Light magnitude 3.9 earthquake at 103 km depth20 Sep 01:39 UTC: First to report: EMSC after 5 minutes.20 Sep 01:46: Now using data updates from CSN20 Sep 01:52: Hypocenter depth recalculated from 72.00 to 103.00 km (from 45 to 64 mi). Epicenter location corrected by 9.4 km (5.8 mi) towards ENE.I didn't feel itI felt this quakeEarthquake detailsDate & timeSep 20, 2025 01:35:10 UTC - Local time at epicenterFriday, Sep 19, 2025, at 10:35 pm (GMT -3)StatusconfirmedMagnitude3.9Depth103 kmEpicenter latitude / longitude22.779°S / 68.691°WProvincia de El Loa, Region de Antofagasta, ChileAlso near: Bolivia 83 km (52 mi) awaySeismic antipode22.779°N / 111.309°EShaking intensityII Very weak shakingFelt0 reportsPrimary data sourceCSN (National Seismological Center (Centro Sismológico Nacional))Nearest volcanoSairecabur (82 km / 51 mi)Weather at epicenter at time of quakeClear Sky 9°C (48 F), humidity: 21%, wind: 1 m/s (1 kts) from SSEEstimated seismic energy released4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) | equivalent to ONE quake of magnitude 3.9 | about seismic energy20 minutes agoSep 20, 2025 01:35 GMT / Sep 19, 2025 10:35 pm (GMT -3)Lat / Lng: -22.779 / -68.691: 42 km Al SE De CalamaSource: CSNOther sources: EMSC: 3.9 / 72 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22184677',-22.77900,-68.69100,'20 minutes ago: Mag. 3.9, 42 km Al SE De Calama',html,'quakes-5-24.png',18,18,9,9,124]); 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 ChileNearby placesThe closest larger town where the quake might have been felt is Calama, a city with more than 170,000 inhabitants in Chile, in 43 km (27 mi) distance northwest of the epicenter. People likely experienced very weak shaking there.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry43 km (27 mi)NW of epicenterCalama(pop: 165,700)II: Very weakProvincia de El Loa, Region de AntofagastaChile52 km (33 mi)E of epicenterSan Pedro de Atacama(pop: 2,000)II: Very weakProvincia de El Loa, Region de AntofagastaChile66 km (41 mi)W of epicenterSierra Gorda(pop: 477)II: Very weakProvincia de Antofagasta, Region de AntofagastaChile111 km (69 mi)NW of epicenterMaria Elena(pop: 4,900)II: Very weakProvincia de Tocopilla, Region de AntofagastaChile133 km (83 mi)SW of epicenterBaquedano(pop: 858)I: Not feltProvincia de Antofagasta, Region de AntofagastaChile152 km (94 mi)NW of epicenterQuillagua(pop: 141)I: Not feltProvincia de Tocopilla, Region de AntofagastaChile173 km (107 mi)NW of epicenterTocopilla(pop: 24,500)I: Not feltRegion de AntofagastaChile179 km (111 mi)N of epicenterOllagüe(pop: 134)I: Not feltProvincia de El Loa, Region de AntofagastaChile183 km (114 mi)W of epicenterMejillones(pop: 12,800)I: Not feltProvincia de Antofagasta, Region de AntofagastaChile199 km (124 mi)SW of epicenterAntofagasta(pop: 352,600)I: Not feltRegion de AntofagastaChile209 km (130 mi)N of epicenterHuatacondo(pop: 55)I: Not feltProvincia del Tamarugal, TarapacáChile216 km (134 mi)NW of epicenterCaleta Chipana(pop: 84)I: Not feltProvincia de Iquique, TarapacáChile227 km (141 mi)NE of epicenterCulpina K(pop: 71)I: Not feltDepartamento de PotosiBolivia240 km (149 mi)NE of epicenterSan Cristobal(pop: 75)I: Not feltDepartamento de PotosiBolivia248 km (154 mi)NW of epicenterOficina Victoria(pop: 83)I: Not feltProvincia del Tamarugal, TarapacáChile250 km (155 mi)NW of epicenterRio Seco(pop: 145)I: Not feltProvincia de Iquique, TarapacáChile256 km (159 mi)N of epicenterColonia