Moderate magnitude 4.1 earthquake at unknown depth4 Oct 23:11 UTC: First to report: BMKG after 6 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeOct 4, 2026 23:05:19 UTC - Local time at epicenterMonday, Oct 5, 2026, at 08:05 am (GMT +9)Statusconfirmed (manually revised)Magnitude4.1Depth10 kmEpicenter latitude / longitude4.53°S / 133.65°EProvinsi Papua Barat, IndonesiaSeismic antipode4.53°N / 46.35°WShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Weather at epicenter at time of quakeFew Clouds 24.8°C (77 F), humidity: 87%, wind: 4 m/s (7 kts) from SEEstimated seismic energy released8.9 x 1010 joules (24.8 megawatt hours, equivalent to 21.3 tons of TNT) | equivalent to ONE quake of magnitude 4.1 | about seismic energy9 minutes agoOct 4, 2026 23:05 GMT / Oct 5, 2026 08:05 am (GMT +9)Lat / Lng: -4.53 / 133.65: West Papua Region, IndonesiaSource: BMKGOther sources: RaspberryShake: 4.1 / 10 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23411239',-4.53000,133.65000,'9 minutes ago: Mag. 4.1, West Papua Region, 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 where the quake might have been felt is Dobo, a town with 52,000 inhabitants in Indonesia, in 151 km (94 mi) distance southeast 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(*)RegionCountry151 km (94 mi)SE of epicenterDobo(pop: 52,100)II: Very weakKabupaten Kepulauan Aru, MalukuIndonesia157 km (98 mi)NW of epicenterMas(pop: 320)II: Very weakIndonesia158 km (98 mi)SW of epicenterTual(pop: 90,000)II: Very weakMalukuIndonesia233 km (145 mi)NW of epicenterFakfak(pop: 18,900)I: Not feltProvinsi PapuaIndonesia243 km (151 mi)NE of epicenterNabire(pop: 43,900)I: Not feltCentral PapuaIndonesia270 km (167 mi)N of epicenterBintuni(pop: 24,700)I: Not feltProvinsi Papua BaratIndonesia410 km (255 mi)N of epicenterManokwari(pop: 107,300)I: Not feltProvinsi Papua BaratIndonesia412 km (256 mi)NE of epicenterSerui(pop: 13,600)I: Not feltKabupaten Kepulauan Yapen, Provinsi PapuaIndonesiaNotes:(*) 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 GMT2026-10-4EpicenterAgency4.110 km6.2 mi(*)23:05:19West Papua Region, IndonesiaBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)4.110 km6.2 mi(*)23:05:19West Papua Region, Indonesia0 km (0 mi) epicenter difference with BMKGRaspberryShake (RaspberryShake)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)Oct 5, 2026 08:05 am (GMT +9)9 minutes ago4.110 km0 km - This quakeAru Sea, 44 km SE of Pulau Adi Island, Provinsi Papua Barat, IndonesiaMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 26 years and our earthquake archive back to 1900, there are about 57 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 62.5 years)Mag. 6 or higher: 0.16 quakes per year (or 1 quake every 6.4 years)Mag. 5 or higher: 2.1 quakes per yearMag. 4 or higher: 26.5 quakes per yearMag. 3 or higher: 55 quakes per year (or 4.5 quakes per month)Mag. 2 or higher: 57 quakes per year (or 4.8 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 7 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 earthquake