Moderate magnitude 4.4 earthquake at 163 km depth12 Jan 01:01 UTC: First to report: GFZ after 4 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeJan 12, 2026 00:57:52 UTC - Local time at epicenterMonday, Jan 12, 2026, at 12:57 am (Universal Time GMT +0)Statuspreliminary (automatic detection)Magnitude4.4Depth163 kmEpicenter latitude / longitude31.297°S / 68.991°WDepartamento de Ullum, San Juan Province, ArgentinaSeismic antipode31.297°N / 111.009°EChinaShaking intensityII Very weak shakingFelt0 reportsPrimary data sourceGFZ (German Research Centre for Geosciences)Nearest volcanoTupungato (241 km / 150 mi)Estimated seismic energy released2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 tons of TNT) | equivalent to ONE quake of magnitude 4.4 | about seismic energy4 minutes agoJan 12, 2026 00:57 GMT / Jan 12, 2026 12:57 am (Universal Time)Lat / Lng: -31.297 / -68.991: San Juan Province, ArgentinaSource: GFZDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22605792',-31.29700,-68.99100,'4 minutes ago: Mag. 4.4, San Juan Province, 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 San Juan, a city with more than 110,000 inhabitants in Argentina, in 52 km (32 mi) distance southeast 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. In the capital of Chile, Santiago, 286 km (178 mi) away from the epicenter, the earthquake could not be felt.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry37 km (23 mi)SE of epicenterVilla Basilio Nievas(pop: 4,040)II: Very weakDepartamento de Zonda, San Juan ProvinceArgentina41 km (26 mi)W of epicenterCalingasta(pop: 8,180)II: Very weakSan Juan ProvinceArgentina47 km (29 mi)E of epicenterAlbardon(pop: 20,400)II: Very weakDepartamento de Albardon, San Juan ProvinceArgentina47 km (29 mi)E of epicenterVilla General San Martin(pop: 10,100)II: Very weakDepartamento de San Martin, San Juan ProvinceArgentina48 km (30 mi)SE of epicenterVilla Paula de Sarmiento(pop: 19,100)II: Very weakDepartamento de Chimbas, San Juan ProvinceArgentina49 km (30 mi)SE of epicenterChimbas(pop: 73,800)II: Very weakSan Juan ProvinceArgentina52 km (32 mi)SE of epicenterSan Juan(pop: 109,100)II: Very weakDepartamento de Capital, San Juan ProvinceArgentina54 km (34 mi)SE of epicenterSanta Lucia(pop: 43,600)II: Very weakDepartamento de Santa Lucia, San Juan ProvinceArgentina58 km (36 mi)SE of epicenterPocito(pop: 41,000)II: Very weakSan Juan ProvinceArgentina70 km (44 mi)SE of epicenterNueve de Julio(pop: 7,650)II: Very weakSan Juan ProvinceArgentina78 km (48 mi)SE of epicenterCaucete(pop: 33,600)II: Very weakSan Juan ProvinceArgentina120 km (74 mi)N of epicenterSan Jose de Jachal(pop: 21,000)II: Very weakDepartamento de Jachal, San Juan ProvinceArgentina163 km (101 mi)NE of epicenterVilla San Agustin(pop: 6,860)II: Very weakValle Fertil, San Juan ProvinceArgentina178 km (110 mi)S of epicenterMendoza(pop: 114,900)II: Very weakDepartamento de Guaymallen, Mendoza ProvinceArgentina205 km (127 mi)S of epicenterSan Martin(pop: 82,500)II: Very weakDepartamento de San Martin, Mendoza ProvinceArgentina210 km (131 mi)W of epicenterIllapel(pop: 22,800)II: Very weakProvincia de Choapa, Region de CoquimboChile220 km (137 mi)SW of epicenterPutaendo(pop: 15,400)II: Very weakSan Felipe de Aconcagua, Region de ValparaisoChile224 km (139 mi)W of epicenterOvalle(pop: 77,100)II: Very weakProvincia de Limari, Region