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The quake had a very shallow depth of 20 km (12 mi) and was not felt (or at least not reported so).Quake Data | Interactive map | Seismograms | User reports | Aftershocks | Earlier quakes here | Quakes in Chile | Quakes in Argentina | Region de Magallanes y Antartica Chilena | Tierra del Fuego ProvinceHint: Click on the image to see different maps of this quake!Moderate magnitude 4.2 earthquake at 20 km depth21 Jul 17:25 UTC: First to report: EMSC after 4 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeJul 21, 2026 17:21:31 UTC - Local time at epicenterTuesday, Jul 21, 2026, at 02:21 pm (GMT -3)Statusconfirmed (manually revised)Magnitude4.20Depth20 kmEpicenter latitude / longitude55.62°S / 67.93°WChileAlso near: Argentina 83 km (52 mi) awaySeismic antipode55.62°N / 112.07°ERussiaShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoFueguino (165 km / 103 mi)Weather at epicenter at time of quakeOvercast Clouds 2.9°C (37 F), humidity: 66%, wind: 11 m/s (22 kts) from SWEstimated seismic energy released1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) | equivalent to ONE quake of magnitude 4.2 | about seismic energy12 minutes agoJul 21, 2026 17:21 GMT / Jul 21, 2026 02:21 pm (GMT -3)Lat / Lng: -55.62 / -67.93: Isla Navarino, Magallanes, ChileSource: EMSCOther sources: RaspberryShake: 4.2 / 20 km, CSN: 4.4 / 10 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23204523',-55.62000,-67.93000,'12 minutes ago: Mag. 4.2, Isla Navarino, Magallanes, 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 Ushuaia, a town with 57,000 inhabitants in Argentina, in 93 km (58 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(*)RegionCountry79 km (49 mi)N of epicenterPuerto Williams(pop: 2,000)II: Very weakProvincia Antartica Chilena, Region de Magallanes y Antartica ChilenaChile93 km (58 mi)N of epicenterUshuaia(pop: 56,800)II: Very weakTierra del Fuego ProvinceArgentina132 km (82 mi)N of epicenterTolhuin(pop: 3,000)II: Very weakTierra del Fuego ProvinceArgentina204 km (127 mi)N of epicenterRio Grande(pop: 52,700)II: Very weakDepartamento de Rio Grande, Tierra del Fuego ProvinceArgentina303 km (188 mi)NW of epicenterPorvenir(pop: 6,810)I: Not feltProvincia de Tierra del Fuego, Region de Magallanes y Antartica ChilenaChile334 km (208 mi)NW of epicenterPunta Arenas(pop: 117,400)I: Not feltProvincia de Magallanes, Region de Magallanes y Antartica ChilenaChileNotes:(*) 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 GMT2026-07-21EpicenterAgency4.220 km12 mi17:21:31ISLA NAVARINO, MAGALLANES, CHILEEMSC (European-Mediterranean Seismological Centre)4.220 km12 mi17:21:31Tierra Del Fuego0.4 km (0.2 mi) epicenter difference with EMSCRaspberryShake (RaspberryShake)4.410 km6.2 mi(*)17:21:07250 km al S de Puerto Williams178 km (111 mi) epicenter difference with EMSCCSN (National Seismological Center (Centro Sismológico Nacional))Notes:(*) A depth given as 10 km often means that the the depth of the quake could be not determined with sufficient accuracy."; HTMLcontent += ""; mainMap.addToMap("station"+id, lat, lon, title,HTMLcontent); mainMap.map.panTo([lat,lon]); document.getElementById("map_canvas").scrollIntoView();}]]>SeismogramsSeismic station: Puerto Williams (MG01/C1 network) | Distance from quake: 79 km / 49 mi | Show on map | Station InfoSeismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.2-5.0 Hz. Source: NSF SAGE Facility IRISWS timeseriesplot Web ServiceSeismic station: ISLA DAWSON (MG03/C1 network) | Distance from quake: 255 km / 159 mi | Show on map | Station InfoShow moreAftershocks 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 2 km2 (1 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)Jul 21, 2026 02:21 pm (GMT -3)12 minutes ago4.220 km0 km - This quakeSouth Atlantic Ocean, 18 km W of Isla Grevy Island, Region de Magallanes y Antartica Chilena, ChileMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 56 years and our earthquake archive back to 1900, there are about 1.4 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 4 or higher: 0.23 quakes per year (or 1 quake every 4.3 years)Mag. 3 or higher: 0.81 quakes per year (or 1 quake every 1.2 years)Mag. 2 or higher: 1.39 quakes per yearThe area where this quake occurred has relatively few earthquakes. However, It has had at least 2 quakes above magnitude 4 since 2018, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 1 to 5 years.Number of quakes per yearPrevious quakes in the same area of this earthquake