Pintados(pop: 143)I: Not feltProvincia del Tamarugal, TarapacáChile263 km (163 mi)N of epicenterPica(pop: 9,300)I: Not feltProvincia del Tamarugal, TarapacáChile278 km (173 mi)NW of epicenterChanavayita(pop: 603)I: Not feltProvincia de Iquique, TarapacáChile287 km (178 mi)NW of epicenterPlaya Quinteros(pop: 20)I: Not feltProvincia de Iquique, TarapacáChile290 km (180 mi)N of epicenterLa Tirana(pop: 1,530)I: Not feltProvincia del Tamarugal, TarapacáChile290 km (180 mi)SE of epicenterSan Antonio de los Cobres(pop: 4,000)I: Not feltDepartamento de Los Andes, Salta ProvinceArgentina302 km (188 mi)NW of epicenterLos Verdes(pop: 216)I: Not feltProvincia de Iquique, TarapacáChile315 km (196 mi)NW of epicenterAlto Hospicio(pop: 108,400)I: Not feltProvincia de Iquique, TarapacáChile322 km (200 mi)NE of epicenterUyuni(pop: 10,300)I: Not feltDepartamento de PotosiBolivia327 km (203 mi)NE of epicenterAtocha(pop: 1,830)I: Not feltDepartamento de PotosiBolivia330 km (205 mi)NE of epicenterColchani(pop: 12,000)I: Not feltDepartamento de PotosiBolivia342 km (213 mi)NE of epicenterSanta Barbara(pop: 2,430)I: Not feltDepartamento de PotosiBolivia366 km (227 mi)SE of epicenterCachi(pop: 2,190)I: Not feltSalta 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!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 GMT2025-09-20EpicenterAgency3.9103 km64 mi01:35:1042 km al SE de CalamaCSN (National Seismological Center (Centro Sismológico Nacional))3.972 km45 mi01:35:12ANTOFAGASTA, CHILE9.8 km (6.1 mi) epicenter difference with CSNEMSC (European-Mediterranean Seismological Centre)Earthquake statisticsAverage number of earthquakesBased on data from the past 25 years and our earthquake archive back to 1900, there are about 680 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.04 quakes per year (or 1 quake every 25 years)Mag. 6 or higher: 0.15 quakes per year (or 1 quake every 6.7 years)Mag. 5 or higher: 3.5 quakes per yearMag. 4 or higher: 54 quakes per year (or 4.5 quakes per month)Mag. 3 or higher: 316 quakes per year (or 26.3 quakes per month)Mag. 2 or higher: 680 quakes per year (or 57 quakes per month)Mag. 1 or higher: 682 quakes per year (or 57 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 5 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 23 to 27 years.Number of quakes per yearPrevious quakes in the same area of this earthquakeThe earthquake occurred 3 weeks after a magnitude 4.1 earthquake had hit on Monday, Sep 1, 2025, at 12:18 am local time (America/Santiago GMT -3) in 49 km (30 mi) distance to the north:Mag. 4.1 earthquake 15 km Al NE De Calama - Sep 1, 2025 - The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 7.4. It had occurred 1 year 9 weeks earlier, on Thursday, Jul 18, 2024, at 09:50 pm local time (America/Santiago GMT -4) in Region de Antofagasta, Chile:Mag. 7.4 earthquake 20 km al S de San Pedro de Atacama - Jul 18, 2024 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 8.2. It had occurred 75 years ago earlier, on Saturday, Dec 9, 1950, at 09:38 pm local time (Universal Time GMT +0) in Region de Antofagasta, Chile:Mag. 8.2 earthquake Antofagasta - Chile - Dec 9, 1950 - 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 TimeMagDepthDistanceLocationDetailsMapSep 17, 04:47 am (GMT -3)3.2130 km83 km (51 mi) to the N 56 km northeast of Calama, Provincia de El Loa, Region de Antofagasta, Chile I FELT ITInfoSep 16, 11:56 am (GMT -3)3.3110 km73 km (46 mi) to the N 38 km north of