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The quake had a moderate depth of 126 km (78 mi) and was not felt (or at least not reported so).Quake Data | Interactive map | Seismograms | User reports | Earlier quakes here | Quakes in Argentina | Quakes in Chile | La Rioja Province | Catamarca Province | Region de AtacamaHint: Click on the image to see different maps of this quake!Light magnitude 3.9 earthquake at 126 km depth24 Jul 02:20 UTC: First to report: INPRES after 9 minutes.24 Jul 02:22: Now using data updates from EMSCI didn't feel itI felt this quakeEarthquake detailsDate & timeJul 24, 2026 02:11:01 UTC - Local time at epicenterThursday, Jul 23, 2026, at 11:11 pm (America/Argentina/La Rioja GMT -3)StatusconfirmedMagnitude3.90Depth126 kmEpicenter latitude / longitude28.04°S / 68.98°WDepartamento de Vinchina, La Rioja Province, ArgentinaAlso near: Chile 22 km (14 mi) awaySeismic antipode28.04°N / 111.02°EShaking intensityII Very weak shakingFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoTipas (103 km / 64 mi)Weather at epicenter at time of quakeOvercast Clouds -15.3°C (5 F), humidity: 92%, wind: 7 m/s (14 kts) from NEstimated 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 energy24 minutes agoJul 24, 2026 02:11 GMT / Jul 23, 2026 11:11 pm (La Rioja time)Lat / Lng: -28.04 / -68.98: LA Rioja, ArgentinaSource: EMSCOther sources: INPRES: 3.9 / 126 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23210852',-28.04000,-68.98000,'24 minutes ago: Mag. 3.9, LA Rioja, Argentina',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 ArgentinaNearby placesThe closest larger town near the epicenter is Vinchina, a town with 2,800 inhabitants in Argentina, in 110 km (68 mi) distance to the southeast, but it is unlikely that the quake was felt there. DistancePlaceMax. shaking intensity(*)RegionCountry110 km (68 mi)SE of epicenterVinchina(pop: 2,830)I: Not feltLa Rioja ProvinceArgentina139 km (86 mi)E of epicenterTinogasta(pop: 14,500)I: Not feltCatamarca ProvinceArgentina140 km (87 mi)E of epicenterFiambala(pop: 8,060)I: Not feltDepartamento de Tinogasta, Catamarca ProvinceArgentina142 km (88 mi)NW of epicenterTierra Amarilla(pop: 12,900)I: Not feltCopiapo, Region de AtacamaChile153 km (95 mi)NW of epicenterCopiapo(pop: 129,300)I: Not feltCopiapo, Region de AtacamaChile168 km (104 mi)SW of epicenterAlto del Carmen(pop: 5,030)I: Not feltHuasco, Region de AtacamaChile184 km (114 mi)W of epicenterVallenar(pop: 44,900)I: Not feltHuasco, Region de AtacamaChile185 km (115 mi)E of epicenterLondres(pop: 2,630)I: Not feltDepartamento de Belen, Catamarca ProvinceArgentina191 km (119 mi)SE of epicenterChilecito(pop: 42,200)I: Not feltLa Rioja ProvinceArgentina202 km (125 mi)E of epicenterPuerta de San Jose(pop: 1,070)I: Not feltDepartamento de Belen, Catamarca ProvinceArgentina211 km (131 mi)NW of epicenterCaldera(pop: 16,200)I: Not feltCopiapo, Region de AtacamaChile212 km (132 mi)NW of epicenterDiego de Almagro(pop: 13,900)I: Not feltChanaral, Region de AtacamaChile212 km (132 mi)W of epicenterFreirina(pop: 6,040)I: Not feltHuasco, Region de AtacamaChile221 km (137 mi)E of epicenterAimogasta(pop: 16,600)I: Not feltDepartamento de Arauco, La Rioja ProvinceArgentina222 km (138 mi)E of epicenterArauco(pop: 13,700)I: Not feltLa Rioja ProvinceArgentina225 km (140 mi)W of epicenterHuasco(pop: 8,980)I: Not feltRegion de AtacamaChile230 km (143 mi)NE of epicenterHualfin(pop: 2,300)I: Not feltDepartamento de Belen, Catamarca ProvinceArgentina236 km (147 mi)SE of epicenterVilla Bustos(pop: 2,170)I: Not feltDepartamento de Sanagasta, La Rioja ProvinceArgentina246 km (153 mi)S of epicenterSan Jose de Jachal(pop: 21,000)I: Not feltDepartamento de Jachal, San Juan ProvinceArgentina257 km (160 mi)SE of epicenterLa Rioja(pop: 178,900)I: Not feltDepartamento de Capital, La Rioja ProvinceArgentina267 km (166 mi)E of epicenterAndalgala(pop: 14,100)I: Not feltDepartamento de Andalgala, Catamarca ProvinceArgentina267 km (166 mi)SW of epicenterPaiguano(pop: 4,260)I: Not feltProvincia de Elqui, Region de CoquimboChile270 km (168 mi)NE of epicenterAntofagasta de la Sierra(pop: 500)I: Not feltCatamarca ProvinceArgentina272 km (169 mi)SW of epicenterLa Higuera(pop: 4,290)I: Not feltProvincia de Elqui, Region de CoquimboChile274 km (170 mi)E of epicenterPoman(pop: 3,390)I: Not feltDepartamento de Poman, Catamarca ProvinceArgentina279 km (173 mi)SW of epicenterVicuna(pop: 27,800)I: Not feltProvincia de Elqui, Region de CoquimboChile279 km (174 mi)E of epicenterMutquin(pop: 1,210)I: Not feltDepartamento de Poman, Catamarca ProvinceArgentina303 km (188 mi)SW of epicenterLa Serena(pop: 154,500)I: Not feltProvincia de Elqui, Region de CoquimboChile313 km (194 mi)SW of epicenterCoquimbo(pop: 161,300)I: Not feltProvincia de Elqui, Region de CoquimboChile318 km (198 mi)SW of epicenterAndacollo(pop: 11,100)I: Not feltProvincia de Elqui, Region de CoquimboChile365 km (227 mi)SE of epicenterChamical(pop: 13,400)I: Not feltLa Rioja ProvinceArgentinaNotes:(*) 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 GMT2026-07-24EpicenterAgency3.9126 km78 mi02:11:01LA RIOJA, ARGENTINAEMSC (European-Mediterranean Seismological Centre)3.9126 km78 mi02:11:01LA RIOJA0 km (0 mi) epicenter difference with EMSCINPRES"; HTMLcontent += ""; mainMap.addToMap("station"+id, lat, lon, title,HTMLcontent); mainMap.map.panTo([lat,lon]); document.getElementById("map_canvas").scrollIntoView();}]]>SeismogramsSeismic station: Copiapo (Tierra Amarilla), Chile (GO03/C network) | Distance from quake: 133 km / 83 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: 0.5-5.0 Hz. Source: NSF SAGE Facility IRISWS timeseriesplot Web ServiceSeismic station: El Transito (AC05/C1 network) | Distance from quake: 154 km / 96 mi | Show on map | Station InfoShow moreEarthquake statisticsAverage number of earthquakesBased on data from the past 56 years and our earthquake archive back to 1900, there are about 134 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.02 quakes per year (or 1 quake every 62.5 years)Mag. 5 or higher: 0.57 quakes per year (or 1 quake every 1.8 years)Mag. 4 or higher: 8.5 quakes per yearMag. 3 or higher: 54 quakes per year (or 4.5 quakes per month)Mag. 2 or higher: 134 quakes per year (or 11.2 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 6 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