Moderate magnitude 4.5 earthquake at 31 km depth3 Aug 02:29 UTC: First to report: BMKG after 5 minutes.3 Aug 02:31: Magnitude recalculated from 3.9 to 4.2. Hypocenter depth recalculated from 28.00 to 24.00 km (from 17.4 to 14.9 mi). Epicenter location corrected by 5 km (3.1 mi) towards SSE.3 Aug 02:35: Magnitude recalculated from 4.2 to 4.5. Hypocenter depth recalculated from 24.00 to 31.00 km (from 14.9 to 19.3 mi). Epicenter location corrected by 2.5 km (1.5 mi) towards WNW.Update Mon, 3 Aug 2026, 02:36Moderate earthquake of magnitude 4.5 just reported 54 km southeast of Sarmi, IndonesiaAn earthquake of magnitude 4.5 occurred in the morning on Monday, August 3rd, 2026, at 11:24 am local time near Sarmi, Sarmi Regency, Provinsi Papua, Indonesia, as reported by Indonesia's Meteorology, Climatology, and Geophysical Agency.According to preliminary data, the quake was located at a moderately shallow depth of 31. km. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.A second report was later issued by the citizen-seismograph network of RaspberryShake, which listed it as a magnitude 4.2 earthquake.Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.Weak shaking might have been felt in Sarmi (pop. 14,100) located 54 km from the epicenter.VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.If you were or still are in this area during the quake help others with your feedback and report it here.Download the Volcanoes & Earthquakes app and get one of the fastest seismic alerts online: Android | iOSI didn't feel itI felt this quakeEarthquake detailsDate & timeAug 3, 2026 02:24:22 UTC - Local time at epicenterMonday, Aug 3, 2026, at 11:24 am (GMT +9)Statusconfirmed (manually revised)Magnitude4.5Depth31 kmEpicenter latitude / longitude2.3°S / 138.93°EKabupaten Sarmi, South Papua, IndonesiaSeismic antipode2.3°N / 41.07°WShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Weather at epicenter at time of quakeBroken Clouds 34°C (93 F), humidity: 49%, wind: 1 m/s (2 kts) from NEstimated seismic energy released3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 tons of TNT) | equivalent to ONE quake of magnitude 4.5 | about seismic energy18 minutes agoAug 3, 2026 02:24 GMT / Aug 3, 2026 11:24 am (GMT +9)Lat / Lng: -2.3 / 138.93: West Papua, IndonesiaSource: BMKGOther sources: RaspberryShake: 4.5 / 31 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23239573',-2.30000,138.93000,'18 minutes ago: Mag. 4.5, West Papua, 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 Sarmi, a town with 14,000 inhabitants in Indonesia, in 54 km (33 mi) distance north of the epicenter. People likely experienced weak shaking there.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry54 km (33 mi)N of epicenterSarmi(pop: 14,100)III: WeakProvinsi PapuaIndonesia152 km (95 mi)S of epicenterKobakma(pop: 13,100)II: Very weakKabupaten Mamberamo Tengah, Highland PapuaIndonesia164 km (102 mi)S of epicenterKarubaga(pop: 6,700)II: Very weakKabupaten Tolikara, Highland PapuaIndonesia178 km (111 mi)E of epicenterSentani(pop: 44,800)II: Very weakKabupaten Jayapura, Provinsi PapuaIndonesia184 km (114 mi)SE of epicenterElelim(pop: 5,950)II: Very weakKabupaten Yalimo, Highland PapuaIndonesia188 km (117 mi)S of epicenterTiom(pop: 21,300)II: Very weakKabupaten Lanny Jaya, Highland PapuaIndonesia189 km (118 mi)SW of epicenterMulia(pop: 35,900)II: Very weakKabupaten Puncak Jaya, Central PapuaIndonesia192 km (119 mi)E of epicenterAbepura(pop: 62,200)II: Very weakKota Jayapura, Provinsi PapuaIndonesia200 km (124 mi)S of epicenterWamena(pop: 41,800)II: Very weakKabupaten Jayawijaya, Highland PapuaIndonesia200 km (125 mi)E of epicenterJayapura(pop: 404,000)II: Very weakProvinsi PapuaIndonesia263 km (163 mi)S of epicenterKenyam(pop: 6,390)II: Very weakKabupaten Nduga, Highland PapuaIndonesia267 km (166 mi)E of epicenterVanimo(pop: 11,200)II: Very weakWest Sepik ProvincePapua New Guinea298 km (185 mi)SW of epicenterBugalaga(pop: 3,580)II: Very weakKabupaten Intan Jaya, Central PapuaIndonesia359 km (223 mi)SW of epicenterTimika(pop: 142,900)I: Not feltKabupaten Mimika, Central PapuaIndonesia709 km (440 mi)S of epicenterMerauke(pop: 102,400)I: 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!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 GMT2026-08-3EpicenterAgency4.531 km19 mi02:24:22West Papua, IndonesiaBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)4.531 km19 mi02:24:22West Papua, Indonesia0 km (0 mi) epicenter difference with BMKGRaspberryShake (RaspberryShake)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 3 km2 (1 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 3 km (2 mi).[More info]Recorded aftershocks, latest first (0 quake)Aug 3, 2026 11:24 am (GMT +9)18 minutes ago4.531 km0 km - This quakeSouth Papua, 54 km S of Sarmi, Kabupaten Sarmi, Provinsi Papua, 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 212 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.04 quakes per year (or 1 quake every 25 years)Mag. 6 or higher: 0.37 quakes per year (or 1 quake every 2.7 years)Mag. 5 or higher: 6 quakes per yearMag. 4 or higher: 67 quakes per year (or 5.6 quakes per month)Mag. 3 or higher: 176 quakes per year (or 14.6 quakes per month)Mag. 2 or higher: 210 quakes per year (or 17.5 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 5 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 25 to 30 years.Number of quakes per yearPrevious quakes in the same area of this earthquake