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The quake had a very shallow depth of 30 km (19 mi) and was not felt (or at least not reported so).Quake Data | Interactive map | Seismograms | User reports | Aftershocks | Earlier quakes here | Quakes in Tonga | Eua | Tongatapu | Ha'apaiHint: Click on the image to see different maps of this quake!Strong magnitude 5.1 earthquake at 30 km depth29 Jul 21:02 UTC: First to report: EMSC after 10 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeJul 29, 2026 20:52:12 UTC - Local time at epicenterWednesday, Jul 29, 2026, at 08:52 pm (Universal Time GMT +0)Statusunconfirmed (uncertain whether an earthquake with these data happened)Magnitude5.10Depth30 kmEpicenter latitude / longitude24.6448°S / 174.9853°WTongaSeismic antipode24.6448°N / 5.0147°EShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoUnnamed 24.8°S/177.02°W (206 km / 128 mi)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 energy10 minutes agoJul 29, 2026 20:52 GMT / Jul 29, 2026 08:52 pm (Universal Time)Lat / Lng: -24.6448 / -174.9853: South OF TongaSource: EMSCDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23227557',-24.64480,-174.98530,'10 minutes ago: Mag. 5.1, South OF Tonga',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+="¬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 TongaNearby placesThe closest larger town where the quake might have been felt is Ha'atu'a, a town with 489 inhabitants in Tonga, in 363 km (226 mi) distance north of the epicenter. People likely experienced very weak shaking there. In the capital of Tonga, Nuku'alofa, 391 km (243 mi) away from the epicenter, the earthquake was probably felt as very weak shaking.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry363 km (226 mi)N of epicenterHa'atu'a(pop: 489)II: Very weak'Eua fo'ou, EuaTonga385 km (239 mi)N of epicenterMu'a(pop: 3,900)II: Very weakTongatapuTonga391 km (243 mi)N of epicenterNuku'alofa(pop: 22,400)II: Very weakKolofo'ou, TongatapuTonga392 km (244 mi)N of epicenterNukunuku(pop: 2,100)II: Very weakTongatapuTonga541 km (336 mi)N of epicenterPangai(pop: 1,740)II: Very weakHa'apaiTongaNotes:(*) 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 GMT2026-07-29EpicenterAgency5.130 km19 mi20:52:12.38SOUTH OF TONGAEMSC (European-Mediterranean Seismological Centre)"; HTMLcontent += ""; mainMap.addToMap("station"+id, lat, lon, title,HTMLcontent); mainMap.map.panTo([lat,lon]); document.getElementById("map_canvas").scrollIntoView();}]]>SeismogramsSeismic station: Raoul, Kermadec Islands (RAO/IU network) | Distance from quake: 589 km / 366 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 ServiceShow 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)Jul 29, 2026 08:52 pm (Universal Time)10 minutes ago5.130 km0 km - This quakeSouth OF TongaMain Shock (this quake)MoreMap of aftershocksPrevious quakes in the same area of this earthquake10 minutes agoJul 29, 2026 20:52 GMT / Jul 29, 2026 08:52 pm (Universal Time)Lat / Lng: -24.6448 / -174.9853: South OF TongaSource: EMSCDetail info | You felt it? - Report it!',5.1,51, '#bb202a', 0.9,1.5, '#bb202a', 0.27);map2.addToMap('thisQuake',-24.6448,-174.9853,'10 minutes ago: Mag. 5.1, South OF Tonga','Earthquake: Mag 5.1 / 30 km (19 mi) depth10 minutes agoJul 29, 2026 20:52 GMT / Jul 29, 2026 08:52 pm (Universal Time)Lat / Lng: -24.6448 / -174.9853: South OF TongaSource: EMSCDetail 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=23227557","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.