Light magnitude 3.9 earthquake at unknown depth31 Oct 17:35 UTC: First to report: BMKG after 5 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeOct 31, 2025 17:30:32 UTC - Local time at epicenterFriday, Oct 31, 2025, at 05:30 pm (Universal Time GMT +0)Statusconfirmed (manually revised)Magnitude3.9Depth10 kmEpicenter latitude / longitude10.07°S / 118.8°EIndonesiaSeismic antipode10.07°N / 61.2°WShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Nearest volcanoDoro Saboke (159 km / 99 mi)Estimated 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 energy5 minutes agoOct 31, 2025 17:30 GMT / Oct 31, 2025 05:30 pm (Universal Time)Lat / Lng: -10.07 / 118.8: South of Sumbawa, IndonesiaSource: BMKGOther sources: RaspberryShake: 3.9 / 10 km, EMSC: 3.9 / 10 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22338088',-10.07000,118.80000,'5 minutes ago: Mag. 3.9, South of Sumbawa, Indonesia',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 BaliNearby placesThe closest larger town where the quake might have been felt is Tambolaka, a town with 36,000 inhabitants in Indonesia, in 86 km (53 mi) distance northeast 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(*)RegionCountry86 km (53 mi)NE of epicenterTambolaka(pop: 35,800)II: Very weakKabupaten Sumba Barat Daya, East Nusa TenggaraIndonesia167 km (104 mi)E of epicenterWaingapu(pop: 35,900)I: Not feltKabupaten Sumba Timur, East Nusa TenggaraIndonesia168 km (105 mi)N of epicenterSape(pop: 5,000)I: Not feltKabupaten Bima, West Nusa TenggaraIndonesia174 km (108 mi)N of epicenterDompu(pop: 55,000)I: Not feltWest Nusa TenggaraIndonesia179 km (111 mi)N of epicenterBima(pop: 161,400)I: Not feltWest Nusa TenggaraIndonesia181 km (113 mi)NE of epicenterKomodo(pop: 2,000)I: Not feltKabupaten Manggarai Barat, East Nusa TenggaraIndonesia212 km (132 mi)NE of epicenterLabuan Bajo(pop: 188,700)I: Not feltKabupaten Manggarai Barat, East Nusa TenggaraIndonesia215 km (133 mi)NE of epicenterKondas(pop: 500)I: Not feltKabupaten Manggarai, East Nusa TenggaraIndonesia232 km (144 mi)NW of epicenterSumbawa Besar(pop: 62,800)I: Not feltKabupaten Sumbawa, West Nusa TenggaraIndonesia234 km (146 mi)NW of epicenterPototano(pop: 5,000)I: Not feltKabupaten Sumbawa, West Nusa TenggaraIndonesia244 km (152 mi)NE of epicenterRuteng(pop: 41,500)I: Not feltKabupaten Manggarai, East Nusa TenggaraIndonesia260 km (161 mi)NW of epicenterTaliwang(pop: 55,300)I: Not feltKabupaten Sumbawa Barat, West Nusa TenggaraIndonesia292 km (181 mi)NW of epicenterLabuan Lombok(pop: 10,000)I: Not felt292 km (181 mi)NW of epicenterLabuan Lombok(pop: 10,000)I: Not feltIndonesia292 km (181 mi)NW of epicenterLabuan Lombok(pop: 10,000)I: Not feltWest Nusa TenggaraIndonesia295 km (183 mi)NW of epicenterSelong(pop: 92,500)I: Not feltKabupaten Lombok Timur, West Nusa TenggaraIndonesia316 km (197 mi)NW of epicenterPraya(pop: 35,200)I: Not feltKabupaten Lombok Tengah, West Nusa TenggaraIndonesia322 km (200 mi)NW of epicenterBangsal(pop: 100)I: Not feltWest Nusa TenggaraIndonesiaNotes:(*) 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 GMT2025-10-31EpicenterAgency3.910 km6.2 mi(*)17:30:32South of Sumbawa, IndonesiaBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)3.910 km6.2 mi(*)17:30:32South of Sumbawa, Indonesia0 km (0 mi) epicenter difference with BMKGRaspberryShake (RaspberryShake)3.910 km6.2 mi(*)17:30:32SOUTH OF SUMBAWA, INDONESIA0 km (0 mi) epicenter difference with BMKGEMSC (European-Mediterranean Seismological Centre)Notes:(*) A depth given as 10 km often means that the the depth of the quake could be not determined with sufficient accuracy.Earthquake statisticsAverage number of earthquakesBased on data from the past 25 years and our earthquake archive back to 1900, there are about 208 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.14 quakes per year (or 1 quake every 7.1 years)Mag. 5 or higher: 2.5 quakes per yearMag. 4 or higher: 32.9 quakes per year (or 2.7 quakes per month)Mag. 3 or higher: 127 quakes per year (or 10.6 quakes per month)Mag. 2 or higher: 206 quakes per year (or 17.1 quakes per month)Mag. 1 or higher: 208 quakes per year (or 17.3 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 18 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 5 to 10 years.Number of quakes per yearPrevious quakes in the same area of this earthquake