Calama, Provincia de El Loa, Region de Antofagasta, Chile I FELT ITInfoSep 16, 01:28 am (GMT -3)3.3129 km90 km (56 mi) to the SE 38 km Al O De Socaire I FELT ITInfoSep 15, 03:19 pm (GMT -3)3.1117 km93 km (58 mi) to the N 58 km Al N De Calama I FELT ITInfoSep 13, 09:04 am (GMT -3)3.2121 km36 km (22 mi) to the S 56 km Al O De San Pedro De Atacama I FELT ITInfoSep 1, 12:18 am (Santiago)4.1127 km49 km (30 mi) to the N 15 km Al NE De Calama 2 reportsInfoAug 24, 03:02 am (GMT -4)3.9163 km83 km (52 mi) to the E 31 km Al SE De San Pedro De AtacamaInfoAug 5, 12:59 am (Santiago)4.5104 km96 km (59 mi) to the N 60 km north of Calama, Provincia de El Loa, Region de Antofagasta, Chile 1 reportInfoJul 29, 06:33 am (Santiago)4.3152 km89 km (55 mi) to the SE 46 km southeast of San Pedro de Atacama, Provincia de El Loa, Region de Antofagasta, ChileInfoJul 24, 10:39 pm (GMT -4)3.9105 km55 km (34 mi) to the N 40 km Al NE De CalamaInfoMar 6, 01:21 pm (Santiago)6.194 km79 km (49 mi) to the SW 138 km east of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, Chile 28 reportsInfoJul 18, 2024 09:50 pm (Santiago)7.4145 km74 km (46 mi) to the SE 115 km southeast of Calama, Provincia de El Loa, Region de Antofagasta, Chile 170 reportsInfoDec 10, 2022 02:41 am (Santiago)5.6117 km66 km (41 mi) to the SE 21 km south of San Pedro de Atacama, Provincia de El Loa, Region de Antofagasta, Chile 10 reportsInfoJul 27, 2022 02:58 pm (Santiago)6.2112 km67 km (41 mi) to the N Antofagasta, Chile 38 reportsInfoApr 20, 2022 07:19 am (Santiago)5.7102 km49 km (30 mi) to the E 87 km southeast of Calama, Provincia de El Loa, Region de Antofagasta, Chile 13 reportsInfoJun 3, 2020 03:35 am (Santiago)6.7100 km55 km (34 mi) to the SE 35 km southwest of San Pedro de Atacama, Provincia de El Loa, Region de Antofagasta, Chile 81 reportsInfoOct 6, 2019 07:40 am (Santiago)5.7101 km93 km (58 mi) to the N 75 km northeast of Calama, Provincia de El Loa, Region de Antofagasta, Chile 5 reportsInfoJan 11, 2017 06:58 pm (Santiago)5.768 km97 km (60 mi) to the W Northern Chile 15 reportsInfoNov 1, 2015 11:16 am (Santiago)5.8104 km77 km (48 mi) to the SE 57 km south of San Pedro de Atacama, Provincia de El Loa, Region de Antofagasta, Chile 8 reportsInfoJun 10, 2015 09:52 am (Santiago)6.0121 km43 km (27 mi) to the NE 51 km east of Calama, Provincia de El Loa, Region de Antofagasta, Chile 5 reportsInfoApr 2, 2014 09:43 pm (GMT -5)7.722 km308 km (192 mi) to the NWSouth Pacific Ocean, 54 km southwest of Iquique, Provincia de Iquique, Tarapacá, Chile 7 reportsInfoFeb 12, 2014 07:43 am (Santiago)5.6100 km49 km (30 mi) to the N 16 km northeast of Calama, Provincia de El Loa, Region de Antofagasta, Chile 1 reportInfoAug 23, 2013 04:34 am (Santiago)5.8111 km57 km (35 mi) to the N 40 km northeast of Calama, Provincia de El Loa, Region de Antofagasta, Chile 3 reportsInfoJul 11, 2010 08:11 pm (Santiago)6.3115 km86 km (53 mi) to the NE 81 km northeast of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoMar 4, 2010 06:39 pm (Santiago)6.3114 km72 km (45 mi) to the NE 66 km northeast of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoJan 5, 2008 03:29 am (Santiago)5.7103 km22 km (13 mi) to the E Antofagasta, ChileInfoNov 14, 2007 11:40 am (Santiago)7.740 km137 km (85 mi) to the NW Antofagasta, ChileInfoNov 14, 2006 07:22 pm (Santiago)5.7108 km66 km (41 mi) to the SE 41 km SSW of San Pedro De Atacama, ChileInfoJun 19, 2001 05:32 am (Santiago)6.0147 km84 km (52 mi) to the E