Moderate magnitude 4.5 earthquake at 106 km depth9 Oct 04:14 UTC: First to report: GFZ after 4 minutes.9 Oct 04:17: Hypocenter depth recalculated from 130.00 to 106.00 km (from 81 to 66 mi). Epicenter location corrected by 5.1 km (3.1 mi) towards E.I didn't feel itI felt this quakeEarthquake detailsDate & timeOct 9, 2025 04:10:58 UTC - Local time at epicenterThursday, Oct 9, 2025, at 01:10 am (GMT -3)StatusconfirmedMagnitude4.5Depth106 kmEpicenter latitude / longitude31.021°S / 67.117°WValle Fertil, San Juan Province, ArgentinaSeismic antipode31.021°N / 112.883°EQuality35 seismic stationsShaking intensityIII Weak shaking near epicenterFelt0 reportsPrimary data sourceGFZ (German Research Centre for Geosciences)Weather at epicenter at time of quakeClear Sky 20.4°C (69 F), humidity: 22%, wind: 8 m/s (15 kts) from NNWEstimated 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 energy17 minutes agoOct 9, 2025 04:10 GMT / Oct 9, 2025 01:10 am (GMT -3)Lat / Lng: -31.021 / -67.117: San Juan Province, ArgentinaSource: GFZOther sources: RaspberryShake: 4.5 / 106 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22255379',-31.02100,-67.11700,'17 minutes ago: Mag. 4.5, 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 Villa San Agustin, a town with 6,900 inhabitants in Argentina, in 54 km (34 mi) distance northwest of the epicenter. People likely experienced very weak shaking there. In the capital of Argentina, Buenos Aires, 909 km (565 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(*)RegionCountry54 km (34 mi)NW of epicenterVilla San Agustin(pop: 6,860)II: Very weakValle Fertil, San Juan ProvinceArgentina106 km (66 mi)NE of epicenterChamical(pop: 13,400)II: Very weakLa Rioja ProvinceArgentina131 km (81 mi)SW of epicenterCaucete(pop: 33,600)II: Very weakSan Juan ProvinceArgentina141 km (87 mi)SW of epicenterNueve de Julio(pop: 7,650)II: Very weakSan Juan ProvinceArgentina141 km (88 mi)W of epicenterVilla General San Martin(pop: 10,100)II: Very weakDepartamento de San Martin, San Juan ProvinceArgentina142 km (88 mi)W of epicenterAlbardon(pop: 20,400)II: Very weakDepartamento de Albardon, San Juan ProvinceArgentina143 km (89 mi)SW of epicenterSanta Lucia(pop: 43,600)II: Very weakDepartamento de Santa Lucia, San Juan ProvinceArgentina145 km (90 mi)W of epicenterChimbas(pop: 73,800)II: Very weakSan Juan ProvinceArgentina145 km (90 mi)W of epicenterVilla Paula de Sarmiento(pop: 19,100)II: Very weakDepartamento de Chimbas, San Juan ProvinceArgentina147 km (91 mi)SW of epicenterSan Juan(pop: 109,100)II: Very weakDepartamento de Capital, San Juan ProvinceArgentina158 km (98 mi)SW of epicenterPocito(pop: 41,000)II: Very weakSan Juan ProvinceArgentina164 km (102 mi)W of epicenterVilla Basilio Nievas(pop: 4,040)II: Very weakDepartamento de Zonda, San Juan ProvinceArgentina178 km (111 mi)NW of epicenterSan Jose de Jachal(pop: 21,000)II: Very weakDepartamento de Jachal, San Juan ProvinceArgentina181 km (112 mi)N of epicenterLa Rioja(pop: 178,900)II: Very weakCapital, La Rioja ProvinceArgentina210 km (130 mi)SE of epicenterVilla Dolores(pop: 28,000)II: Very weakDepartamento