Moderate magnitude 4.0 earthquake at 30 km depth23 Aug 02:53 UTC: First to report: EMSC after 3 minutes.23 Aug 02:56: Now using data updates from CSNI didn't feel itI felt this quakeEarthquake detailsDate & timeAug 23, 2025 02:51:03 UTC - Local time at epicenterFriday, Aug 22, 2025, at 09:51 pm (GMT -5)StatusconfirmedMagnitude4.0Depth30 kmEpicenter latitude / longitude31.619°S / 71.817°WProvincia de Choapa, Region de Coquimbo, ChileSeismic antipode31.619°N / 108.183°EChinaShaking intensityIII Weak shaking near epicenterFelt2 reportsPrimary data sourceCSN (National Seismological Center (Centro Sismológico Nacional))Weather at epicenter at time of quakeClear Sky 12.2°C (54 F), humidity: 62%, wind: 8 m/s (15 kts) from SSEEstimated 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 energy13 minutes ago reported feltAug 23, 2025 02:51 GMT / Aug 22, 2025 09:51 pm (GMT -5)Lat / Lng: -31.619 / -71.817: Chile: 42 km Al SO De Canela BajaSource: CSNOther sources: EMSC: 3.9 / 40 kmDetail info | Read user reports | You felt it? - Report it!';storedMarkers.push(['quake-22091123',-31.61900,-71.81700,'13 minutes ago: Mag. 4.0, Chile: 42 km Al SO De Canela Baja',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 Illapel, a town with 23,000 inhabitants in Chile, in 61 km (38 mi) distance east of the epicenter. People likely experienced very weak shaking there. In the capital of Chile, Santiago, 232 km (144 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(*)RegionCountry61 km (38 mi)E of epicenterIllapel(pop: 22,800)II: Very weakProvincia de Choapa, Region de CoquimboChile83 km (51 mi)E of epicenterSalamanca(pop: 13,300)II: Very weakProvincia de Choapa, Region de CoquimboChile108 km (67 mi)SE of epicenterLa Ligua(pop: 24,900)II: Very weakPetorca, Region de ValparaisoChile128 km (79 mi)NE of epicenterOvalle(pop: 77,100)II: Very weakProvincia de Limari, Region de CoquimboChile131 km (82 mi)NE of epicenterMonte Patria(pop: 13,900)II: Very weakProvincia de Limari, Region de CoquimboChile141 km (88 mi)SE of epicenterHacienda La Calera(pop: 49,100)II: Very weakQuillota, Region de ValparaisoChile150 km (93 mi)S of epicenterQuillota(pop: 67,800)II: Very weakRegion de ValparaisoChile158 km (98 mi)SE of epicenterLlaillay(pop: 16,600)II: Very weakSan Felipe de Aconcagua, Region de ValparaisoChile158 km (98 mi)S of epicenterVina del Mar(pop: 294,600)II: Very weakValparaiso, Region de ValparaisoChile159 km (99 mi)S of epicenterValparaiso(pop: 282,400)II: Very weakValparaiso, Region de ValparaisoChile162 km (101 mi)SE of epicenterSan Felipe(pop: 59,300)II: Very weakRegion de ValparaisoChile163 km (101 mi)S of epicenterQuilpue(pop: 130,300)II: Very weakMarga Marga, Region de ValparaisoChile164 km (102 mi)S of epicenterLimache(pop: 35,900)II: Very weakMarga Marga, Region de ValparaisoChile164 km (102 mi)S of epicenterVilla Alemana(pop: 97,300)II: Very weakMarga Marga, Region de ValparaisoChile177 km (110 mi)SE of epicenterLos Andes(pop: 56,900)II: Very weakRegion de ValparaisoChile191 km (119 mi)N of epicenterCoquimbo(pop: 161,300)I: Not feltProvincia de Elqui, Region de CoquimboChile198 km (123 mi)N of epicenterLa Serena(pop: 154,500)I: Not feltProvincia de Elqui, Region de CoquimboChile205 km (128 mi)NE of epicenterVicuna(pop: 13,500)I: Not feltProvincia de Elqui, Region de CoquimboChile205 km (128 mi)SE of epicenterLampa(pop: 29,300)I: Not feltChacabuco, Santiago MetropolitanChile215 km (134 mi)SE of epicenterChicureo Abajo(pop: 18,000)I: Not feltChacabuco, Santiago MetropolitanChile216 km (134 mi)S of epicenterCartagena(pop: 16,900)I: Not feltSan Antonio, Region de ValparaisoChile221 km (137 mi)S of epicenterSan Antonio(pop: 85,700)I: Not feltRegion de ValparaisoChile227 km (141 mi)SE of epicenterLo Prado(pop: 104,300)I: Not feltSantiago, Santiago MetropolitanChile232 km (144 mi)SE