Moderate magnitude 4.2 earthquake at 38 km depth16 Sep 23:56 UTC: First to report: EMSC after 4 minutes.16 Sep 23:58: Now using data updates from CSNI didn't feel itI felt this quakeEarthquake detailsDate & timeSep 16, 2025 23:53:06 UTC - Local time at epicenterTuesday, Sep 16, 2025, at 08:53 pm (GMT -3)StatusconfirmedMagnitude4.2Depth38 kmEpicenter latitude / longitude22.8°S / 70.52°WProvincia de Antofagasta, Region de Antofagasta, ChileSeismic antipode22.8°N / 109.48°EChinaShaking intensityIII Weak shaking near epicenterFelt0 reportsPrimary data sourceCSN (National Seismological Center (Centro Sismológico Nacional))Nearest volcanoSan Pedro (241 km / 150 mi)Weather at epicenter at time of quakeClear Sky 15.2°C (59 F), humidity: 80%, wind: 4 m/s (9 kts) from SSWEstimated seismic energy released1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) | equivalent to ONE quake of magnitude 4.2 | about seismic energy15 minutes agoSep 16, 2025 23:53 GMT / Sep 16, 2025 08:53 pm (GMT -3)Lat / Lng: -22.8 / -70.52: Chile: 34 km Al N De MejillonesSource: CSNOther sources: EMSC: 4.2 / 38 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22174113',-22.80000,-70.52000,'15 minutes ago: Mag. 4.2, Chile: 34 km Al N De Mejillones',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 ChileNearby placesThe closest larger town where the quake might have been felt is Antofagasta, a city with more than 350,000 inhabitants in Chile, in 96 km (59 mi) distance south 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.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry34 km (21 mi)S of epicenterMejillones(pop: 12,800)III: WeakProvincia de Antofagasta, Region de AntofagastaChile85 km (53 mi)N of epicenterTocopilla(pop: 24,500)II: Very weakRegion de AntofagastaChile91 km (57 mi)SE of epicenterBaquedano(pop: 858)II: Very weakProvincia de Antofagasta, Region de AntofagastaChile96 km (59 mi)S of epicenterAntofagasta(pop: 352,600)II: Very weakRegion de AntofagastaChile102 km (63 mi)NE of epicenterMaria Elena(pop: 4,900)II: Very weakProvincia de Tocopilla, Region de AntofagastaChile123 km (77 mi)E of epicenterSierra Gorda(pop: 477)II: Very weakProvincia de Antofagasta, Region de AntofagastaChile163 km (101 mi)NE of epicenterQuillagua(pop: 141)II: Very weakProvincia de Tocopilla, Region de AntofagastaChile168 km (105 mi)N of epicenterCaleta Chipana(pop: 84)II: Very weakProvincia de Iquique, TarapacáChile168 km (105 mi)E of epicenterCalama(pop: 165,700)II: Very weakProvincia de El Loa, Region de AntofagastaChile204 km (127 mi)N of epicenterRio Seco(pop: 145)II: Very weakProvincia de Iquique, TarapacáChile236 km (146 mi)N of epicenterChanavayita(pop: 603)I: Not feltProvincia de Iquique, TarapacáChile238 km (148 mi)E of epicenterSan Pedro de Atacama(pop: 2,000)I: Not feltProvincia de El Loa, Region de AntofagastaChile246 km (153 mi)N of epicenterOficina Victoria(pop: 83)I: Not feltProvincia del Tamarugal, TarapacáChile246 km (153 mi)N of epicenterPlaya Quinteros(pop: 20)I: Not feltProvincia de Iquique, TarapacáChile257 km (160 mi)NE of epicenterHuatacondo(pop: 55)I: Not feltProvincia del Tamarugal, TarapacáChile260 km (162 mi)N of epicenterColonia Pintados(pop: 143)I: Not feltProvincia del Tamarugal, TarapacáChile266 km (165 mi)N of epicenterLos Verdes(pop: 216)I: Not feltProvincia de Iquique, TarapacáChile285 km (177 mi)NE of epicenterPica(pop: 9,300)I: Not feltProvincia del Tamarugal, TarapacáChile285 km (177 mi)N of epicenterAlto Hospicio(pop: 108,400)I: Not feltProvincia de Iquique, TarapacáChile288 km (179 mi)N of epicenterLa Tirana(pop: 1,530)I: Not feltProvincia del Tamarugal, TarapacáChile290 km (180 mi)S of epicenterTaltal(pop: 10,000)I: Not feltProvincia de Antofagasta, Region de AntofagastaChile290 km (180 mi)N of epicenterIquique(pop: 191,500)I: Not feltTarapacáChile292 km (181 mi)NE of epicenterOllagüe(pop: 134)I: Not feltProvincia de El Loa, Region de AntofagastaChile293 km (182 mi)N of epicenterPozo Almonte(pop: 15,700)I: Not feltProvincia del Tamarugal, TarapacáChile306 km (190 mi)N of epicenterBaquedano(pop: 587)I: Not feltProvincia del Tamarugal, TarapacáChile321 km (200 mi)N of epicenterHuara(pop: 2,730)I: Not feltProvincia del Tamarugal, TarapacáChile332 km (206 mi)NE of epicenterMamiña(pop: 319)I: Not feltProvincia del Tamarugal, TarapacáChile337 km (209 mi)N of epicenterTarapaca(pop: 121)I: Not feltProvincia del Tamarugal, TarapacáChileNotes:(*) 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 GMT2025-09-16EpicenterAgency4.238 km24 mi23:53:0634 km al N de MejillonesCSN (National Seismological Center (Centro Sismológico Nacional))4.238 km24 mi23:53:06OFFSHORE ANTOFAGASTA, CHILE0 km (0 mi) epicenter difference with CSNEMSC (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 2 km2 (1 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)Sep 16, 2025 08:53 pm (GMT -3)15 minutes ago4.238 km0 km - This quakeSouth Pacific Ocean, 96 km N of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 25 years and our earthquake archive back to 1900, there are about 120 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: 0.22 quakes per year (or 1 quake every 4.5 years)Mag. 5 or higher: 2.3 quakes per yearMag. 