Moderate magnitude 4.5 earthquake at unknown depth10 Apr 02:15 UTC: First to report: EMSC after 6 minutes.10 Apr 02:19: Magnitude recalculated from 4.3 to 4.5.I didn't feel itI felt this quakeEarthquake detailsDate & timeApr 10, 2026 02:09:11 UTC - Local time at epicenterThursday, Apr 9, 2026, at 11:09 pm (America/Argentina/La Rioja GMT -3)Statuspreliminary (automatic detection)Magnitude4.5Depth10 kmEpicenter latitude / longitude29.55°S / 68.3°WDepartamento de Coronel Felipe Varela, La Rioja Province, ArgentinaSeismic antipode29.55°N / 111.7°EShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Weather at epicenter at time of quakeClear Sky 17°C (63 F), humidity: 54%, wind: 2 m/s (4 kts) from SSEEstimated 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 energy21 minutes agoApr 10, 2026 02:09 GMT / Apr 9, 2026 11:09 pm (La Rioja time)Lat / Lng: -29.55 / -68.3: LA Rioja, ArgentinaSource: EMSCDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22894166',-29.55000,-68.30000,'21 minutes ago: Mag. 4.5, LA Rioja, 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 Chilecito, a town with 42,000 inhabitants in Argentina, in 89 km (55 mi) distance northeast of the epicenter. People likely experienced 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(*)RegionCountry88 km (55 mi)SW of epicenterSan Jose de Jachal(pop: 21,000)III: WeakDepartamento de Jachal, San Juan ProvinceArgentina88 km (55 mi)N of epicenterVinchina(pop: 2,830)III: WeakLa Rioja ProvinceArgentina89 km (55 mi)NE of epicenterChilecito(pop: 42,200)III: WeakLa Rioja ProvinceArgentina127 km (79 mi)E of epicenterVilla Bustos(pop: 2,170)II: Very weakDepartamento de Sanagasta, La Rioja ProvinceArgentina141 km (87 mi)E of epicenterLa Rioja(pop: 178,900)II: Very weakDepartamento de Capital, La Rioja ProvinceArgentina145 km (90 mi)SE of epicenterVilla San Agustin(pop: 6,860)II: Very weakValle Fertil, San Juan ProvinceArgentina180 km (112 mi)NE of epicenterTinogasta(pop: 14,500)II: Very weakCatamarca ProvinceArgentina182 km (113 mi)NE of epicenterArauco(pop: 13,700)II: Very weakLa Rioja ProvinceArgentina182 km (113 mi)NE of epicenterAimogasta(pop: 16,600)II: Very weakDepartamento de Arauco, La Rioja ProvinceArgentina211 km (131 mi)S of epicenterAlbardon(pop: 20,400)II: Very weakDepartamento de Albardon, San Juan ProvinceArgentina211 km (131 mi)S of epicenterVilla General San Martin(pop: 10,100)II: Very weakDepartamento de San Martin, San Juan ProvinceArgentina211 km (131 mi)SE of epicenterChamical(pop: 13,400)II: Very weakLa Rioja ProvinceArgentina217 km (135 mi)S of epicenterChimbas(pop: 73,800)II: Very weakSan Juan ProvinceArgentina217 km (135 mi)S of epicenterVilla Paula de Sarmiento(pop: 19,100)II: Very weakDepartamento de Chimbas, San Juan ProvinceArgentina219 km (136 mi)N of epicenterFiambala(pop: 8,060)II: Very weakDepartamento de Tinogasta, Catamarca ProvinceArgentina222 km (138 mi)S of epicenterSan Juan(pop: 109,100)II: Very weakDepartamento de Capital, San Juan ProvinceArgentina222 km (138 mi)S of epicenterSanta Lucia(pop: 43,600)II: Very weakDepartamento de Santa Lucia, San Juan ProvinceArgentina226 km (140 mi)SW of epicenterCalingasta(pop: 8,180)II: Very weakSan Juan ProvinceArgentina234 km (145 mi)S of epicenterCaucete(pop: 33,600)II: Very weakSan Juan ProvinceArgentina236 km (147 mi)S of epicenterNueve de Julio(pop: 7,650)II: Very weakSan Juan ProvinceArgentina239 km (148 mi)S of epicenterPocito(pop: 41,000)II: Very weakSan Juan ProvinceArgentina243 