Moderate magnitude 4.0 earthquake at 221 km depth3 Jul 01:36 UTC: First to report: EMSC after 19 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeJul 3, 2026 01:17:43 UTC - Local time at epicenterFriday, Jul 3, 2026, at 01:17 am (Universal Time GMT +0)Statuspreliminary (automatic detection)Magnitude4.00Depth221 kmEpicenter latitude / longitude20.6993°S / 67.3066°WDepartamento de Potosi, BoliviaSeismic antipode20.6993°N / 112.6934°EShaking intensityNot feltPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoCerro San Agustin (77 km / 48 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 energy19 minutes agoJul 3, 2026 01:17 GMT / Jul 3, 2026 01:17 am (Universal Time)Lat / Lng: -20.6993 / -67.3066: Potosi, BoliviaSource: EMSCDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23155062',-20.69930,-67.30660,'19 minutes ago: Mag. 4.0, Potosi, Bolivia',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 BoliviaNearby placesThe closest larger town near the epicenter is San Cristobal, a town with 75 inhabitants in Bolivia, in 53 km (33 mi) distance to the south, but it is unlikely that the quake was felt there. DistancePlaceMax. shaking intensity(*)RegionCountry53 km (33 mi)S of epicenterSan Cristobal(pop: 75)I: Not feltDepartamento de PotosiBolivia57 km (35 mi)NE of epicenterUyuni(pop: 10,300)I: Not feltDepartamento de PotosiBolivia59 km (37 mi)NE of epicenterColchani(pop: 12,000)I: Not feltDepartamento de PotosiBolivia63 km (39 mi)S of epicenterCulpina K(pop: 71)I: Not feltDepartamento de PotosiBolivia99 km (62 mi)SE of epicenterPorco(pop: 5,960)I: Not feltDepartamento de PotosiBolivia116 km (72 mi)E of epicenterAtocha(pop: 1,830)I: Not feltDepartamento de PotosiBolivia133 km (83 mi)E of epicenterSanta Barbara(pop: 2,430)I: Not feltDepartamento de PotosiBolivia172 km (107 mi)E of epicenterSantiago de Cotagaita(pop: 1,900)I: Not feltDepartamento de PotosiBolivia184 km (115 mi)SE of epicenterTupiza(pop: 22,200)I: Not feltDepartamento de PotosiBolivia204 km (127 mi)NE of epicenterPotosi(pop: 141,300)I: Not feltDepartamento de PotosiBolivia208 km (129 mi)N of epicenterChallapata(pop: 8,020)I: Not feltOruroBolivia212 km (132 mi)W of epicenterPica(pop: 9,300)I: Not feltProvincia del Tamarugal, TarapacáChile218 km (136 mi)E of epicenterCamargo(pop: 4,720)I: Not feltProvincia Nor Cinti, Departamento de ChuquisacaBolivia232 km (144 mi)NE of epicenterBetanzos(pop: 4,850)I: Not feltDepartamento de PotosiBolivia235 km (146 mi)SE of epicenterVillazon(pop: 30,300)I: Not feltDepartamento de PotosiBolivia236 km (147 mi)SE of epicenterLa Quiaca(pop: 14,800)I: Not feltDepartamento de Yavi, Jujuy ProvinceArgentina249 km (155 mi)N of epicenterTotoral(pop: 1,650)I: Not feltOruroBolivia257 km (160 mi)SW of epicenterCalama(pop: 166,300)I: Not feltProvincia de El Loa, Region de AntofagastaChile260 km (162 mi)N of epicenterPoopo(pop: 1,720)I: Not feltOruroBolivia261 km (162 mi)NE of epicenterColquechaca(pop: 1,710)I: Not feltDepartamento de PotosiBolivia263 km (163 mi)S of epicenterSan Pedro de Atacama(pop: 11,000)I: Not feltProvincia de El Loa, Region de AntofagastaChile263 km (163 mi)W of epicenterPozo Almonte(pop: 16,900)I: Not feltProvincia del Tamarugal, TarapacáChile264 km (164 mi)N of epicenterLlallagua(pop: 28,100)I: Not feltDepartamento de PotosiBolivia273 km (169 mi)N of epicenterHuanuni(pop: 15,500)I: Not feltOruroBolivia280 km (174 mi)SE of epicenterAbra Pampa(pop: 9,430)I: Not feltDepartamento de Cochinoca, Jujuy ProvinceArgentina283 km (176 mi)N of epicenterMachacamarca(pop: 2,040)I: Not feltOruroBolivia283 km (176 mi)NE of epicenterSucre(pop: 224,800)I: Not feltDepartamento de ChuquisacaBolivia283 km (176 mi)E of epicenterTarija(pop: 159,300)I: Not feltDepartamento de TarijaBolivia295 km (184 mi)W of epicenterAlto Hospicio(pop: 142,100)I: Not feltProvincia de Iquique, TarapacáChile301 km (187 mi)W of epicenterIquique(pop: 199,600)I: Not feltTarapacáChile302 km (187 mi)NE of epicenterTarabuco(pop: 2,430)I: Not feltProvincia Yamparaez, Departamento de ChuquisacaBolivia304 km (189 mi)N of epicenterOruro(pop: 208,700)I: Not feltOruroBolivia337 km (209 mi)SW of epicenterTocopilla(pop: 25,400)I: Not feltRegion de AntofagastaChile356 km (221 mi)NE of epicenterAiquile(pop: 8,220)I: Not feltDepartamento de CochabambaBolivia370 km (230 mi)NE of epicenterMizque(pop: 30,500)I: Not feltDepartamento de CochabambaBolivia381 km (237 mi)SE of epicenterBermejo(pop: 35,400)I: Not feltDepartamento de TarijaBolivia399 km (248 mi)NW of epicenterArica(pop: 241,700)I: Not feltRegion de Arica y ParinacotaChile410 km (255 mi)SE of epicenterOrán(pop: 74,100)I: Not feltSalta ProvinceArgentina430 km (267 mi)NW of epicenterTacna(pop: 286,200)I: Not feltTacnaPeruNotes:(*) 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 GMT2026-07-3EpicenterAgency4.0221 km137 mi01:17:43.126POTOSI, BOLIVIAEMSC (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)Jul 3, 2026 01:17 am (Universal Time)19 minutes ago4.0221 km0 km - This quakePotosi, BoliviaMain 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 84 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 41.7 years)Mag. 6 or higher: 0.05 quakes per year (or 1 quake every 20.8 years)Mag. 5 or higher: 0.42 quakes per year (or 1 quake every 2.4 years)Mag. 4 or higher: 24.8 quakes per yearMag. 3 or higher: 72 quakes per year (or 6 quakes per month)Mag. 2 or higher: 84 quakes per year (or 7 quakes per month)The area where this quake occurred has a high level of seismic activity. It has had at least 3 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 40 to 45 years.Number of quakes per yearPrevious quakes in the same area of this earthquake