of epicenterSantiago(pop: 4,837,300)I: Not feltSantiago MetropolitanChile237 km (147 mi)S of epicenterMelipilla(pop: 63,100)I: Not feltSantiago MetropolitanChile238 km (148 mi)S of epicenterPenaflor(pop: 65,500)I: Not feltTalagante, Santiago MetropolitanChile242 km (150 mi)S of epicenterEl Monte(pop: 23,100)I: Not feltTalagante, Santiago MetropolitanChile242 km (151 mi)S of epicenterTalagante(pop: 51,800)I: Not feltSantiago MetropolitanChile243 km (151 mi)SE of epicenterSan Bernardo(pop: 249,900)I: Not feltMaipo, Santiago MetropolitanChile245 km (152 mi)SE of epicenterLa Pintana(pop: 201,200)I: Not feltSantiago, Santiago MetropolitanChile250 km (156 mi)SE of epicenterPuente Alto(pop: 568,100)I: Not feltCordillera, Santiago MetropolitanChile256 km (159 mi)SE of epicenterBuin(pop: 55,400)I: Not feltMaipo, Santiago MetropolitanChile263 km (164 mi)SE of epicenterPaine(pop: 32,800)I: Not feltMaipo, Santiago MetropolitanChile291 km (181 mi)S of epicenterGraneros(pop: 23,300)I: Not feltProvincia de Cachapoal, Region del Libertador General Bernardo O'HigginsChile301 km (187 mi)S of epicenterRancagua(pop: 212,700)I: Not feltProvincia de Cachapoal, Region del Libertador General Bernardo O'HigginsChile305 km (190 mi)S of epicenterMachali(pop: 27,600)I: Not feltProvincia de Cachapoal, Region del Libertador General Bernardo O'HigginsChile320 km (199 mi)S of epicenterSan Vicente(pop: 22,600)I: Not feltProvincia de Cachapoal, Region del Libertador General Bernardo O'HigginsChile321 km (200 mi)S of epicenterSan Vicente de Tagua Tagua(pop: 29,600)I: Not feltProvincia de Cachapoal, Region del Libertador General Bernardo O'HigginsChile323 km (200 mi)S of epicenterRengo(pop: 38,100)I: Not feltProvincia de Cachapoal, Region del Libertador General Bernardo O'HigginsChileNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quake (3)So far, we have received 3 reports for this quake. This section is being updated as new data comes in.User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.Translate164.1 km SSE of epicenter [Map] / not felt (reported through our app)Illapel (99.1 km ENE of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump / 1-2 sSalamanca (95.8 km E of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 15-20 sWhat is Intensity and the Mercalli Intensity Scale?The amount of shaking that occurs on the surface due to an earthquake is called the intensity. It is commonly measured on the so-called Modified Mercalli Intensity Scale (MMI) ranging from 1 (not felt) to 10 (extreme shaking), and given in Roman numerals as I,II,...IX, X, and often displayed with color codes ranging from light blue to dark red.Earthquake intensity depends mainly on the magnitude and depth of the quake as well as the distance from the epicenter: The further away, the less shaking intensity occurs.Read more about the MMI scale!Number of reports by intensityShaking intensityNumber of reportsMin-Max distance from epicenter (*)Average distance (*)I: Not felt1164–164 km (102–102 mi)164 km (102 mi)III: Weak shaking199–99 km (61–61 mi)99 km (61 mi)IV: Light shaking196–96 km (59–59 mi)96 km (59 mi)Notes(*) Reports are filtered to exclude those that are likely highly inaccurate or esaggerated.Only reports with latitude/longitude coordinate positions given (3 in total) could be used for geographic statistics.I didn't feel itI felt this quakeIf you were near the epicenter and felt it, please share your experience and submit a short "I felt it" report! Other users would love to hear about it!If you did NOT feel the quake although you were in the area, please report it as well! Your contribution is valuable to earthquake science and seismic hazard analysis.