km (151 mi)E of epicenterHuillapima(pop: 7,780)II: Very weakDepartamento de Capayan, Catamarca ProvinceArgentina262 km (163 mi)NW of epicenterVallenar(pop: 44,900)II: Very weakHuasco, Region de AtacamaChile273 km (169 mi)NE of epicenterCatamarca(pop: 159,100)II: Very weakDepartamento de Capital, Catamarca ProvinceArgentina273 km (170 mi)SE of epicenterCastro Barros(pop: 4,320)II: Very weakDepartamento de General Belgrano, La Rioja ProvinceArgentina288 km (179 mi)W of epicenterLa Serena(pop: 154,500)II: Very weakProvincia de Elqui, Region de CoquimboChile292 km (182 mi)NE of epicenterAndalgala(pop: 14,100)II: Very weakDepartamento de Andalgala, Catamarca ProvinceArgentina297 km (184 mi)W of epicenterCoquimbo(pop: 161,300)II: Very weakProvincia de Elqui, Region de CoquimboChile303 km (188 mi)SW of epicenterOvalle(pop: 77,100)II: Very weakProvincia de Limari, Region de CoquimboChile314 km (195 mi)NW of epicenterCopiapo(pop: 129,300)II: Very weakCopiapo, Region de AtacamaChile353 km (219 mi)NE of epicenterAguilares(pop: 32,500)I: Not feltDepartamento de Rio Chico, Tucuman ProvinceArgentina359 km (223 mi)SW of epicenterIllapel(pop: 22,800)I: Not feltProvincia de Choapa, Region de CoquimboChile381 km (237 mi)NE of epicenterMonteros(pop: 23,800)I: Not feltTucuman ProvinceArgentina397 km (247 mi)NE of epicenterFamailla(pop: 31,000)I: Not feltDepartamento de Famailla, Tucuman ProvinceArgentina399 km (248 mi)SE of epicenterVilla Dolores(pop: 28,000)I: Not feltDepartamento de San Javier, Cordoba ProvinceArgentina406 km (252 mi)NE of epicenterBella Vista(pop: 15,100)I: Not feltDepartamento de Leales, Tucuman ProvinceArgentina424 km (263 mi)NE of epicenterYerba Buena(pop: 50,800)I: Not feltTucuman ProvinceArgentina429 km (267 mi)NE of epicenterSan Miguel de Tucuman(pop: 548,900)I: Not feltDepartamento de Capital, Tucuman ProvinceArgentina432 km (269 mi)NE of epicenterTafi Viejo(pop: 48,500)I: Not feltTafi Viejo, Tucuman ProvinceArgentina434 km (270 mi)NE of epicenterAlderetes(pop: 38,500)I: Not feltDepartamento de Cruz Alta, Tucuman 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 GMT2026-04-10EpicenterAgency4.510 km6.2 mi(*)02:09:11LA RIOJA, ARGENTINAEMSC (European-Mediterranean Seismological Centre)Notes:(*) A depth given as 10 km often means that the the depth of the quake could be not determined with sufficient accuracy.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)Apr 9, 2026 11:09 pm (La Rioja)21 minutes ago4.510 km0 km - This quakeLA Rioja, 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 118 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 5 or higher: 0.44 quakes per year (or 1 quake every 2.3 years)Mag. 4 or higher: 6 quakes per yearMag. 3 or higher: 37.4 quakes per year (or 3.1 quakes per month)Mag. 2 or higher: 118 quakes per year (or 9.9 quakes per month)The area where this quake occurred has a high level of seismic activity. It has had at least 25 quakes above magnitude 5 since 1970, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 1 to 5 years.Number of quakes per yearPrevious quakes in the same area of this earthquakeThe earthquake occurred 9 weeks after a magnitude 4.9 earthquake had hit on Friday, Feb 6, 2026, at 12:44 am local time (America/Argentina/La Rioja GMT -3) in 88 km (55 mi) distance to the northwest:Mag. 4.9 earthquake 56 km WSW of Vinchina - Argentina - Feb 6, 2026 - The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 5.5. It had occurred 6 years earlier, on Sunday, Nov 