Potosi, BoliviaInfoMay 12, 2000 03:43 pm (Jujuy)7.2225 km244 km (152 mi) to the EDepartamento de Susques, 138 km northwest of San Salvador de Jujuy, Departamento de Doctor Manuel Belgrano, Jujuy Province, ArgentinaInfoMar 2, 1999 02:45 pm (Santiago)5.9111 km20 km (13 mi) to the E 52 km southeast of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoJan 30, 1998 08:16 am (Santiago)7.142 km200 km (124 mi) to the SW 35 km southeast of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJul 30, 1995 01:11 am (Santiago)8.046 km176 km (109 mi) to the W 36 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoNov 13, 1993 10:59 pm (Santiago)5.8112 km26 km (16 mi) to the NE 38 km east of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoFeb 5, 1988 10:01 am (Santiago)7.237 km282 km (175 mi) to the SW 123 km south of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJan 19, 1988 03:30 am (Santiago)7.033 km287 km (179 mi) to the SW Antofagasta, ChileInfoMar 31, 1987 10:48 pm (Jujuy)7.0249 km255 km (158 mi) to the E Jujuy, ArgentinaInfoMar 5, 1987 06:55 am (Santiago)7.035 km280 km (174 mi) to the SWSouth Pacific Ocean, 99 km south of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoMar 5, 1987 05:17 am (Santiago)7.662 km233 km (145 mi) to the SW 85 km south of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoDec 11, 1984 08:22 pm (Santiago)6.492 km42 km (26 mi) to the N 33 km E of Calama, ChileInfoMay 14, 1979 07:04 pm (Santiago)5.985 km45 km (28 mi) to the W Antofagasta, ChileInfoJan 2, 1974 06:42 am (Santiago)6.4105 km40 km (25 mi) to the NE 55 km east of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoDec 20, 1967 10:25 pm (Santiago)7.345 km164 km (102 mi) to the NW 37 km northeast of Tocopilla, Provincia de Tocopilla, Region de Antofagasta, ChileInfoAug 3, 1962 04:56 am (Santiago)6.8125 km91 km (56 mi) to the SE Antofagasta, ChileInfoDec 2, 1960 05:10 am (Santiago)7.335 km272 km (169 mi) to the SW 121 km south of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoOct 30, 1960 05:32 pm (Santiago)6.867 km25 km (15 mi) to the S 65 km south of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoDec 6, 1953 11:05 pm (Santiago)7.40 km76 km (47 mi) to the N 46 km northeast of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoDec 9, 1950 09:38 pm (Universal Time)8.2114 km155 km (96 mi) to the SEProvincia de El Loa, 255 km east of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoDec 26, 1948 04:12 am (Santiago)7.00 km44 km (28 mi) to the NW Chile: AntofagastaInfoJul 13, 1936 11:12 am (Universal Time)7.535 km262 km (163 mi) to the SW 121 km south of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoFeb 23, 1933 08:09 am (Universal Time)7.235 km295 km (183 mi) to the NW Tarapaca, ChileInfoOct 19, 1929 07:12 am (Santiago)6.865 km30 km (18 mi) to the E 63 km southeast of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoApr 28, 1926 11:13 am (Universal Time)7.190 km70 km (44 mi) to the E 90 km east of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoDec 23, 1916 09:24 am (Universal Time)6.875 km98 km (61 mi) to the WProvincia de Tocopilla, 81 km southwest of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoAug 25, 1916 05:44 am (La Paz)7.50 km210 km (131 mi) to the N Bolivia-northern ChileInfoOct 4, 1910 11:00 pm (Universal Time)7.2120 km92 km (57 mi) to the N 51 km north of Calama, Provincia de El Loa, Region de Antofagasta, 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]