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 GMT2025-08-23EpicenterAgency4.030 km19 mi02:51:0342 km al SO de Canela BajaCSN (National Seismological Center (Centro Sismológico Nacional))3.940 km25 mi02:51:03OFFSHORE COQUIMBO, CHILE19 km (12 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 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)Aug 22, 2025 09:51 pm (GMT -5)13 minutes ago - felt4.030 km0 km - This quakeSouth Pacific Ocean, 61 km W of Illapel, Provincia de Choapa, Region de Coquimbo, 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 517 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 8 or higher: 0.02 quakes per year (or 1 quake every 41.7 years)Mag. 7 or higher: 0.03 quakes per year (or 1 quake every 31.3 years)Mag. 6 or higher: 0.39 quakes per year (or 1 quake every 2.6 years)Mag. 5 or higher: 5.4 quakes per yearMag. 4 or higher: 42 quakes per year (or 3.5 quakes per month)Mag. 3 or higher: 245 quakes per year (or 20.4 quakes per month)Mag. 2 or higher: 521 quakes per year (or 43 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 8 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 7 weeks after a magnitude 4.1 earthquake had hit on Sunday, Jul 6, 2025, at 01:20 pm local time (America/Santiago GMT -3) in 31 km (19 mi) distance to the southeast:Mag. 4.1 earthquake South Pacific Ocean - Region de Coquimbo, Chile - Jul 6, 2025 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 8.2. It had occurred 10 years ago earlier, on Wednesday, Sep 16, 2015, at 06:54 pm local time (America/Santiago GMT -4) in Region de Coquimbo, Chile:Mag. 8.2 earthquake 40 km west of Illapel - Region de Coquimbo, Chile - Sep 16, 2015 - 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 TimeMagDepthDistanceLocationDetailsMapJul 6, 01:20 pm (Santiago)4.136 km31 km (19 mi) to the SESouth Pacific Ocean, 37 km southwest of Illapel, Provincia de Choapa, Region de Coquimbo, ChileInfoJun 30, 05:12 am (Santiago)4.657 km66 km (41 mi) to the SE 26 km Al E De Los Vilos 1 reportInfoJun 24, 12:08 am (GMT -5)4.042 km75 km (47 mi) to the WSouth Pacific Ocean, 183 km northwest of Valparaiso, Valparaiso, Region de Valparaiso, ChileInfoMay 4, 11:17 pm (Santiago)4.988 km93 km (58 mi) to the E 15 km Al SE De Salamanca 98 reportsInfoApr 27, 05:10 pm (Santiago)4.550 km87 km (54 mi) to the NE 40 km southwest of Ovalle, Provincia de Limari, Region de Coquimbo, ChileInfoApr 10, 2018 06:19 am (Santiago)6.266 km71 km (44 mi) to the N 57 km southwest of Ovalle, Provincia de Limari, Region de Coquimbo, Chile 53 reportsInfoDec 8, 2016 04:42 pm (Santiago)6.528 km20 km (12 mi) to the NESouth Pacific Ocean, 47 km west of Illapel, Provincia de Choapa, Region de Coquimbo, Chile 7 reportsInfoNov 7, 2015 03:31 am (Santiago)6.639 km98 km (61 mi) to the NE 30 km south of Ovalle, Provincia de Limari, Region de Coquimbo, Chile 53 reportsInfoSep 21, 2015 01:39 pm (Santiago)6.533 km45 km (28 mi) to the E 20 km southwest of Illapel, Provincia de Choapa, Region de Coquimbo, Chile 33 reportsInfoSep 18, 2015 05:10 am (GMT -4)6.413 km66 km (41 mi) to the SChile (Peruvian Point of View) [Sea] 2 reportsInfoSep 17, 2015 01:10 am (Santiago)6.880 km81 km (50 mi) to the E 7.6 km southwest of Salamanca, Provincia de Choapa, Region de Coquimbo, Chile 7 reportsInfoSep 16, 2015 11:55 pm (Santiago)6.435 km50 km (31 mi) to the NEProvincia de Choapa, 84 km south of Ovalle, Provincia de Limari, Region de Coquimbo, Chile 3 reportsInfoSep 16, 2015 09:41 pm (Santiago)6.435 km58 km (36 mi) to the NE Near Coast of Central Chile [Land: Chile]InfoSep 16, 2015 07:18 pm (Santiago)6.431 km38 km (23 mi) to the E 24 km west of Illapel, Provincia de Choapa, Region de Coquimbo, Chile 1 reportInfoSep 16, 2015 06:59 pm (Santiago)6.427 km6.8 km (4.2 mi) to the ESouth Pacific OceanInfoSep 16, 2015 06:54 pm (Santiago)8.223 km25 km (16 mi) to the NE 40 km west of Illapel, Provincia de Choapa, Region de Coquimbo, Chile 103 reportsInfoAug 12, 2015 08:56 am (GMT -4)6.410 km101 