Light magnitude 3.9 earthquake at 31 km depth3 Aug 05:17 UTC: First to report: BMKG after 4 minutes.3 Aug 05:23: Magnitude recalculated from 3.3 to 3.4. Hypocenter depth recalculated from 10.00 to 32.00 km (from 6.2 to 19.9 mi). Epicenter location corrected by 8.1 km (5 mi) towards ESE.3 Aug 05:29: Magnitude recalculated from 3.4 to 3.9. Hypocenter depth recalculated from 32.00 to 31.00 km (from 19.9 to 19.3 mi). Epicenter location corrected by 26 km (16 mi) towards S.I didn't feel itI felt this quakeEarthquake detailsDate & timeAug 3, 2026 05:12:42 UTC - Local time at epicenterMonday, Aug 3, 2026, at 02:12 pm (GMT +9)Statusconfirmed (manually revised)Magnitude3.9Depth31 kmEpicenter latitude / longitude3.31°S / 131.54°EIndonesiaSeismic antipode3.31°N / 48.46°WBrazilShaking intensityIII Weak shaking near epicenterFelt0 reportsPrimary data sourceBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Nearest volcanoBanda Api (229 km / 142 mi)Weather at epicenter at time of quakeLight Rain 25.5°C (78 F), humidity: 85%, wind: 9 m/s (18 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 energy30 minutes agoAug 3, 2026 05:12 GMT / Aug 3, 2026 02:12 pm (GMT +9)Lat / Lng: -3.31 / 131.54: West Papua Region, IndonesiaSource: BMKGOther sources: RaspberryShake: 3.9 / 31 km, EMSC: 3.3 / 10 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23239950',-3.31000,131.54000,'30 minutes ago: Mag. 3.9, West Papua Region, 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 Fakfak, a town with 19,000 inhabitants in Indonesia, in 94 km (59 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(*)RegionCountry94 km (59 mi)NE of epicenterFakfak(pop: 18,900)II: Very weakProvinsi PapuaIndonesia130 km (81 mi)E of epicenterMas(pop: 320)II: Very weakIndonesia214 km (133 mi)N of epicenterTeminabuan(pop: 19,500)I: Not feltKabupaten Sorong Selatan, Southwest PapuaIndonesia258 km (160 mi)NE of epicenterBintuni(pop: 24,700)I: Not feltProvinsi Papua BaratIndonesia272 km (169 mi)N of epicenterSorong(pop: 254,300)I: Not feltSouthwest PapuaIndonesia291 km (181 mi)SE of epicenterTual(pop: 90,000)I: Not feltMalukuIndonesia295 km (184 mi)N of epicenterFef(pop: 966)I: Not feltKabupaten Tambrauw, Southwest PapuaIndonesia391 km (243 mi)NE of epicenterManokwari(pop: 107,300)I: Not feltProvinsi Papua BaratIndonesiaNotes:(*) 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 GMT2026-08-3EpicenterAgency3.931 km19 mi05:12:42West Papua Region, IndonesiaBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)3.931 km19 mi05:12:42West Papua Region, Indonesia0 km (0 mi) epicenter difference with BMKGRaspberryShake (RaspberryShake)3.310 km6.2 mi(*)05:12:42CERAM SEA, INDONESIA29 km (18 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 26 years and our earthquake archive back to 1900, there are about 56 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.06 quakes per year (or 1 quake every 15.9 years)Mag. 5 or higher: 1.75 quakes per yearMag. 4 or higher: 16.2 quakes per yearMag. 3 or higher: 44 quakes per year (or 3.7 quakes per month)Mag. 2 or higher: 54 quakes per year (or 4.5 quakes per month)The area where this quake occurred has a high level of seismic activity. It has had at least 8 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 15 to 20 years.Number of quakes per yearPrevious quakes in the same area of this earthquake