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The quake had a moderate depth of 80 km (50 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 | Niuas | Vava'u | PalauliHint: Click on the image to see different maps of this quake!Moderate magnitude 4.6 earthquake at 80 km depth27 Jul 01:23 UTC: First to report: EMSC after 18 minutes.27 Jul 01:23: Now using data updates from USGSI didn't feel itI felt this quakeEarthquake detailsDate & timeJul 27, 2026 01:05:37 UTC - Local time at epicenterMonday, Jul 27, 2026, at 02:05 pm (GMT +13)Statusconfirmed (manually revised)Magnitude4.60Depth80 kmEpicenter latitude / longitude16.5628°S / 173.9167°WTongaSeismic antipode16.5628°N / 6.0833°ENigerQuality42 seismic stationsShaking intensityIII Weak shaking near epicenterFelt0 reportsPrimary data sourceUSGS (United States Geological Survey)Nearest volcanoTafahi (82 km / 51 mi)Weather at epicenter at time of quakeOvercast Clouds 23.7°C (75 F), humidity: 86%, wind: 7 m/s (14 kts) from SSEEstimated seismic energy released5 x 1011 joules (139 megawatt hours, equivalent to 120 tons of TNT) | equivalent to ONE quake of magnitude 4.6 | about seismic energy33 minutes agoJul 27, 2026 01:05 GMT / Jul 27, 2026 02:05 pm (GMT +13)Lat / Lng: -16.5628 / -173.9167: 68 km S of Hihifo, TongaSource: USGSOther sources: EMSC: 4.6 / 81 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23219063',-16.56280,-173.91670,'33 minutes ago: Mag. 4.6, 68 km S of Hihifo, Tonga',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 TongaNearby placesThe closest larger town where the quake might have been felt is Hihifo, a town with 301 inhabitants in Tonga, in 69 km (43 mi) distance north of the epicenter. People likely experienced weak shaking there. In the capital of Niue, Alofi, 506 km (314 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(*)RegionCountry69 km (43 mi)N of epicenterHihifo(pop: 301)III: WeakNiuasTonga232 km (144 mi)S of epicenterNeiafu(pop: 3,830)II: Very weakVava'uTonga343 km (213 mi)NE of epicenterTaga(pop: 680)II: Very weakPalauli Samoa349 km (217 mi)NE of epicenterSagone(pop: 776)II: Very weakSatupa'itea Samoa351 km (218 mi)NE of epicenterGataivai(pop: 1,140)II: Very weakPalauli Samoa357 km (222 mi)S of epicenterFangale'ounga(pop: 2,020)I: Not feltHa'apaiTonga365 km (227 mi)NE of epicenterMulifanua(pop: 4,510)I: Not feltAiga-i-le-Tai Samoa365 km (227 mi)NE of epicenterSi'umu(pop: 1,180)I: Not feltTuamasaga Samoa365 km (227 mi)N of epicenterAsau(pop: 6,640)I: Not feltVaisigano Samoa370 km (230 mi)NE of epicenterSapapali'i(pop: 877)I: Not feltFa'asaleleaga Samoa372 km (231 mi)NE of epicenterMatavai(pop: 1,310)I: Not feltGagaifomauga Samoa372 km (231 mi)NE of epicenterFasito`outa(pop: 2,100)I: Not feltA'ana Samoa381 km (237 mi)NE of epicenterApia(pop: 40,400)I: Not feltTuamasaga Samoa382 km (238 mi)NE of epicenterSamalaeulu(pop: 789)I: Not feltGaga'emauga Samoa382 km (238 mi)NE of epicenterSafotu(pop: 1,210)I: Not feltGagaifomauga Samoa386 km (240 mi)NE of epicenterSolosolo(pop: 1,490)I: Not feltAtua Samoa386 km (240 mi)NE of epicenterMaasina(pop: 160)I: Not felt Samoa386 km (240 mi)NE of epicenterLalomanu(pop: 704)I: Not feltAtua Samoa417 km (259 mi)NE of epicenterLeone(pop: 4,050)I: Not feltWestern District American Samoa428 km (266 mi)NE of epicenterPago Pago(pop: 11,500)I: Not feltEastern District American Samoa438 km (272 mi)NW of epicenterMata-Utu(pop: 1,200)I: Not feltUvea Wallis & Futuna441 km (274 mi)NE of epicenterAlao(pop: 508)I: Not feltEastern District American Samoa506 km (314 mi)SE of epicenterAlofi(pop: 624)I: Not felt Niue509 km (316 mi)SE of epicenterMutalau(pop: 133)I: Not felt Niue515 km (320 mi)NW of epicenterAlo(pop: 239)I: Not feltAlo Wallis & Futuna517 km (321 mi)SE of epicenterHakupu(pop: 221)I: Not felt NiueNotes:(*) 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 GMT2026-07-27EpicenterAgency4.680 km50 mi±7.2 km01:05:37.82568 km S of Hihifo, TongaEpicenter uncertainty: ± 9.8 kmUSGS (United States Geological Survey)4.681 km50 mi01:05:37.825±2.19sTONGA0 km (0 mi) epicenter difference with USGSEpicenter uncertainty: ± 17 kmEMSC (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: Vavau (Talau) (TNG2/YC network) | Distance from quake: 232 km / 144 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: 0.2-5.0 Hz. Source: NSF SAGE Facility IRISWS timeseriesplot Web ServiceSeismic station: Haapai (Hihifo) (TNG4/YC network) | Distance from quake: 366 km / 227 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 4 km2 (2 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)Jul 27, 2026 02:05 pm (GMT +13)33 minutes ago4.680 km0 km - This quake68 km S of Hihifo, TongaMain 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 48 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: 0.24 quakes per year (or 1 quake every 4.1 years)Mag. 5 or higher: 6.5 quakes per yearMag. 4 or higher: 50 quakes per year (or 4.2 quakes per month)Mag. 3 or higher: 84 quakes per year (or 7 quakes per month)Mag. 2 or higher: 84 quakes per year (or 7 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