Moderate magnitude 4.0 earthquake at unknown depth20 Apr 01:17 UTC: First to report: BMKG after 5 minutes.20 Apr 01:19: Magnitude recalculated from 3.8 to 4.0. Epicenter location corrected by 3.5 km (2.1 mi) towards ENE.20 Apr 01:21: Now using data updates from EMSCI didn't feel itI felt this quakeEarthquake detailsDate & timeApr 20, 2026 01:11:37 UTC - Local time at epicenterMonday, Apr 20, 2026, at 01:11 am (Universal Time GMT +0)Statusconfirmed (manually revised)Magnitude4.00Depth10 kmEpicenter latitude / longitude11.13°S / 118.23°EIndonesiaSeismic antipode11.13°N / 61.77°WVenezuelaShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Weather at epicenter at time of quakeScattered Clouds 28.8°C (84 F), humidity: 74%, wind: 6 m/s (12 kts) from SEEstimated 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 energy19 minutes agoApr 20, 2026 01:11 GMT / Apr 20, 2026 01:11 am (Universal Time)Lat / Lng: -11.13 / 118.23: South OF Sumbawa, IndonesiaSource: EMSCOther sources: RaspberryShake: 3.9 / 20 km, BMKG: 3.9 / 20 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22925956',-11.13000,118.23000,'19 minutes ago: Mag. 4.0, South OF Sumbawa, Indonesia',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 BaliNearby placesThe closest larger town near the epicenter is Tambolaka, a town with 36,000 inhabitants in Indonesia, in 219 km (136 mi) distance to the northeast, but it is unlikely that the quake was felt there. DistancePlaceMax. shaking intensity(*)RegionCountry219 km (136 mi)NE of epicenterTambolaka(pop: 35,800)I: Not feltKabupaten Sumba Barat Daya, East Nusa TenggaraIndonesia276 km (172 mi)NE of epicenterWaingapu(pop: 35,900)I: Not feltKabupaten Sumba Timur, East Nusa TenggaraIndonesia290 km (180 mi)N of epicenterDompu(pop: 55,000)I: Not feltWest Nusa TenggaraIndonesia297 km (184 mi)N of epicenterSape(pop: 5,000)I: Not feltKabupaten Bima, West Nusa TenggaraIndonesia302 km (188 mi)N of epicenterBima(pop: 161,400)I: Not feltWest Nusa TenggaraIndonesia305 km (190 mi)NW of epicenterTaliwang(pop: 55,300)I: Not feltKabupaten Sumbawa Barat, West Nusa TenggaraIndonesia306 km (190 mi)N of epicenterSumbawa Besar(pop: 62,800)I: Not feltKabupaten Sumbawa, West Nusa TenggaraIndonesia313 km (195 mi)N of epicenterPototano(pop: 5,000)I: Not feltKabupaten Sumbawa, West Nusa TenggaraIndonesia314 km (195 mi)NE of epicenterKomodo(pop: 2,000)I: Not feltKabupaten Manggarai Barat, East Nusa TenggaraIndonesia333 km (207 mi)NW of epicenterSelong(pop: 92,500)I: Not feltKabupaten Lombok Timur, West Nusa TenggaraIndonesia339 km (211 mi)NW of epicenterLabuan Lombok(pop: 10,000)I: Not felt339 km (211 mi)NW of epicenterLabuan Lombok(pop: 10,000)I: Not feltIndonesia339 km (211 mi)NW of epicenterLabuan Lombok(pop: 10,000)I: Not feltWest Nusa TenggaraIndonesia345 km (214 mi)NE of epicenterLabuan Bajo(pop: 188,700)I: Not feltKabupaten Manggarai Barat, East Nusa TenggaraIndonesia345 km (214 mi)NW of epicenterPraya(pop: 35,200)I: Not feltKabupaten Lombok Tengah, West Nusa TenggaraIndonesia346 km (215 mi)NE of epicenterKondas(pop: 500)I: Not feltKabupaten Manggarai, East Nusa TenggaraIndonesia357 km (222 mi)NW of epicenterLembar(pop: 10,000)I: Not feltKabupaten Lombok Barat, West Nusa TenggaraIndonesia366 km (227 mi)NW of epicenterMataram(pop: 429,700)I: Not feltWest Nusa TenggaraIndonesia371 km (230 mi)NW of epicenterBangsal(pop: 100)I: Not feltWest Nusa TenggaraIndonesia372 km (231 mi)NE of epicenterRuteng(pop: 41,500)I: Not feltKabupaten Manggarai, East Nusa TenggaraIndonesia379 km (235 mi)NW of epicenterSenggigi(pop: 5,000)I: Not feltKabupaten Lombok Barat, West Nusa TenggaraIndonesia388 