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The quake had a moderate depth of 174 km (108 mi) and was not felt (or at least not reported so).Quake Data | Interactive map | Seismograms | User reports | Aftershocks | Earlier quakes here | Quakes in Argentina | Catamarca Province | La Rioja Province | Tucuman ProvinceHint: Click on the image to see different maps of this quake!Moderate magnitude 4.5 earthquake at 174 km depth26 Jul 17:36 UTC: First to report: EMSC after 7 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeJul 26, 2026 17:29:14 UTC - Local time at epicenterSunday, Jul 26, 2026, at 05:29 pm (Universal Time GMT +0)Statuspreliminary (automatic detection)Magnitude4.50Depth174 kmEpicenter latitude / longitude28.04°S / 66.7°WDepartamento de Poman, Catamarca Province, ArgentinaSeismic antipode28.04°N / 113.3°EShaking intensityII Very weak shakingFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoRobledo (173 km / 107 mi)Estimated seismic energy released3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 tons of TNT) | equivalent to ONE quake of magnitude 4.5 | about seismic energy8 minutes agoJul 26, 2026 17:29 GMT / Jul 26, 2026 05:29 pm (Universal Time)Lat / Lng: -28.04 / -66.7: Catamarca, ArgentinaSource: EMSCDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23218193',-28.04000,-66.70000,'8 minutes ago: Mag. 4.5, Catamarca, 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 where the quake might have been felt is Aimogasta, a town with 17,000 inhabitants in Argentina, in 59 km (37 mi) distance south 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(*)RegionCountry56 km (35 mi)NW of epicenterLondres(pop: 2,630)II: Very weakDepartamento de Belen, Catamarca ProvinceArgentina59 km (37 mi)S of epicenterAimogasta(pop: 16,600)II: Very weakDepartamento de Arauco, La Rioja ProvinceArgentina61 km (38 mi)S of epicenterArauco(pop: 13,700)II: Very weakLa Rioja ProvinceArgentina62 km (38 mi)SE of epicenterPoman(pop: 3,390)II: Very weakDepartamento de Poman, Catamarca ProvinceArgentina62 km (39 mi)SE of epicenterMutquin(pop: 1,210)II: Very weakDepartamento de Poman, Catamarca ProvinceArgentina62 km (39 mi)NW of epicenterPuerta de San Jose(pop: 1,070)II: Very weakDepartamento de Belen, Catamarca ProvinceArgentina63 km (39 mi)NE of epicenterAndalgala(pop: 14,100)II: Very weakDepartamento de Andalgala, Catamarca ProvinceArgentina82 km (51 mi)E of epicenterLos Varela(pop: 1,910)II: Very weakDepartamento de Ambato, Catamarca ProvinceArgentina83 km (52 mi)E of epicenterEl Rodeo(pop: 1,080)II: Very weakDepartamento de Ambato, Catamarca ProvinceArgentina85 km (53 mi)W of epicenterTinogasta(pop: 14,500)II: Very weakCatamarca ProvinceArgentina92 km (57 mi)N of epicenterHualfin(pop: 2,300)II: Very weakDepartamento de Belen, Catamarca ProvinceArgentina97 km (60 mi)E of epicenterSan Antonio(pop: 4,290)II: Very weakDepartamento de Paclin, Catamarca ProvinceArgentina99 km (62 mi)NW of epicenterFiambala(pop: 8,060)II: Very weakDepartamento de Tinogasta, Catamarca ProvinceArgentina102 km (63 mi)SE of epicenterCatamarca(pop: 159,100)II: Very weakDepartamento de Capital, Catamarca ProvinceArgentina102 km (63 mi)SE of epicenterCatamarca(pop: 159,100)II: Very weakDepartamento de Capital, Catamarca ProvinceArgentina104 km (65 mi)SE of epicenterHuillapima(pop: 7,780)II: Very weakDepartamento de Capayan, Catamarca ProvinceArgentina113 km (71 mi)E of epicenterLa Cocha(pop: 7,070)II: Very weakTucuman ProvinceArgentina118 km (73 mi)E of epicenterLos Altos(pop: 6,420)II: Very weakDepartamento de Santa Rosa, Catamarca ProvinceArgentina126 km (79 mi)NE of epicenterAguilares(pop: 32,500)II: Very weakDepartamento de Rio Chico, Tucuman ProvinceArgentina131 km (82 mi)E of epicenterGraneros(pop: 5,260)II: Very weakTucuman ProvinceArgentina145 km (90 mi)SE of epicenterAncasti(pop: 3,080)II: Very weakCatamarca ProvinceArgentina147 km (91 mi)SW of epicenterChilecito(pop: 42,200)II: Very weakLa Rioja ProvinceArgentina153 km (95 mi)NE of epicenterMonteros(pop: 23,800)II: Very weakTucuman ProvinceArgentina153 km (95 mi)S of epicenterLa Rioja(pop: 178,900)II: Very weakDepartamento de Capital, La Rioja ProvinceArgentina158 km (98 mi)NE of epicenterSimoca(pop: 7,940)II: Very weakTucuman ProvinceArgentina166 km (103 mi)SE of epicenterIcano(pop: 6,860)II: Very weakDepartamento de La Paz, Catamarca ProvinceArgentina168 km (105 mi)NE of epicenterFamailla(pop: 31,000)II: Very weakDepartamento de