4 or higher: 13 quakes per yearMag. 3 or higher: 55 quakes per year (or 4.6 quakes per month)Mag. 2 or higher: 122 quakes per year (or 10.1 quakes per month)Mag. 1 or higher: 124 quakes per year (or 10.4 quakes per month)The area where this quake occurred has a very 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 earthquakeThe earthquake occurred 36 weeks after a magnitude 4.6 earthquake had hit on Wednesday, Jan 8, 2025, at 04:30 pm local time (America/Santiago GMT -4) in 50 km (31 mi) distance to the southwest:Mag. 4.6 earthquake South Pacific Ocean - Region de Antofagasta, Chile - Jan 8, 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 115 km southeast of Calama - Region de Antofagasta, Chile - Jul 18, 2024 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 8.0. It had occurred 30 years ago earlier, on Sunday, Jul 30, 1995, at 01:11 am local time (America/Santiago GMT -4) in Region de Antofagasta, Chile:Mag. 8.0 earthquake 36 km north of Antofagasta - Region de Antofagasta, Chile - Jul 30, 1995 - 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 23, 07:34 pm (GMT -5)4.020 km47 km (29 mi) to the NSouth Pacific Ocean, 44 km southwest of Tocopilla, Provincia de Tocopilla, Region de Antofagasta, ChileInfoAug 10, 03:06 pm (Santiago)4.073 km99 km (61 mi) to the NE 3 km Al SO De María ElenaInfoJun 23, 09:50 am (Santiago)4.039 km31 km (19 mi) to the SESouth Pacific Ocean, 68 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoMar 30, 06:09 am (GMT -5)4.127 km2.8 km (1.8 mi) to the SWSouth Pacific Ocean, 94 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJan 15, 06:49 am (Santiago)4.167 km49 km (31 mi) to the EProvincia de Tocopilla, 88 km northeast of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, Chile 1 reportInfoJan 8, 04:30 pm (Santiago)4.623 km50 km (31 mi) to the SWSouth Pacific Ocean, 68 km northwest of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoDec 16, 2024 02:07 am (Santiago)4.651 km81 km (50 mi) to the NE 27 km southeast of Tocopilla, Provincia de Tocopilla, Region de Antofagasta, Chile 1 reportInfoDec 10, 2024 07:51 am (GMT -5)4.510 km97 km (60 mi) to the WSouth Pacific Ocean, 166 km northwest of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoOct 25, 2024 05:52 am (Santiago)4.245 km81 km (50 mi) to the NE 21 km southeast of Tocopilla, Provincia de Tocopilla, Region de Antofagasta, ChileInfoSep 26, 2024 07:16 pm (Santiago)4.235 km17 km (10.7 mi) to the SESouth Pacific Ocean, 81 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJul 18, 2024 09:50 pm (Santiago)7.4145 km253 km (157 mi) to the E 115 km southeast of Calama, Provincia de El Loa, Region de Antofagasta, Chile 170 reportsInfoJul 28, 2022 12:15 am (Santiago)6.154 km98 km (61 mi) to the NSouth Pacific Ocean, 23 km northwest of Tocopilla, Provincia de Tocopilla, Region de Antofagasta, Chile 64 reportsInfoApr 2, 2014 09:43 pm (GMT -5)7.722 km248 km (154 mi) to the NSouth Pacific Ocean, 54 km southwest of Iquique, Provincia de Iquique, Tarapacá, Chile 7 reportsInfoDec 16, 2007 04:09 am (Santiago)6.745 km39 km (24 mi) to the SE 81 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoDec 13, 2007 03:23 am (Santiago)6.216 km45 km (28 mi) to the S 52 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoDec 13, 2007 01:20 am (Santiago)6.015 km40 km (25 mi) to the S 56 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoNov 20, 2007 01:55 pm (Santiago)6.115 km14 km (8.4 mi) to the SSouth Pacific Ocean, 82 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoNov 17, 2007 01:54 pm (Santiago)5.915 km30 km (19 mi) to the SSouth Pacific Ocean, 69 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoNov 15, 2007 11:05 am (Santiago)6.826 km32 km (20 mi) to the SE 82 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoNov 15, 2007 11:03 am (Santiago)6.327 km14 km (8.6 mi) to the SESouth Pacific Ocean, 87 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoNov 14, 2007 11:40 am (Santiago)7.740 