSierra Gorda(pop: 1,070)II: Very weakProvincia de Antofagasta, Region de AntofagastaChile144 km (90 mi)NE of epicenterQuillagua(pop: 141)II: Very weakProvincia de Tocopilla, Region de AntofagastaChile151 km (94 mi)N of epicenterCaleta Chipana(pop: 84)II: Very weakProvincia de Iquique, TarapacáChile154 km (96 mi)E of epicenterCalama(pop: 166,300)I: Not feltProvincia de El Loa, Region de AntofagastaChile188 km (117 mi)N of epicenterRio Seco(pop: 145)I: Not feltProvincia de Iquique, TarapacáChile220 km (137 mi)N of epicenterChanavayita(pop: 603)I: Not feltProvincia de Iquique, TarapacáChile228 km (142 mi)E of epicenterSan Pedro de Atacama(pop: 11,000)I: Not feltProvincia de El Loa, Region de AntofagastaChile228 km (142 mi)N of epicenterOficina Victoria(pop: 83)I: Not feltProvincia del Tamarugal, TarapacáChile230 km (143 mi)N of epicenterPlaya Quinteros(pop: 20)I: Not feltProvincia de Iquique, TarapacáChile239 km (148 mi)NE of epicenterHuatacondo(pop: 55)I: Not feltProvincia del Tamarugal, TarapacáChile243 km (151 mi)N of epicenterColonia Pintados(pop: 143)I: Not feltProvincia del Tamarugal, TarapacáChile251 km (156 mi)N of epicenterLos Verdes(pop: 216)I: Not feltProvincia de Iquique, TarapacáChile267 km (166 mi)NE of epicenterPica(pop: 9,300)I: Not feltProvincia del Tamarugal, TarapacáChile269 km (167 mi)N of epicenterAlto Hospicio(pop: 142,100)I: Not feltProvincia de Iquique, TarapacáChile271 km (168 mi)N of epicenterLa Tirana(pop: 837)I: Not feltProvincia del Tamarugal, TarapacáChile274 km (171 mi)NE of epicenterOllagüe(pop: 134)I: Not feltProvincia de El Loa, Region de AntofagastaChile275 km (171 mi)N of epicenterIquique(pop: 199,600)I: Not feltTarapacáChile276 km (172 mi)N of epicenterPozo Almonte(pop: 16,900)I: Not feltProvincia del Tamarugal, TarapacáChileNotes:(*) 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!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 GMT2026-08-22EpicenterAgency3.943 km27 mi04:20:19OFFSHORE ANTOFAGASTA, CHILEEMSC (European-Mediterranean Seismological Centre)3.943 km27 mi04:20:1948 km al N de Mejillones0.1 km (0.1 mi) epicenter difference with EMSCCSN (National Seismological Center (Centro Sismológico Nacional))3.943 km27 mi04:20:19Near Coast of Northern Chile0.1 km (0.1 mi) epicenter difference with EMSCRaspberryShake (RaspberryShake)Earthquake statisticsAverage number of earthquakesBased on data from the past 26 years and our earthquake archive back to 1900, there are about 141 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: 0.21 quakes per year (or 1 quake every 4.7 years)Mag. 5 or higher: 2.2 quakes per yearMag. 4 or higher: 13.9 quakes per yearMag. 3 or higher: 62 quakes per year (or 5.2 quakes per month)Mag. 2 or higher: 143 quakes per year (or 11.9 quakes per month)Mag. 1 or higher: 145 quakes per year (or 12.1 quakes per month)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