Strong mag. 5.1 earthquake - Philippine Sea, 39 km northeast of Colonia, State of Yap, Micronesia, on Monday, Aug 17, 2026, at 06:51 pm (Universal Time)

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The depth of the quake could not be determined, but is assumed to be shallow.The quake was not felt (or at least not reported so).Quake Data | Interactive map | Seismograms | User reports | Aftershocks | Earlier quakes here | State of Yap | State of Kayangel | State of NgaraardHint: Click on the image to see different maps of this quake!Strong magnitude 5.1 earthquake at unknown depth17 Aug 18:59 UTC: First to report: BMKG after 8 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeAug 17, 2026 18:51:13 UTC - Local time at epicenterMonday, Aug 17, 2026, at 06:51 pm (Universal Time GMT +0)Statusunconfirmed (uncertain whether an earthquake with these data happened)Magnitude5.1Depth10 kmEpicenter latitude / longitude9.74°N / 138.39°EMicronesiaSeismic antipode9.74°S / 41.61°WBrazilShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Estimated seismic energy released2.8 x 1012 joules (783 megawatt hours, equivalent to 674 tons of TNT) | equivalent to ONE quake of magnitude 5.1 | about seismic energy8 minutes agoAug 17, 2026 18:51 GMT / Aug 17, 2026 06:51 pm (Universal Time)Lat / Lng: 9.74 / 138.39: Western Caroline Islands, MicronesiaSource: BMKGDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23285350',9.74000,138.39000,'8 minutes ago: Mag. 5.1, Western Caroline Islands, Micronesia',html,'quakes-7-24.png',30,30,15,15,126]); function mkRep(id,notFelt){var nFelt=notFelt||false;var src="https://www.volcanoesandearthquakes.com/app/earthquake-report.php?quakeId="+id;if(nFelt==true){src+="&notFelt=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 hrsNearby placesThe closest larger town where the quake might have been felt is Colonia, a town with 7,400 inhabitants in Micronesia, in 39 km (24 mi) distance southwest of the epicenter. People likely experienced light shaking there.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry39 km (24 mi)SW of epicenterColonia(pop: 7,370)IV: LightWeloy Municipality, State of Yap Micronesia234 km (145 mi)E of epicenterFais(pop: 215)III: WeakState of Yap Micronesia444 km (276 mi)SW of epicenterKayangel(pop: 188)II: Very weakState of Kayangel Palau475 km (295 mi)SW of epicenterUlimang(pop: 581)II: Very weakState of Ngaraard Palau486 km (302 mi)SW of epicenterNgchesar Hamlet(pop: 300)II: Very weakState of Ngchesar Palau491 km (305 mi)SW of epicenterImeong Hamlet(pop: 132)II: Very weakState of Ngeremlengui Palau500 km (311 mi)SW of epicenterNgchemiangel(pop: 270)II: Very weakState of Aimeliik Palau506 km (314 mi)SW of epicenterKoror Town(pop: 12,700)II: Very weakState of Koror Palau507 km (315 mi)SW of epicenterKoror(pop: 14,000)II: Very weakState of Koror Palau545 km (339 mi)SW of epicenterKloulklubed(pop: 702)II: Very weakState of Peleliu Palau565 km (351 mi)SW of epicenterSaipan(pop: 320)II: Very weakState of Angaur PalauNotes:(*) 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 GMT2026-08-17EpicenterAgency5.110 km6.2 mi(*)18:51:13Western Caroline Islands, MicronesiaBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Notes:(*) A depth given as 10 km often means that the the depth of the quake could be not determined with sufficient accuracy."; HTMLcontent += ""; mainMap.addToMap("station"+id, lat, lon, title,HTMLcontent); mainMap.map.panTo([lat,lon]); document.getElementById("map_canvas").scrollIntoView();}document.addEventListener("DOMContentLoaded", function () { var section = document.getElementById("seismogramSection"); if (!section) return; var images = section.querySelectorAll("img.waitBg"); if (!images.length) return; images.forEach(function(img, index){ img.addEventListener("error", function(){ // If the first image fails, hide the whole section. if (index === 0) { // Remove TOC entry var tocLink = document.querySelector('#toc .tocLink[data-href="seismogramSection"]'); if (tocLink) {tocLink.remove()} // Remove whole section section.remove(); } // Otherwise remove only this station. var plot = img.closest(".plotContainer"); if (!plot) return; var station = plot.previousElementSibling; var caption = plot.nextElementSibling; if (station) station.remove(); plot.remove(); if (caption) caption.remove(); // Remove empty "Show more" var more = document.getElementById("moreSeismograms"); if (more && !more.querySelector(".plotContainer")) { more.remove(); var btn = document.getElementById("moreSeismograms_1"); if (btn) btn.remove(); } // Hide section if nothing remains. if (!section.querySelector(".plotContainer")) { section.style.display = "none"; } }, { once: true }); });});]]>SeismogramsSeismic station: Guam, Mariana Islands (GUMO/IU network) | Distance from quake: 825 km / 513 mi | Show on map | Station InfoSeismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.02-4.0 Hz. Source: NSF SAGE Facility IRISWS timeseriesplot Web ServiceSeismic station: Davao, Philippines (DAV/IU network) | Distance from quake: 1440 km / 895 mi | Show on map | Station InfoShow moreAftershocks 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 13 km2 (5 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 6 km (4 mi).[More info]Recorded aftershocks, latest first (0 quake)Aug 17, 2026 06:51 pm (Universal Time)8 minutes ago5.110 km0 km - This quakeWestern Caroline Islands, MicronesiaMain Shock (this quake)MoreMap of aftershocksPrevious quakes in the same area of this earthquake8 minutes agoAug 17, 2026 18:51 GMT / Aug 17, 2026 06:51 pm (Universal Time)Lat / Lng: 9.74 / 138.39: Western Caroline Islands, MicronesiaSource: BMKGDetail info | You felt it? - Report it!',5.1,51, '#bb202a', 0.9,1.5, '#bb202a', 0.27);map2.addToMap('thisQuake',9.74,138.39,'8 minutes ago: Mag. 5.1, Western Caroline Islands, Micronesia','Earthquake: Mag 5.1 / 10 km (6.2 mi) depth8 minutes agoAug 17, 2026 18:51 GMT / Aug 17, 2026 06:51 pm (Universal Time)Lat / Lng: 9.74 / 138.39: Western Caroline Islands, MicronesiaSource: 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)})(); })(); (function(){let done=false;async function loadPrevious(){if(done)return;done=true;while(typeof mkRequest=="undefined")await new Promise(r=>setTimeout(r,500));mkRequest("https://server2.allquakes.com/api/getPrevious.php?quakeId=23285350","get","",function(httpObj){let r=httpObj.responseText,d=document;if(""!=r&&200==httpObj.status){let o=JSON.parse(r);if(!o){let s=d.getElementById("olderQuakesSection");if(s)s.remove();return};let table=d.getElementById("qTableOlder");if(!table)return;table.innerHTML+=o.tableRows,qTableOlder.alternateBg();let ph=d.getElementById("placeholder_largestQText");if(ph)ph.innerHTML=o.html;let wrap=d.getElementById("sectionPreviousCWrap");if(wrap)wrap.style.display="";eval(o.js)}})}let d=document,target=d.getElementById("sectionPreviousCWrap")||d.getElementById("placeholder_largestQText")||d.getElementById("qTableOlder");if(!target||!("IntersectionObserver" in window)){loadPrevious();return}let obs=new IntersectionObserver(function(entries){if(entries.some(e=>e.isIntersecting)){obs.disconnect();loadPrevious()}},{rootMargin:"300px 0px"});obs.observe(target)})();]]>Sources: VolcanoDiscovery / VolcanoAdventures and other sources as noted.Use of material: Most text and images on our websites are owned by us. Re-use is generally not permitted without authorization. Contact us for licensing rights.