Moderate magnitude 4.8 earthquake at 576 km depth18 Aug 01:22 UTC: First to report: EMSC after 13 minutes.18 Aug 01:23: Magnitude recalculated from 5.2 to 4.8. Epicenter location corrected by 11 km (6.8 mi) towards N.... [show all] ...18 Aug 01:23: Epicenter location corrected by 5.1 km (3.1 mi) towards SE.18 Aug 01:27: Epicenter location corrected by 20 km (12 mi) towards SW.18 Aug 01:27: Now using data updates from USGSI didn't feel itI felt this quakeEarthquake detailsDate & timeAug 18, 2026 01:10:03 UTC - Local time at epicenterTuesday, Aug 18, 2026, at 02:10 pm (GMT +13)Statusconfirmed (manually revised)Magnitude4.80Depth576 kmEpicenter latitude / longitude22.0411°S / 179.0793°WFijiSeismic antipode22.0411°N / 0.9207°EAlgeriaQuality50 seismic stationsShaking intensityNot feltPrimary data sourceUSGS (United States Geological Survey)Weather at epicenter at time of quakeFew Clouds 19.8°C (68 F), humidity: 59%, wind: 8 m/s (16 kts) from SEstimated seismic energy released1 x 1012 joules (278 megawatt hours, equivalent to 239 tons of TNT) | equivalent to ONE quake of magnitude 4.8 | about seismic energy29 minutes agoAug 18, 2026 01:10 GMT / Aug 18, 2026 02:10 pm (GMT +13)Lat / Lng: -22.0411 / -179.0793: South of the Fiji IslandsSource: USGSOther sources: GFZ: 4.8 / 569 km, RaspberryShake: 4.8 / 569 km, 1 more...Detail info | You felt it? - Report it!';storedMarkers.push(['quake-23286420',-22.04110,-179.07930,'29 minutes ago: Mag. 4.8, South of the Fiji Islands',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 FijiNearby placesThe closest larger town near the epicenter is Nukunuku, a town with 2,100 inhabitants in Tonga, in 404 km (251 mi) distance to the east, but it is unlikely that the quake was felt there. DistancePlaceMax. shaking intensity(*)RegionCountry404 km (251 mi)E of epicenterNukunuku(pop: 2,100)I: Not feltTongatapuTonga414 km (257 mi)E of epicenterNuku'alofa(pop: 22,400)I: Not feltKolofo'ou, TongatapuTonga416 km (259 mi)E of epicenterFua'amotu(pop: 1,680)I: Not feltTongatapuTonga427 km (265 mi)E of epicenterKolonga(pop: 1,210)I: Not feltTongatapuTonga433 km (269 mi)E of epicenter'Ohonua(pop: 1,470)I: Not felt'Eua Prope, EuaTonga556 km (345 mi)NE of epicenterFangale'ounga(pop: 2,020)I: Not feltHa'apaiTonga651 km (405 mi)NE of epicenterNeiafu(pop: 3,830)I: Not feltVava'uTongaNotes:(*) 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 GMT2026-08-18EpicenterAgency4.8576 km358 mi±8.6 km01:10:03.872south of the Fiji IslandsEpicenter uncertainty: ± 13 kmUSGS (United States Geological Survey)4.79569 km353 mi±6.4 km01:10:03.22±0.49sFiji Islands Region19 km (12 mi) epicenter difference with USGSEpicenter uncertainty: ± 5 kmGFZ (German Research Centre for Geosciences)4.8569 km354 mi01:10:03Fiji Islands Region19 km (12 mi) epicenter difference with USGSRaspberryShake (RaspberryShake)4.8576 km358 mi01:10:03.872±1.89sSOUTH OF FIJI ISLANDS0 km (0 mi) epicenter difference with USGSEpicenter uncertainty: ± 22 kmEMSC (European-Mediterranean Seismological Centre)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 6 km2 (2 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 4 km (3 mi).[More info]Recorded aftershocks, latest first (0 quake)Aug 18, 2026 02:10 pm (GMT +13)29 minutes ago4.8576 km0 km - This quakeSouth of the Fiji IslandsMain 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 65 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.07 quakes per year (or 1 quake every 14.1 years)Mag. 6 or higher: 0.36 quakes per year (or 1 quake every 2.8 years)Mag. 5 or higher: 5.8 quakes per yearMag. 4 or higher: 65 quakes per year (or 5.5 quakes per month)Mag. 3 or higher: 85 quakes per year (or 7.1 quakes per month)Mag. 2 or higher: 85 quakes per year (or 7.1 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 9 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 10 to 15 years.Number of quakes per yearPrevious quakes in the same area of this earthquake