Moderate magnitude 4.0 earthquake at 226 km depth28 Feb 16:33 UTC: First to report: EMSC after 11 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeFeb 28, 2026 16:22:27 UTC - Local time at epicenterSaturday, Feb 28, 2026, at 04:22 pm (Universal Time GMT +0)Statuspreliminary (automatic detection)Magnitude4.0Depth226 kmEpicenter latitude / longitude23.96°S / 67.29°WDepartamento de Los Andes, Salta Province, ArgentinaAlso near: Chile 8.3 km (5 mi) awaySeismic antipode23.96°N / 112.71°EChinaShaking intensityNot feltPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoIncaguasi (26 km / 16 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 energy11 minutes agoFeb 28, 2026 16:22 GMT / Feb 28, 2026 04:22 pm (Universal Time)Lat / Lng: -23.96 / -67.29: Salta, ArgentinaSource: EMSCDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22761374',-23.96000,-67.29000,'11 minutes ago: Mag. 4.0, Salta, Argentina',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 ArgentinaNearby placesThe closest larger town near the epicenter is San Antonio de los Cobres, a town with 4,000 inhabitants in Argentina, in 103 km (64 mi) distance to the east, but it is unlikely that the quake was felt there. DistancePlaceMax. shaking intensity(*)RegionCountry103 km (64 mi)E of epicenterSan Antonio de los Cobres(pop: 4,000)I: Not feltDepartamento de Los Andes, Salta ProvinceArgentina113 km (70 mi)NE of epicenterSusques(pop: 1,140)I: Not feltJujuy ProvinceArgentina146 km (91 mi)E of epicenterSanta Rosa de Tastil(pop: 2,000)I: Not feltDepartamento de Rosario de Lerma, Salta ProvinceArgentina149 km (93 mi)NW of epicenterSan Pedro de Atacama(pop: 2,000)I: Not feltProvincia de El Loa, Region de AntofagastaChile172 km (107 mi)SE of epicenterCachi(pop: 2,190)I: Not feltSalta ProvinceArgentina184 km (114 mi)NE of epicenterEl Aguilar(pop: 3,660)I: Not feltDepartamento de Humahuaca, Jujuy ProvinceArgentina198 km (123 mi)E of epicenterTilcara(pop: 5,640)I: Not feltJujuy ProvinceArgentina198 km (123 mi)SE of epicenterCampo Quijano(pop: 5,000)I: Not feltDepartamento de Rosario de Lerma, Salta ProvinceArgentina204 km (127 mi)E of epicenterSan Salvador de Jujuy(pop: 258,000)I: Not feltDepartamento de Doctor Manuel Belgrano, Jujuy ProvinceArgentina212 km (131 mi)SE of epicenterSalta(pop: 520,700)I: Not feltDepartamento Capital, Salta ProvinceArgentina213 km (132 mi)NE of epicenterAbra Pampa(pop: 9,430)I: Not feltDepartamento de Cochinoca, Jujuy ProvinceArgentina213 km (133 mi)E of epicenterPalpala(pop: 48,200)I: Not feltDepartamento de Palpala, Jujuy ProvinceArgentina215 km (134 mi)NE of epicenterHumahuaca(pop: 11,400)I: Not feltJujuy ProvinceArgentina220 km (137 mi)SE of epicenterEl Carril(pop: 9,780)I: Not feltDepartamento de Chicoana, Salta ProvinceArgentina236 km (147 mi)NW of epicenterCalama(pop: 166,300)I: Not feltProvincia de El Loa, Region de AntofagastaChile239 km (149 mi)E of epicenterLa Mendieta(pop: 3,810)I: Not feltDepartamento de San Pedro, Jujuy ProvinceArgentina248 km (154 mi)E of epicenterSan Pedro de Jujuy(pop: 58,400)I: Not feltDepartamento de San Pedro, Jujuy ProvinceArgentina253 km (157 mi)E of epicenterFraile Pintado(pop: 13,700)I: