Moderate magnitude 4.1 earthquake at 18 km depth4 Aug 06:38 UTC: First to report: BMKG after 7 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeAug 4, 2025 06:31:01 UTC - Local time at epicenterMonday, Aug 4, 2025, at 06:31 am (Universal Time GMT +0)Statusconfirmed (manually revised)Magnitude4.1Depth18 kmEpicenter latitude / longitude2.77°S / 136.11°EKabupaten Nabire, South Papua, IndonesiaSeismic antipode2.77°N / 43.89°WShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Estimated 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 energy7 minutes agoAug 4, 2025 06:31 GMT / Aug 4, 2025 06:31 am (Universal Time)Lat / Lng: -2.77 / 136.11: West Papua Region, IndonesiaSource: BMKGDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22021455',-2.77000,136.11000,'7 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 Nabire, a town with 44,000 inhabitants in Indonesia, in 94 km (59 mi) distance southwest 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)SW of epicenterNabire(pop: 43,900)II: Very weakCentral PapuaIndonesia177 km (110 mi)N of epicenterBiak(pop: 4,540)II: Very weakProvinsi PapuaIndonesia257 km (160 mi)NW of epicenterRansiki(pop: 16,200)I: Not feltKabupaten Manokwari Selatan, Provinsi Papua BaratIndonesia296 km (184 mi)W of epicenterBintuni(pop: 24,700)I: Not feltProvinsi Papua BaratIndonesia311 km (193 mi)NW of epicenterManokwari(pop: 107,300)I: Not feltProvinsi Papua BaratIndonesia348 km (216 mi)SE of epicenterWamena(pop: 41,800)I: Not feltKabupaten Jayawijaya, Highland PapuaIndonesia382 km (237 mi)SE of epicenterAgats(pop: 23,900)I: Not feltKabupaten Asmat, South PapuaIndonesia795 km (494 mi)SE of epicenterMerauke(pop: 102,400): Not feltSouth 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!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 GMT2025-08-4EpicenterAgency4.118 km11 mi06:31:01West Papua Region, IndonesiaBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)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 4, 2025 06:31 am (Universal Time)7 minutes ago4.118 km0 km - This quakeKabupaten Nabire, South Papua, IndonesiaMain 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 32.6 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 41.7 years)Mag. 6 or higher: 0.16 quakes per year (or 1 quake every 6.1 years)Mag. 5 or higher: 1.41 quakes per yearMag. 4 or higher: 10.4 quakes per yearMag. 3 or higher: 29.6 quakes per yearMag. 2 or higher: 33.2 quakes per year (or 2.8 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 7 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 earthquake