Famailla, Tucuman ProvinceArgentina178 km (110 mi)NE of epicenterBella Vista(pop: 15,100)II: Very weakDepartamento de Leales, Tucuman ProvinceArgentina191 km (119 mi)E of epicenterTermas de Rio Hondo(pop: 27,800)II: Very weakDepartamento de Rio Hondo, Santiago del Estero ProvinceArgentina195 km (121 mi)NE of epicenterYerba Buena(pop: 50,800)II: Very weakTucuman ProvinceArgentina200 km (124 mi)NE of epicenterSan Miguel de Tucuman(pop: 548,900)II: Very weakDepartamento de Capital, Tucuman ProvinceArgentina203 km (126 mi)NE of epicenterTafi Viejo(pop: 48,500)II: Very weakTafi Viejo, Tucuman ProvinceArgentina206 km (128 mi)NE of epicenterAlderetes(pop: 38,500)II: Very weakDepartamento de Cruz Alta, Tucuman ProvinceArgentina211 km (131 mi)SE of epicenterRecreo(pop: 14,200)II: Very weakDepartamento de La Paz, Catamarca ProvinceArgentina230 km (143 mi)N of epicenterCafayate(pop: 11,800)II: Very weakSalta ProvinceArgentina241 km (150 mi)E of epicenterSantiago del Estero(pop: 252,200)II: Very weakDepartamento de Capital, Santiago del Estero ProvinceArgentina261 km (162 mi)S of epicenterChamical(pop: 13,400)II: Very weakLa Rioja ProvinceArgentina315 km (196 mi)SW of epicenterSan Jose de Jachal(pop: 21,000)I: Not feltDepartamento de Jachal, San Juan ProvinceArgentina350 km (217 mi)SE of epicenterDean Funes(pop: 20,200)I: Not feltDepartamento de Ischilin, Cordoba ProvinceArgentina351 km (218 mi)SE of epicenterCruz del Eje(pop: 28,200)I: Not feltCordoba 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 GMT2026-07-26EpicenterAgency4.5174 km108 mi17:29:14CATAMARCA, ARGENTINAEMSC (European-Mediterranean Seismological Centre)"; 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: 351 km / 218 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: El Transito (AC05/C1 network) | Distance from quake: 360 km / 224 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 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)Jul 26, 2026 05:29 pm (Universal Time)8 minutes ago4.5174 km0 km - This quakeCatamarca, ArgentinaMain Shock (this quake)MoreMap of aftershocksPrevious quakes in the same area of this earthquake8 minutes agoJul 26, 2026 17:29 GMT / Jul 26, 2026 05:29 pm (Universal Time)Lat / Lng: -28.04 / -66.7: Catamarca, ArgentinaSource: EMSCDetail info | You felt it? - Report it!',4.5,45, '#bb202a', 0.9,1.5, '#bb202a', 0.27);map2.addToMap('thisQuake',-28.04,-66.7,'8 minutes ago: Mag. 4.5, Catamarca, Argentina','Earthquake: Mag 4.5 / 174 km (108 mi) depth8 minutes agoJul 26, 2026 17:29 GMT / Jul 26, 2026 05:29 pm (Universal Time)Lat / Lng: -28.04 / -66.7: Catamarca, ArgentinaSource: EMSCDetail info | You felt it? - Report it!','default'); // this will be local to this table obj function putQuakeOnMap(id,lat,lon,time,title,html,mag,zIndex) { qTableOlder.putQuakeOnMap(id,lat,lon,time,title,html,mag,zIndex); } map2.circleScale=0.5;qTableOlder.usePalette=1;qTableOlder.startVal=qTableOlder.referenceTime-(80*365.25*86400);qTableOlder.endVal=qTableOlder.referenceTime; qTableOlder.assignMap(map2); (async function(){await new Promise(r => setTimeout(r,4000));map2.map.setZoom(7)})(); })(); (function(){let done=false;async function loadPrevious(){if(done)return;done=true;while(typeof mkRequest=="undefined")await new Promise(r=>setTimeout(r,500));mkRequest("https://server2.allquakes.com/api/getPrevious.php?quakeId=23218193","get","",function(httpObj){let r=httpObj.responseText,d=document;if(""!=r&&200==httpObj.status){let o=JSON.parse(r);if(!o){let s=d.getElementById("olderQuakesSection");if(s)s.remove();return};let table=d.getElementById("qTableOlder");if(!table)return;table.innerHTML+=o.tableRows,qTableOlder.alternateBg();let ph=d.getElementById("placeholder_largestQText");if(ph)ph.innerHTML=o.html;let wrap=d.getElementById("sectionPreviousCWrap");if(wrap)wrap.style.display="";eval(o.js)}})}let d=document,target=d.getElementById("sectionPreviousCWrap")||d.getElementById("placeholder_largestQText")||d.getElementById("qTableOlder");if(!target||!("IntersectionObserver" in window)){loadPrevious();return}let obs=new IntersectionObserver(function(entries){if(entries.some(e=>e.isIntersecting)){obs.disconnect();loadPrevious()}},{rootMargin:"300px 0px"});obs.observe(target)})();]]>Sources: VolcanoDiscovery / VolcanoAdventures and other sources as noted.Use of material: Most text and images on our websites are owned by us. Re-use is generally not permitted without authorization. Contact us for licensing rights.