Not feltDepartamento de Ledesma, Jujuy ProvinceArgentina254 km (158 mi)E of epicenterLibertador General San Martin(pop: 49,300)I: Not feltDepartamento de Ledesma, Jujuy ProvinceArgentina270 km (168 mi)NE of epicenterLa Quiaca(pop: 14,800)I: Not feltDepartamento de Yavi, Jujuy ProvinceArgentina270 km (168 mi)SE of epicenterCafayate(pop: 11,800)I: Not feltSalta ProvinceArgentina270 km (168 mi)E of epicenterSanta Clara(pop: 4,880)I: Not feltDepartamento de Santa Barbara, Jujuy ProvinceArgentina271 km (169 mi)NE of epicenterVillazon(pop: 30,300)I: Not feltDepartamento de PotosiBolivia275 km (171 mi)E of epicenterCaimancito(pop: 5,400)I: Not feltDepartamento de Ledesma, Jujuy ProvinceArgentina289 km (180 mi)E of epicenterYuto(pop: 7,730)I: Not feltDepartamento de Ledesma, Jujuy ProvinceArgentina304 km (189 mi)E of epicenterPalma Sola(pop: 5,320)I: Not feltDepartamento de Santa Barbara, Jujuy ProvinceArgentina310 km (193 mi)SE of epicenterEl Galpon(pop: 8,360)I: Not feltDepartamento de Metan, Salta ProvinceArgentina316 km (196 mi)E of epicenterOrán(pop: 74,100)I: Not feltSalta ProvinceArgentina318 km (198 mi)W of epicenterAntofagasta(pop: 401,100)I: Not feltRegion de AntofagastaChile323 km (201 mi)NE of epicenterTupiza(pop: 22,200)I: Not feltDepartamento de PotosiBolivia324 km (201 mi)SE of epicenterTrancas(pop: 6,660)I: Not feltTucuman ProvinceArgentina325 km (202 mi)E of epicenterLas Lajitas(pop: 9,150)I: Not feltDepartamento de Anta, Salta ProvinceArgentina331 km (206 mi)NE of epicenterBermejo(pop: 35,400)I: Not feltDepartamento de TarijaBolivia363 km (226 mi)NW of epicenterTocopilla(pop: 25,400)I: Not feltRegion de AntofagastaChile370 km (230 mi)SE of epicenterTafi Viejo(pop: 48,500)I: Not feltTafi Viejo, Tucuman ProvinceArgentina375 km (233 mi)SE of epicenterYerba Buena(pop: 50,800)I: Not feltTucuman ProvinceArgentina376 km (234 mi)NE of epicenterTarija(pop: 159,300)I: Not feltDepartamento de TarijaBolivia380 km (236 mi)SE of epicenterSan Miguel de Tucuman(pop: 548,900)I: Not feltDepartamento de Capital, Tucuman ProvinceArgentina385 km (239 mi)SE of epicenterAlderetes(pop: 38,500)I: Not feltDepartamento de Cruz Alta, Tucuman ProvinceArgentina387 km (241 mi)SW of epicenterDiego de Almagro(pop: 13,900)I: Not feltChanaral, Region de AtacamaChileNotes:(*) 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 GMT2026-02-28EpicenterAgency4.0226 km140 mi16:22:27SALTA, ARGENTINAEMSC (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 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)Feb 28, 2026 04:22 pm (Universal Time)11 minutes ago4.0226 km0 km - This quakeDepartamento de Los Andes, Salta Province, ArgentinaMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 26 years and our earthquake archive back to 1900, there are about 1,100 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: 0.29 quakes per year (or 1 quake every 3.5 years)Mag. 5 or higher: 3.6 quakes per yearMag. 4 or higher: 138 quakes per year (or 11.5 quakes per month)Mag. 3 or higher: 856 quakes per year (or 71 quakes per month)Mag. 2 or higher: 1,100 quakes per year (or 3 quakes per day)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