3, 2019, at 10:23 am local time (America/Argentina/La Rioja GMT -3) in La Rioja Province, Argentina:Mag. 5.5 earthquake La Rioja Province - Argentina - Nov 3, 2019 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 8.5. It had occurred 103 years ago earlier, on Saturday, Nov 11, 1922, at 04:32 am local time (Universal Time GMT +0) in Region de Atacama, Chile:Mag. 8.5 earthquake 94 km ENE of Vallenar - Chile - Nov 11, 1922 - Below is a list and map of larger or recent quakes that had occurred near the epicenter before this earthquake (within up to 100 km/61 mi distance, up to 300 km/183 mi for very large quakes above mag. 7). Filter and sort the list by magnitude or time.Max results102050100AllMagnitudeAll2+3+4+5+6+7+8+Time before48 hours1 week30 days1 year5 years30 yearsAny ageDate and TimeMagDepthDistanceLocationDetailsMapFeb 6, 12:44 am (La Rioja)4.9107 km88 km (55 mi) to the NW 56 km WSW of Vinchina, Argentina 4 reportsInfoJan 4, 07:29 pm (La Rioja)4.2124 km95 km (59 mi) to the NE 26 km NNW of Chilecito, ArgentinaInfoDec 9, 2025 09:15 pm (La Rioja)4.296 km98 km (61 mi) to the N 17 km ENE of Vinchina, Argentina 1 reportInfoJun 23, 2025 10:53 pm (La Rioja)4.846 km30 km (19 mi) to the N 59 km SSW of Vinchina, Argentina 4 reportsInfoFeb 18, 2025 07:11 pm (San Juan)4.1115 km68 km (42 mi) to the SW San Juan, ArgentinaInfoJan 19, 2025 06:51 pm (La Rioja)4.498 km97 km (60 mi) to the N 40 km W of Vinchina, ArgentinaInfoDec 13, 2023 03:34 pm (La Rioja)4.3115 km48 km (30 mi) to the NEDepartamento de Coronel Felipe Varela, 41 km southwest of Chilecito, Departamento de Chilecito, La Rioja Province, ArgentinaInfoOct 16, 2023 03:49 pm (La Rioja)4.335 km23 km (14 mi) to the N 65 km S of Vinchina, ArgentinaInfoOct 4, 2022 01:29 pm (La Rioja)5.210 km7.3 km (4.5 mi) to the NEDepartamento de Coronel Felipe Varela, 82 km southwest of Chilecito, Departamento de Chilecito, La Rioja Province, ArgentinaInfoNov 3, 2019 10:23 am (La Rioja)5.594 km73 km (45 mi) to the NE 20 km west of Chilecito, Departamento de Chilecito, La Rioja Province, Argentina 5 reportsInfoAug 1, 2015 08:30 am (San Juan)5.010 km57 km (36 mi) to the S 48 km northeast of San Jose de Jachal, Departamento de Jachal, San Juan Province, ArgentinaInfoMar 27, 2014 09:10 pm (La Rioja)5.228 km63 km (39 mi) to the NWDepartamento de Coronel Felipe Varela, 75 km southwest of Vinchina, Departamento de Vinchina, La Rioja Province, ArgentinaInfoMar 27, 2014 08:50 pm (La Rioja)5.710 km61 km (38 mi) to the NW 69 km SW of Vinchina, ArgentinaInfoMay 5, 2013 05:59 am (San Juan)5.010 km65 km (40 mi) to the W 60 km north of San Jose de Jachal, Departamento de Jachal, San Juan Province, ArgentinaInfoApr 20, 2013 04:14 pm (La Rioja)4.96 km29 km (18 mi) to the NWDepartamento de Coronel Felipe Varela, La Rioja Province, 96 km north of San Jose de Jachal, Departamento de Jachal, San Juan Province, ArgentinaInfoOct 15, 2009 04:32 pm (La Rioja)4.9124 km94 km (59 mi) to the EDepartamento de Chilecito, 46 km west of La Rioja, Departamento de Capital, La Rioja Province, ArgentinaInfoAug 6, 2008 09:18 pm (San Juan)4.993 km88 km (55 mi) to the W 107 km NNW of San José De Jáchal, ArgentinaInfoMay 19, 2007 01:26 pm (La Rioja)5.0112 km96 km (60 mi) to the NW La Rioja, ArgentinaInfoSep 12, 2006 10:30 am (La Rioja)6.0114 km89 km (55 mi) to the NWDepartamento de General Lamadrid, 138 km west of Chilecito, Departamento de Chilecito, La Rioja Province, ArgentinaInfoAug 19, 2006 11:51 pm (La Rioja)5.0111 