km (241 mi)NW of epicenterGili Air(pop: 1,800)I: Not feltKabupaten Lombok Utara, West Nusa TenggaraIndonesia413 km (257 mi)NW of epicenterKarangasem(pop: 31,900)I: Not feltProvinsi BaliIndonesia413 km (257 mi)NW of epicenterAmlapura(pop: 31,900)I: Not feltKabupaten Karang Asem, Provinsi BaliIndonesia414 km (257 mi)NW of epicenterAmlapura(pop: 31,900)I: Not feltKabupaten Karang Asem, Provinsi BaliIndonesia415 km (258 mi)NW of epicenterBedugul(pop: 20,000)I: Not feltKabupaten Karang Asem, Provinsi BaliIndonesia415 km (258 mi)NW of epicenterPadangbai(pop: 1000)I: Not feltKabupaten Karang Asem, Provinsi BaliIndonesia424 km (263 mi)NW of epicenterKlungkung(pop: 27,800)I: Not feltProvinsi BaliIndonesiaNotes:(*) 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 GMT2026-04-20EpicenterAgency4.010 km6.2 mi(*)01:11:37SOUTH OF SUMBAWA, INDONESIAEMSC (European-Mediterranean Seismological Centre)3.920 km12 mi01:11:39South of Sumbawa, Indonesia21 km (13 mi) epicenter difference with EMSCRaspberryShake (RaspberryShake)3.920 km12 mi01:11:39South of Sumbawa, Indonesia21 km (13 mi) epicenter difference with EMSCBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)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 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)Apr 20, 2026 01:11 am (Universal Time)19 minutes ago4.010 km0 km - This quakeIndian Ocean, 219 km SW of Tambolaka, IndonesiaMain 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 46 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 62.5 years)Mag. 7 or higher: 0.02 quakes per year (or 1 quake every 62.5 years)Mag. 6 or higher: 0.11 quakes per year (or 1 quake every 9 years)Mag. 5 or higher: 2.3 quakes per yearMag. 4 or higher: 14.9 quakes per yearMag. 3 or higher: 40 quakes per year (or 3.4 quakes per month)Mag. 2 or higher: 47 quakes per year (or 3.9 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 2 quakes above magnitude 8 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 60 to 65 years.Number of quakes per yearPrevious quakes in the same area of this earthquakeThe earthquake occurred 9 weeks after a magnitude 4.2 earthquake had hit on Wednesday, Feb 18, 2026, at 03:37 pm (GMT +8 local time) in 62 km (38 mi) distance to the east:Mag. 4.2 earthquake Indian Ocean - 188 km south of Tambolaka, Indonesia - Feb 18, 2026 - The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 5.4. It had occurred 5 years earlier, on Monday, Aug 23, 2021, at 04:40 pm (GMT +8 local time) in Indian Ocean, Indonesia:Mag. 5.4 earthquake Indian Ocean - 209 km southwest of Pulau Sumba Island, Indonesia - Aug 23, 2021 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 8.3. It had occurred 49 years ago earlier, on Friday, Aug 19, 1977, at 02:08 pm (GMT +8 local time) in East Nusa Tenggara, Indonesia:Mag. 8.3 earthquake Indian Ocean - 215 km southwest of Tambolaka, Indonesia - Aug 19, 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 TimeMagDepthDistanceLocationDetailsMapFeb 18, 03:37 pm (GMT +8)4.210 km62 km (38 mi) to the EIndian Ocean, 188 km south of Tambolaka, IndonesiaInfoFeb 15, 09:44 pm (GMT +8)4.910 km49 km (30 mi) to the SWIndian Ocean, 268 km southwest of Tambolaka, Indonesia 1 reportInfoFeb 10, 02:26 pm (GMT +8)4.110 km44 km (27 mi) to the WIndian Ocean, 263 km south of Pulau Sumbawa Island, IndonesiaInfoJan 28, 10:24 pm (GMT +8)4.010 km30 km (19 mi) to the SWIndian Ocean, 247 km southwest of Tambolaka, IndonesiaInfoJan 19, 09:15 pm (GMT +8)4.755 km47 km (29 mi) to the EIndian Ocean, 211 km south of Tambolaka, Indonesia 1 reportInfoAug 28, 2021 12:01 am (GMT +8)5.110 km51 km (32 mi) to the