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The quake had a moderate depth of 79 km (49 mi) and was not felt (or at least not reported so).Quake Data | Interactive map | User reports | Aftershocks | Earlier quakes here | Quakes in Papua New Guinea | Quakes in Indonesia | East Sepik Province | West Sepik Province | Enga ProvinceHint: Click on the image to see different maps of this quake!Moderate magnitude 4.5 earthquake at 79 km depth28 Aug 08:35 UTC: First to report: BMKG after 5 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeAug 28, 2025 08:29:49 UTC - Local time at epicenterThursday, Aug 28, 2025, at 08:29 am (Universal Time GMT +0)Statusconfirmed (manually revised)Magnitude4.5Depth79 kmEpicenter latitude / longitude3.83°S / 143.56°EEast Sepik Province, Papua New GuineaSeismic antipode3.83°N / 36.44°WShaking intensityIII Weak shaking near epicenterFelt0 reportsPrimary data sourceBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Nearest volcanoKairinu (74 km / 46 mi)Estimated 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 energy6 minutes agoAug 28, 2025 08:29 GMT / Aug 28, 2025 08:29 am (Universal Time)Lat / Lng: -3.83 / 143.56: Near North Coast of Papua New GuineaSource: BMKGDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22109309',-3.83000,143.56000,'6 minutes ago: Mag. 4.5, Near North Coast of Papua New Guinea',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 Papua New GuineaNearby placesThe closest larger town where the quake might have been felt is Wewak, a town with 18,000 inhabitants in Papua New Guinea, in 32 km (20 mi) distance north of the epicenter. People likely experienced weak shaking there. In the capital of Papua New Guinea, Port Moresby, 743 km (462 mi) away from the epicenter, the earthquake could not be felt.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry32 km (20 mi)N of epicenterWewak(pop: 18,200)III: WeakEast Sepik ProvincePapua New Guinea62 km (38 mi)SE of epicenterAngoram(pop: 1,600)III: WeakEast Sepik ProvincePapua New Guinea93 km (58 mi)SW of epicenterAmbunti(pop: 2,070)II: Very weakEast Sepik ProvincePapua New Guinea155 km (96 mi)NW of epicenterAitape(pop: 5,550)II: Very weakWest Sepik ProvincePapua New Guinea169 km (105 mi)S of epicenterLaiagam(pop: 921)II: Very weakEnga ProvincePapua New Guinea186 km (115 mi)S of epicenterWabag(pop: 3,960)II: Very weakEnga ProvincePapua New Guinea187 km (116 mi)S of epicenterPorgera(pop: 1,580)II: Very weakEnga ProvincePapua New Guinea237 km (148 mi)S of epicenterMount Hagen(pop: 33,600)II: Very weakWestern Highlands ProvincePapua New Guinea241 km (150 mi)S of epicenterTari(pop: 8,190)II: Very weakPapua New Guinea258 km (160 mi)S of epicenterMendi(pop: 26,300)II: Very weakSouthern Highlands ProvincePapua New Guinea277 km (172 mi)S of epicenterIalibu(pop: 6,920)II: Very weakSouthern Highlands ProvincePapua New Guinea281 km (175 mi)NW of epicenterVanimo(pop: 11,200)II: Very weakWest Sepik ProvincePapua New Guinea285 km (177 mi)SW of epicenterOlsobip(pop: 1000)II: Very weakWestern ProvincePapua New Guinea289 km (180 mi)SE of epicenterKundiawa(pop: 9,380)II: Very weakChimbu ProvincePapua New Guinea291 km (181 mi)SE of epicenterMadang(pop: 27,400)II: Very weakMadang ProvincePapua New Guinea322 km (200 mi)SE of epicenterGoroka(pop: 18,500)I: Not feltEastern Highlands ProvincePapua New Guinea347 km (216 mi)NW of epicenterJayapura(pop: 404,000)I: Not feltProvinsi PapuaIndonesia358 km (222 mi)SW of epicenterKiunga(pop: 11,500)I: Not feltWestern ProvincePapua New Guinea374 km (233 mi)SE of epicenterKainantu(pop: 8,510)I: Not feltEastern Highlands ProvincePapua New Guinea743 km (462 mi)SE of epicenterPort Moresby(pop: 283,700)I: Not feltNational Capital DistrictPapua New GuineaNotes:(*) 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 GMT2025-08-28EpicenterAgency4.579 km49 mi08:29:49Near North Coast of Papua New GuineaBMKG (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 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 28, 2025 08:29 am (Universal Time)6 minutes ago4.579 km0 km - This quakeNear North Coast of Papua New GuineaMain Shock (this quake)MoreMap of aftershocksPrevious quakes in the same area of this earthquake6 minutes agoAug 28, 2025 08:29 GMT / Aug 28, 2025 08:29 am (Universal Time)Lat / Lng: -3.83 / 143.56: Near North Coast of Papua New GuineaSource: BMKGDetail info | You felt it? - Report it!',4.5,45, '#bb202a', 0.9,1.5, '#bb202a', 0.27);map2.addToMap('thisQuake',-3.83,143.56,'6 minutes ago: Mag. 4.5, Near North Coast of Papua New Guinea','Earthquake: Mag 4.5 / 79 km (49 mi) depth6 minutes agoAug 28, 2025 08:29 GMT / Aug 28, 2025 08:29 am (Universal Time)Lat / Lng: -3.83 / 143.56: Near North Coast of Papua New GuineaSource: BMKGDetail info | You felt it? - Report it!','default'); // this will be local to this table obj function putQuakeOnMap(id,lat,lon,time,title,html,mag,zIndex) { qTableOlder.putQuakeOnMap(id,lat,lon,time,title,html,mag,zIndex); } map2.circleScale=0.5;qTableOlder.usePalette=1;qTableOlder.startVal=qTableOlder.referenceTime-(80*365.25*86400);qTableOlder.endVal=qTableOlder.referenceTime; qTableOlder.assignMap(map2); (async function(){await new Promise(r => setTimeout(r,4000));map2.map.setZoom(7)})(); })(); (async function(){while(typeof mkRequest=="undefined")await new Promise(r=>setTimeout(r,500));mkRequest("https://server2.allquakes.com/api/getPrevious.php?quakeId=22109309","get","",function(httpObj){let r=httpObj.responseText,d=document;if(""!=r&&200==httpObj.status){let o=JSON.parse(r);if(!o){d.getElementById("olderQuakesSection").remove();return};let table=d.getElementById("qTableOlder");table.innerHTML+=o.tableRows,qTableOlder.alternateBg(),d.getElementById("placeholder_largestQText").innerHTML=o.html,d.getElementById("sectionPreviousCWrap").style.display="",eval(o.js)}})})();]]>Support Us – Help Us Enhance Our Services!We’re passionate about delivering the latest volcano and earthquake data from around the globe — just for you. 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