de San Javier, Cordoba ProvinceArgentina210 km (130 mi)N of epicenterChilecito(pop: 42,200)II: Very weakLa Rioja ProvinceArgentina223 km (139 mi)E of epicenterCruz del Eje(pop: 28,200)II: Very weakCordoba ProvinceArgentina251 km (156 mi)E of epicenterLa Falda(pop: 15,100)II: Very weakDepartamento de Punilla, Cordoba ProvinceArgentina252 km (157 mi)S of epicenterLa Punta(pop: 15,000)II: Very weakJuan Martin de Pueyrredon, San Luis ProvinceArgentina254 km (158 mi)E of epicenterCosquin(pop: 19,100)II: Very weakDepartamento de Punilla, Cordoba ProvinceArgentina254 km (158 mi)E of epicenterVilla Carlos Paz(pop: 69,500)II: Very weakDepartamento de Punilla, Cordoba ProvinceArgentina263 km (163 mi)SW of epicenterSan Martin(pop: 82,500)II: Very weakDepartamento de San Martin, Mendoza ProvinceArgentina263 km (164 mi)SW of epicenterMendoza(pop: 114,900)II: Very weakDepartamento de Guaymallen, Mendoza ProvinceArgentina263 km (164 mi)S of epicenterSan Luis(pop: 169,900)II: Very weakJuan Martin de Pueyrredon, San Luis ProvinceArgentina265 km (164 mi)E of epicenterAlta Gracia(pop: 40,400)II: Very weakDepartamento de Santa Maria, Cordoba ProvinceArgentina267 km (166 mi)E of epicenterRio Ceballos(pop: 16,600)II: Very weakDepartamento de Colon, Cordoba ProvinceArgentina267 km (166 mi)E of epicenterLa Calera(pop: 24,800)II: Very weakDepartamento de Colon, Cordoba ProvinceArgentina268 km (167 mi)E of epicenterUnquillo(pop: 15,400)II: Very weakDepartamento de Colon, Cordoba ProvinceArgentina270 km (168 mi)E of epicenterVilla Allende(pop: 21,700)II: Very weakDepartamento de Colon, Cordoba ProvinceArgentina272 km (169 mi)E of epicenterDean Funes(pop: 20,200)II: Very weakDepartamento de Ischilin, Cordoba ProvinceArgentina283 km (176 mi)E of epicenterCordoba(pop: 1,317,300)II: Very weakDepartamento de Capital, Cordoba ProvinceArgentina288 km (179 mi)E of epicenterJesus Maria(pop: 26,800)II: Very weakDepartamento de Colon, Cordoba ProvinceArgentina289 km (180 mi)SE of epicenterEmbalse(pop: 15,900)II: Very weakDepartamento de Calamuchita, Cordoba ProvinceArgentina312 km (194 mi)NE of epicenterCatamarca(pop: 159,100)I: Not feltDepartamento de Capital, Catamarca ProvinceArgentina312 km (194 mi)SE of epicenterRio Tercero(pop: 53,400)I: Not feltDepartamento de Tercero Arriba, Cordoba ProvinceArgentina312 km (194 mi)E of epicenterRio Segundo(pop: 18,200)I: Not feltDepartamento de Rio Segundo, Cordoba ProvinceArgentina334 km (207 mi)SE of epicenterVilla Mercedes(pop: 96,800)I: Not feltGeneral Pedernera, San Luis ProvinceArgentina351 km (218 mi)SE of epicenterRio Cuarto(pop: 157,000)I: Not feltDepartamento de Rio Cuarto, Cordoba ProvinceArgentina909 km (565 mi)SE of epicenterBuenos Aires(pop: 2,891,100): Not feltBuenos Aires F.D.ArgentinaNotes:(*) 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 GMT2025-10-9EpicenterAgency4.51± 0.17106 km66 mi±8.2 km04:10:58.55±0.19sSan Juan Province, ArgentinaEpicenter uncertainty: ± 2.7 kmGFZ (German Research Centre for Geosciences)4.5106 km66 mi04:10:58San Juan Province, Argentina0.3 km (0.2 mi) epicenter difference with GFZRaspberryShake (RaspberryShake)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)Oct 9, 2025 01:10 am (GMT -3)17 minutes ago4.5106 km0 km - This quake54 km SE of Villa San Agustin, Valle Fertil, San Juan Province, ArgentinaMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 55 years and our earthquake archive back to 1900, there are about 125 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 12.5 years)Mag. 5 or higher: 1.94 quakes per yearMag. 