km50 km (31 mi) to the N La Rioja, ArgentinaInfoJan 27, 2004 11:02 pm (Universal Time)4.936 km84 km (52 mi) to the S 41 km east of San Jose de Jachal, Departamento de Jachal, San Juan Province, ArgentinaInfoDec 4, 2002 06:03 pm (La Rioja)4.930 km88 km (55 mi) to the SE 65 km N of San Agustín De Valle Fértil, ArgentinaInfoApr 21, 2001 03:15 pm (La Rioja)5.8128 km91 km (56 mi) to the NE 6.9 km north of Chilecito, Departamento de Chilecito, La Rioja Province, ArgentinaInfoMar 31, 2001 03:54 am (La Rioja)5.4104 km17 km (10.4 mi) to the NDepartamento de Coronel Felipe Varela, 85 km west of Chilecito, Departamento de Chilecito, La Rioja Province, ArgentinaInfoMar 16, 1995 11:33 am (La Rioja)5.1112 km41 km (26 mi) to the N 51 km SSW of Vinchina, ArgentinaInfoMar 15, 1991 03:51 pm (La Rioja)5.3114 km60 km (37 mi) to the NW 62 km SW of Vinchina, ArgentinaInfoFeb 27, 1991 05:34 am (San Juan)5.435 km87 km (54 mi) to the SW 2 km NNW of San José De Jáchal, ArgentinaInfoDec 27, 1988 07:06 am (La Rioja)5.2117 km49 km (30 mi) to the N La Rioja, ArgentinaInfoNov 29, 1988 05:17 pm (La Rioja)5.1121 km52 km (32 mi) to the NE La Rioja, ArgentinaInfoJun 27, 1979 06:46 pm (La Rioja)5.6115 km7.9 km (4.9 mi) to the NDepartamento de Coronel Felipe Varela, 83 km southwest of Chilecito, Departamento de Chilecito, La Rioja Province, ArgentinaInfoNov 23, 1977 06:26 am (San Juan)7.413 km172 km (107 mi) to the SDepartamento de Caucete, 92 km northeast of San Juan, Departamento de Capital, San Juan Province, ArgentinaInfoJun 7, 1977 10:31 am (La Rioja)5.2111 km62 km (38 mi) to the SEDepartamento de Independencia, 98 km southwest of La Rioja, Departamento de Capital, La Rioja Province, ArgentinaInfoNov 26, 1976 11:49 am (La Rioja)5.2130 km36 km (22 mi) to the W 69 km north of San Jose de Jachal, Departamento de Jachal, San Juan Province, ArgentinaInfoFeb 20, 1974 12:02 am (San Juan)5.5115 km62 km (38 mi) to the SW San Juan, ArgentinaInfoSep 16, 1972 12:35 am (La Rioja)5.493 km97 km (60 mi) to the NDepartamento de General Lamadrid, 36 km west of Vinchina, Departamento de Vinchina, La Rioja Province, ArgentinaInfoOct 24, 1968 02:34 pm (San Juan)5.345 km97 km (60 mi) to the S 34 km southeast of San Jose de Jachal, Departamento de Jachal, San Juan Province, ArgentinaInfoNov 13, 1965 02:59 pm (La Rioja)5.760 km21 km (13 mi) to the NEDepartamento de Coronel Felipe Varela, 69 km southwest of Chilecito, Departamento de Chilecito, La Rioja Province, ArgentinaInfoMay 18, 1963 02:33 am (San Juan)5.915 km51 km (32 mi) to the W 68 km north of San Jose de Jachal, Departamento de Jachal, San Juan Province, ArgentinaInfoNov 11, 1922 04:32 am (Universal Time)8.570 km206 km (128 mi) to the NWCopiapo, 94 km east of Vallenar, Huasco, Region de Atacama, ChileInfoAug 3, 1920 07:57 pm (Universal Time)7.015 km235 km (146 mi) to the N 33 km northwest of Fiambala, Departamento de Tinogasta, Catamarca Province, ArgentinaInfoJul 27, 1917 02:51 am (Universal Time)7.060 km230 km (143 mi) to the SWDepartamento de Calingasta, 152 km west of San Juan, Departamento de Capital, San Juan Province, ArgentinaInfoMar 19, 1904 06:28 am (Universal Time)7.00 km269 km (167 mi) to the W 53 km southwest of Vallenar, Huasco, Region de Atacama, ChileInfoMap of earlier quakes in the area of this quakeMax results102050100AllMagnitudeAll2+3+4+5+6+7+8+Time before48 hours1 week30 days1 year5 years30 yearsAny ageOldest quakes are shown in yellow, most recent in red.[quakes -][quakes +][smaller][bigger]