km (63 mi) to the NSouth Pacific Ocean, 332 km northwest of Santiago, Santiago, Santiago Metropolitan, ChileInfoMar 11, 2010 10:55 am (Santiago)7.018 km301 km (187 mi) to the SProvincia de Cardenal Caro, 99 km west of Rancagua, Provincia de Cachapoal, Region del Libertador General Bernardo O'Higgins, ChileInfoDec 18, 2008 05:19 pm (GMT -4)6.218 km94 km (58 mi) to the S 46 km W of La Ligua, ChileInfoOct 12, 2006 02:05 pm (Santiago)6.431 km59 km (36 mi) to the NE Coquimbo, ChileInfoJul 29, 1998 03:14 am (Santiago)6.451 km92 km (57 mi) to the SE 16 km north of La Ligua, Petorca, Region de Valparaiso, ChileInfoJan 12, 1998 06:14 am (Santiago)6.635 km80 km (50 mi) to the NE 47 km southwest of Ovalle, Provincia de Limari, Region de Coquimbo, ChileInfoOct 14, 1997 09:03 pm (Santiago)7.158 km95 km (59 mi) to the NE 37 km south of Ovalle, Provincia de Limari, Region de Coquimbo, ChileInfoNov 27, 1992 11:13 pm (GMT -4)6.512 km36 km (22 mi) to the NWSouth Pacific Ocean, 85 km northwest of Illapel, Provincia de Choapa, Region de Coquimbo, ChileInfoApr 8, 1985 09:56 pm (Santiago)7.238 km280 km (174 mi) to the S 59 km S of San Antonio, ChileInfoMar 3, 1985 08:32 pm (Santiago)7.433 km177 km (110 mi) to the SValparaiso, 27 km southwest of Quilpue, Marga Marga, Region de Valparaiso, ChileInfoMar 3, 1985 06:47 pm (Santiago)8.033 km169 km (105 mi) to the SSouth Pacific Ocean, 25 km southwest of Valparaiso, Valparaiso, Region de Valparaiso, ChileInfoNov 7, 1981 12:29 am (Santiago)6.865 km79 km (49 mi) to the SEPetorca, 77 km north of Quillota, Quillota, Region de Valparaiso, ChileInfoOct 15, 1981 11:25 pm (GMT -4)7.233 km206 km (128 mi) to the SWSouth Pacific Ocean, 135 km west of Valparaiso, Valparaiso, Region de Valparaiso, ChileInfoJul 11, 1971 05:51 am (GMT -4)6.335 km74 km (46 mi) to the SSouth Pacific Ocean, 84 km north of Valparaiso, Valparaiso, Region de Valparaiso, ChileInfoJul 8, 1971 11:03 pm (Santiago)7.860 km130 km (81 mi) to the SE 24 km northeast of Hacienda La Calera, Quillota, Region de Valparaiso, ChileInfoMar 28, 1965 12:33 pm (Santiago)7.470 km115 km (71 mi) to the SE 7.8 km south of La Ligua, Petorca, Region de Valparaiso, ChileInfoMar 22, 1965 06:56 pm (Santiago)6.249 km46 km (28 mi) to the SESouth Pacific Ocean, 54 km southwest of Illapel, Provincia de Choapa, Region de Coquimbo, ChileInfoDec 20, 1953 05:19 am (Santiago)6.225 km22 km (14 mi) to the SSouth Pacific Ocean, 61 km west of Illapel, Provincia de Choapa, Region de Coquimbo, ChileInfoMay 22, 1943 09:02 am (Universal Time)6.235 km84 km (52 mi) to the N 56 km southwest of Ovalle, Provincia de Limari, Region de Coquimbo, ChileInfoApr 15, 1943 11:34 am (Universal Time)6.425 km49 km (30 mi) to the SSouth Pacific Ocean, 74 km southwest of Illapel, Provincia de Choapa, Region de Coquimbo, ChileInfoApr 7, 1943 11:17 pm (Universal Time)6.425 km5.5 km (3.4 mi) to the NWSouth Pacific Ocean, 64 km west of Illapel, Provincia de Choapa, Region de Coquimbo, ChileInfoApr 7, 1943 01:07 pm (Universal Time)6.245 km80 km (50 mi) to the N 49 km SW of Ovalle, ChileInfoApr 6, 1943 04:07 pm (Universal Time)8.135 km58 km (36 mi) to the NE 45 km northwest of Illapel, Provincia de Choapa, Region de Coquimbo, ChileInfoNov 29, 1932 11:11 am (Universal Time)6.535 km77 km (48 mi) to the SEProvincia de Choapa, Region de Coquimbo, 32 km north of La Ligua, Petorca, Region de Valparaiso, ChileInfoMar 18, 1931 08:02 am (Universal Time)7.235 km258 km (160 mi) to the S Valparaiso, ChileInfoOct 2, 1906 02:33 pm (Universal Time)6.315 km62 km (39 mi) to the SSouth Pacific Ocean, Region de Coquimbo, 97 km north of Vina del Mar, Valparaiso, Region de Valparaiso, ChileInfoAug 17, 1906 12:40 am (Universal Time)8.235 km95 km (59 mi) to the SE 17 km west of La Ligua, Petorca, Region de Valparaiso, 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]