km89 km (55 mi) to the NE 36 km southeast of Tocopilla, Provincia de Tocopilla, Region de Antofagasta, ChileInfoJan 23, 2004 01:00 am (Santiago)5.972 km70 km (43 mi) to the SE 85 km northeast of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJan 8, 2000 07:59 am (Santiago)6.436 km58 km (36 mi) to the SE 61 km northeast of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJan 30, 1998 08:16 am (Santiago)7.142 km128 km (79 mi) to the S 35 km southeast of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoAug 2, 1995 09:57 pm (Santiago)6.417 km30 km (19 mi) to the SSouth Pacific Ocean, 69 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoAug 1, 1995 08:14 pm (Santiago)6.033 km50 km (31 mi) to the SSouth Pacific Ocean, 55 km northwest of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJul 30, 1995 05:05 pm (Santiago)6.214 km62 km (38 mi) to the SSouth Pacific Ocean, 40 km northwest of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJul 30, 1995 01:26 am (Santiago)6.733 km48 km (30 mi) to the S 48 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJul 30, 1995 01:11 am (Santiago)8.046 km64 km (40 mi) to the S 36 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoDec 9, 1994 11:39 pm (Santiago)6.037 km82 km (51 mi) to the SSouth Pacific Ocean, 24 km northwest of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoFeb 5, 1988 10:01 am (Santiago)7.237 km217 km (135 mi) to the S 123 km south of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJan 19, 1988 03:30 am (Santiago)7.033 km212 km (132 mi) to the S Antofagasta, ChileInfoMar 5, 1987 06:55 am (Santiago)7.035 km189 km (118 mi) to the SSouth Pacific Ocean, 99 km south of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoMar 5, 1987 05:17 am (Santiago)7.662 km180 km (112 mi) to the S 85 km south of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoOct 28, 1975 03:54 am (Santiago)6.338 km7 km (4.4 mi) to the SSouth Pacific Ocean, 89 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoDec 8, 1971 12:05 pm (Santiago)6.130 km15 km (9.5 mi) to the ESouth Pacific Ocean, 94 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoDec 4, 1970 01:08 pm (Santiago)6.539 km72 km (45 mi) to the SE 63 km northeast of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJun 19, 1970 06:56 am (Santiago)6.560 km65 km (40 mi) to the NSouth Pacific Ocean, 20 km southwest of Tocopilla, Provincia de Tocopilla, Region de Antofagasta, ChileInfoDec 20, 1967 10:25 pm (Santiago)7.345 km120 km (75 mi) to the NE 37 km northeast of Tocopilla, Provincia de Tocopilla, Region de Antofagasta, ChileInfoDec 3, 1963 11:03 pm (GMT +0)6.335 km59 km (36 mi) to the EProvincia de Antofagasta, 71 km south of Tocopilla, Provincia de Tocopilla, Region de Antofagasta, ChileInfoDec 2, 1960 05:10 am (Santiago)7.335 km216 km (134 mi) to the S 121 km south of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoNov 9, 1960 04:06 pm (Santiago)6.135 km54 km (34 mi) to the S 43 km north of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoOct 30, 1960 08:14 am (Santiago)6.135 km80 km (50 mi) to the S 23 km northeast of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJul 29, 1957 12:15 pm (GMT -5)6.515 km80 km (50 mi) to the SWSouth Pacific Ocean, 62 km northwest of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoDec 6, 1953 11:05 pm (Santiago)7.40 km203 km (126 mi) to the NE 46 km northeast of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoSep 6, 1948 08:10 am (Universal Time)6.035 km29 km (18 mi) to the NWSouth Pacific Ocean, 74 km southwest of Tocopilla, Provincia de Tocopilla, Region de Antofagasta, ChileInfoJul 18, 1943 07:55 am (Universal Time)6.034 km11 km (7 mi) to the NSouth Pacific Ocean, 75 km southwest of Tocopilla, Provincia de Tocopilla, Region de Antofagasta, ChileInfoJul 13, 1936 11:12 am (Universal Time)7.535 km217 km (135 mi) to the S Antofagasta, ChileInfoFeb 23, 1933 08:09 am (Universal Time)7.235 km256 km (159 mi) to the N Tarapaca, ChileInfoNov 20, 1928 08:35 pm (Universal Time)7.045 km62 km (38 mi) to the SE 65 km northeast of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoJan 1, 1926 09:37 pm (Universal Time)6.135 km79 km (49 mi) to the S 22 km northwest of Antofagasta, Provincia de Antofagasta, Region de Antofagasta, ChileInfoDec 23, 1916 09:24 am (Universal Time)6.875 km90 km (56 mi) to the EProvincia de Tocopilla, 81 km southwest of Calama, Provincia de El Loa, Region de Antofagasta, ChileInfoOct 4, 1910 11:00 pm (Universal Time)7.2120 km180 km (112 mi) to the NE 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]