SEIndian Ocean, 242 km southwest of Pulau Sumba Island, Indonesia 3 reportsInfoAug 23, 2021 04:40 pm (GMT +8)5.432 km91 km (57 mi) to the EIndian Ocean, 209 km southwest of Pulau Sumba Island, IndonesiaInfoSep 28, 2020 11:44 am (GMT +8)5.237 km55 km (34 mi) to the SWIndian Ocean, 327 km southwest of Waingapu, Indonesia 1 reportInfoMar 16, 2020 05:05 am (GMT +8)5.010 km67 km (41 mi) to the NIndian Ocean, 200 km south of Pulau Sumbawa Island, Indonesia 1 reportInfoJan 7, 2020 06:31 am (GMT +8)5.110 km43 km (27 mi) to the SIndian Ocean, 266 km southwest of Pulau Sumba Island, Indonesia 1 reportInfoJan 3, 2019 12:49 pm (GMT +8)5.10 km38 km (24 mi) to the SIndian Ocean, 391 km southeast of Mataram, Indonesia 4 reportsInfoMar 16, 2016 09:11 pm (GMT +8)5.210 km88 km (55 mi) to the SIndian Ocean, 446 km southeast of Mataram, IndonesiaInfoNov 22, 2012 12:46 am (GMT +8)5.425 km41 km (26 mi) to the SWIndian Ocean, 367 km southeast of Mataram, IndonesiaInfoApr 25, 2009 06:55 am (GMT +8)5.110 km79 km (49 mi) to the NEIndian Ocean, 141 km southwest of Tambolaka, IndonesiaInfoJan 27, 2009 08:57 am (GMT +8)5.112 km79 km (49 mi) to the WIndian Ocean, 285 km southwest of Tambolaka, IndonesiaInfoFeb 21, 2007 07:12 am (GMT +8)5.240 km77 km (48 mi) to the EIndian Ocean, 204 km south of Tambolaka, IndonesiaInfoApr 29, 2006 12:06 pm (GMT +8)5.823 km16 km (9.8 mi) to the SEIndian Ocean, 221 km southwest of Tambolaka, IndonesiaInfoDec 29, 2002 03:25 pm (GMT +8)5.436 km32 km (20 mi) to the SIndian Ocean, 244 km southwest of Tambolaka, IndonesiaInfoDec 2, 2002 06:37 am (GMT +8)5.135 km97 km (60 mi) to the EIndian Ocean, 221 km south of Tambolaka, IndonesiaInfoNov 22, 2002 08:35 pm (GMT +8)5.635 km79 km (49 mi) to the SWIndian Ocean, 288 km southwest of Tambolaka, IndonesiaInfoOct 5, 2002 02:06 pm (Universal Time)5.235 km90 km (56 mi) to the NIndian Ocean, 137 km southwest of Tambolaka, IndonesiaInfoSep 29, 2002 09:33 am (GMT +8)5.42 km86 km (54 mi) to the SWIndian Ocean, 299 km southwest of Tambolaka, IndonesiaInfoSep 7, 2002 08:57 pm (GMT +8)5.336 km42 km (26 mi) to the SEIndian Ocean, 226 km south of Tambolaka, IndonesiaInfoJun 22, 2002 04:58 pm (GMT +8)5.5143 km92 km (57 mi) to the WIndian Ocean, 237 km south of Pulau Sumbawa Island, IndonesiaInfoNov 9, 2000 04:05 pm (GMT +8)5.2160 km97 km (60 mi) to the NEIndian Ocean, 141 km south of Tambolaka, IndonesiaInfoJul 7, 1997 04:27 am (GMT +8)5.936 km61 km (38 mi) to the SIndian Ocean, 301 km southwest of Pulau Sumba Island, IndonesiaInfoFeb 12, 1996 05:08 pm (GMT +8)6.18 km49 km (30 mi) to the EIndian Ocean, 190 km south of Tambolaka, IndonesiaInfoOct 6, 1980 01:18 am (GMT +8)5.733 km77 km (48 mi) to the WIndian Ocean, 283 km southwest of Tambolaka, IndonesiaInfoOct 31, 1977 04:14 pm (GMT +8)6.333 km34 km (21 mi) to the SIndian Ocean, 249 km southwest of Tambolaka, IndonesiaInfoSep 23, 1977 01:57 pm (GMT +8)6.033 km8.6 km (5.3 mi) to the SIndian Ocean, 227 km southwest of Tambolaka, IndonesiaInfoAug 20, 1977 12:20 pm (GMT +8)6.033 km3.6 km (2.2 mi) to the NIndian Ocean, 216 km southwest of Tambolaka, IndonesiaInfoAug 20, 1977 11:58 am (GMT +8)5.833 km93 km (58 mi) to the EIndian Ocean, 166 km south of Tambolaka, IndonesiaInfoAug 19, 1977 02:43 pm (GMT +8)6.133 km65 km (40 mi) to the NIndian Ocean, 157 km southwest of Tambolaka, IndonesiaInfoAug 19, 1977 02:08 pm (GMT +8)8.325 km17 km (10.3 mi) to the EIndian Ocean, 215 km southwest of Tambolaka, IndonesiaInfoAug 19, 1977 01:08 pm (GMT +8)6.133 km17 km (10.8 mi) to the EIndian Ocean, 212 km southwest of Tambolaka, IndonesiaInfoMap 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]