4 or higher: 9.5 quakes per yearMag. 3 or higher: 56 quakes per year (or 4.7 quakes per month)Mag. 2 or higher: 127 quakes per year (or 10.5 quakes per month)The area where this quake occurred has a high level of seismic activity. It has had at least 5 quakes above magnitude 6 since 1970, 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 earthquakeThe earthquake occurred 7 weeks after a magnitude 4.9 earthquake had hit on Friday, Aug 22, 2025, at 05:42 pm local time (America/Argentina/La Rioja GMT -3) in 89 km (56 mi) distance to the northwest:Mag. 4.9 earthquake Departamento de Independencia - La Rioja Province, Argentina - Aug 22, 2025 - The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 5.3. It had occurred 5 years earlier, on Wednesday, Dec 2, 2020, at 11:37 pm local time (America/Argentina/San Luis GMT -3) in San Luis Province, Argentina:Mag. 5.3 earthquake Ayacucho - San Juan Province, Argentina - Dec 2, 2020 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 7.4. It had occurred 48 years ago earlier, on Wednesday, Nov 23, 1977, at 06:26 am local time (America/Argentina/San Juan GMT -3) in San Juan Province, Argentina:Mag. 7.4 earthquake Departamento de Caucete - San Juan Province, Argentina - Nov 23, 1977 - 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 TimeMagDepthDistanceLocationDetailsMapAug 22, 05:42 pm (La Rioja)4.928 km89 km (56 mi) to the NWDepartamento de Independencia, 114 km southwest of La Rioja, Capital, La Rioja Province, Argentina 26 reportsInfoMay 23, 05:10 pm (San Juan)4.810 km88 km (55 mi) to the SWDepartamento de Caucete, 73 km east of San Juan, Departamento de Capital, San Juan Province, Argentina 2 reportsInfoApr 24, 01:07 am (San Juan)4.0134 km65 km (40 mi) to the S San Juan, ArgentinaInfoApr 2, 05:07 pm (San Juan)4.110 km99 km (61 mi) to the WDepartamento de Angaco, 63 km northeast of San Juan, Departamento de Capital, San Juan Province, ArgentinaInfoMar 28, 03:54 pm (La Rioja)4.111 km32 km (20 mi) to the N 26 km southeast of Villa San Agustin, Valle Fertil, San Juan Province, ArgentinaInfoSep 22, 2024 07:57 am (San Luis)4.5120 km96 km (60 mi) to the S 105 km NW of Villa General Roca, ArgentinaInfoMar 27, 2024 07:54 am (San Juan)4.7129 km76 km (47 mi) to the S 107 km E of Caucete, Argentina 1 reportInfoMay 29, 2023 12:02 pm (La Rioja)4.9127 km80 km (50 mi) to the SRosario Vera Penaloza, La Rioja Province, 139 km east of Caucete, Departamento de Caucete, San Juan Province, Argentina 8 reportsInfoApr 3, 2022 02:16 am (San Juan)5.1117 km51 km (32 mi) to the S 100 km SSE of San Agustín De Valle Fértil, Argentina 25 reportsInfoApr 1, 2022 08:28 am (San Juan)5.1108 km94 km (58 mi) to the SW 37 km NE