de CoquimboChile224 km (139 mi)SW of epicenterSan Esteban(pop: 17,100)II: Very weakLos Andes, Region de ValparaisoChile228 km (142 mi)SW of epicenterLos Andes(pop: 63,000)II: Very weakRegion de ValparaisoChile230 km (143 mi)SW of epicenterSan Felipe(pop: 59,300)II: Very weakRegion de ValparaisoChile234 km (145 mi)SW of epicenterCabildo(pop: 19,300)II: Very weakPetorca, Region de ValparaisoChile248 km (154 mi)SW of epicenterLa Ligua(pop: 24,900)I: Not feltPetorca, Region de ValparaisoChile265 km (164 mi)SW of epicenterColina(pop: 146,200)I: Not feltChacabuco, Santiago MetropolitanChile266 km (165 mi)NW of epicenterLa Serena(pop: 154,500)I: Not feltProvincia de Elqui, Region de CoquimboChile266 km (165 mi)SW of epicenterLa Calera(pop: 50,200)I: Not feltQuillota, Region de ValparaisoChile267 km (166 mi)SW of epicenterHacienda La Calera(pop: 49,100)I: Not feltQuillota, Region de ValparaisoChile270 km (168 mi)NW of epicenterCoquimbo(pop: 161,300)I: Not feltProvincia de Elqui, Region de CoquimboChile276 km (172 mi)SW of epicenterQuillota(pop: 67,800)I: Not feltRegion de ValparaisoChile277 km (172 mi)NE of epicenterChilecito(pop: 42,200)I: Not feltLa Rioja ProvinceArgentina282 km (175 mi)SW of epicenterQuilicura(pop: 210,400)I: Not feltSantiago, Santiago MetropolitanChile283 km (176 mi)SW of epicenterLampa(pop: 102,200)I: Not feltChacabuco, Santiago MetropolitanChile284 km (177 mi)SW of epicenterRenca(pop: 147,200)I: Not feltSantiago, Santiago MetropolitanChile286 km (178 mi)SW of epicenterSantiago(pop: 4,837,300)I: Not feltSantiago MetropolitanChile287 km (178 mi)SW of epicenterLimache(pop: 35,900)I: Not feltMarga Marga, Region de ValparaisoChile289 km (180 mi)SW of epicenterLo Prado(pop: 104,300)I: Not feltSantiago, Santiago MetropolitanChile293 km (182 mi)NE of epicenterLa Rioja(pop: 178,900)I: Not feltDepartamento de Capital, La Rioja ProvinceArgentina297 km (185 mi)SW of epicenterVilla Alemana(pop: 97,300)I: Not feltMarga Marga, Region de ValparaisoChile299 km (186 mi)SW of epicenterConcon(pop: 42,200)I: Not feltValparaiso, Region de ValparaisoChile302 km (188 mi)SW of epicenterQuilpue(pop: 130,300)I: Not feltMarga Marga, Region de ValparaisoChileNotes:(*) 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!Compare 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 GMT2026-01-12EpicenterAgency4.41163 km101 mi00:57:52.78San Juan Province, ArgentinaGFZ (German Research Centre for Geosciences)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 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)Jan 12, 2026 12:57 am (Universal Time)4 minutes ago4.4163 km0 km - This quakeDepartamento de Ullum, San Juan Province, ArgentinaMain 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 1,300 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.08 quakes per year (or 1 quake every 12.7 years)Mag. 5 or higher: 1.28 quakes per yearMag. 4 or higher: 31.3 quakes per year (or 2.6 quakes per month)Mag. 3 or higher: 388 quakes per year (or 32.4 quakes per month)Mag. 2 or higher: 1,300 quakes per year (or 3.6 quakes per day)Mag. 1 or higher: 1,300 quakes per year (or 3.6 quakes per day)The area where this quake occurred has a high level of seismic activity. It has had at least 10 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 10 to 15 years.Number of quakes per yearPrevious quakes in the same area of this earthquake