of Caucete, Argentina 39 reportsInfoMay 31, 2021 11:48 pm (San Juan)5.080 km92 km (57 mi) to the NW 88 km east of San Jose de Jachal, Departamento de Jachal, San Juan Province, Argentina 15 reportsInfoDec 2, 2020 11:37 pm (San Luis)5.3127 km99 km (62 mi) to the SAyacucho, San Luis Province, 143 km east of San Juan, Departamento de Capital, San Juan Province, Argentina 10 reportsInfoApr 26, 2016 11:16 pm (San Juan)4.910 km78 km (49 mi) to the SW San Juan Province, ArgentinaInfoFeb 26, 2016 05:52 am (San Juan)5.336 km84 km (52 mi) to the SW San Juan Province, Argentina 4 reportsInfoJan 15, 2014 05:38 am (San Juan)5.2105 km97 km (60 mi) to the W 48 km NE of San Martín, Argentina 2 reportsInfoDec 25, 2010 03:38 am (La Rioja)4.9121 km64 km (40 mi) to the S 115 km WNW of Candelaria, ArgentinaInfoJan 31, 2008 07:16 am (La Rioja)4.935 km92 km (57 mi) to the NEGeneral Angel Penaloza, 100 km south of La Rioja, Capital, La Rioja Province, ArgentinaInfoSep 2, 2007 08:53 pm (San Juan)4.935 km100 km (62 mi) to the S 80 km ESE of Caucete, ArgentinaInfoMar 20, 2007 02:59 pm (San Juan)5.2134 km80 km (50 mi) to the S 113 km WNW of Candelaria, ArgentinaInfoSep 17, 2006 06:34 am (San Juan)6.2137 km79 km (49 mi) to the S San Juan, ArgentinaInfoOct 29, 2004 05:55 am (La Rioja)4.925 km53 km (33 mi) to the N 24 km ENE of San Agustín De Valle Fértil, ArgentinaInfoDec 12, 2002 01:03 am (San Juan)5.3126 km88 km (55 mi) to the S San Juan, ArgentinaInfoJul 2, 2002 05:21 pm (San Juan)5.527 km63 km (39 mi) to the WDepartamento de Caucete, 83 km northeast of Chimbas, Departamento de Chimbas, San Juan Province, ArgentinaInfoApr 27, 2002 08:53 pm (San Juan)5.233 km27 km (17 mi) to the W San Juan, ArgentinaInfoFeb 21, 2002 05:57 am (San Juan)5.4121 km78 km (49 mi) to the S 87 km E of Caucete, ArgentinaInfoDec 13, 2001 10:17 pm (San Juan)5.133 km97 km (60 mi) to the SW San Juan, ArgentinaInfoJun 7, 1998 01:10 pm (San Juan)5.9113 km88 km (54 mi) to the SW 45 km ENE of Caucete, ArgentinaInfoNov 27, 1979 02:37 pm (San Juan)5.810 km83 km (51 mi) to the SW 48 km NE of Caucete, ArgentinaInfoJan 17, 1978 08:33 am (San Juan)5.824 km77 km (48 mi) to the SW 56 km NE of Caucete, ArgentinaInfoDec 6, 1977 02:05 pm (San Juan)5.919 km60 km (37 mi) to the W 63 km SSW of San Agustín De Valle Fértil, ArgentinaInfoNov 23, 1977 11:02 pm (San Juan)6.323 km79 km (49 mi) to the SW 67 km E of Caucete, ArgentinaInfoNov 23, 1977 10:58 pm (San Juan)6.033 km70 km (43 mi) to the SW 65 km ENE of Caucete, ArgentinaInfoNov 23, 1977 08:58 am (San Juan)5.922 km67 km (42 mi) to the W San Juan, ArgentinaInfoNov 23, 1977 06:34 am (La Rioja)6.033 km23 km (14 mi) to the SE 77 km SE of San Agustín De Valle Fértil, ArgentinaInfoNov 23, 1977 06:26 am (San Juan)7.413 km62 km (38 mi) to the W San Juan, ArgentinaInfoSep 26, 1972 06:05 pm (San Juan)6.015 km104 km (65 mi) to the WDepartamento de Angaco, 72 km northeast of San Juan, Departamento de Capital, San Juan Province, ArgentinaInfoJul 27, 1917 02:51 am (Universal Time)7.060 km275 km (171 mi) to the W Chile-Argentina Border RegionInfoMap 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]