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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 | Quakes in Solomon Islands | Quakes in Vanuatu | Temotu Province | Torba Province | Sanma ProvinceHint: Click on the image to see different maps of this quake!Strong magnitude 5.1 earthquake at unknown depth20 Sep 23:07 UTC: First to report: BMKG after 16 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeSep 20, 2026 22:51:22 UTC - Local time at epicenterMonday, Sep 21, 2026, at 09:51 am (GMT +11)Statusunconfirmed (uncertain whether an earthquake with these data happened)Magnitude5.1Depth10 kmEpicenter latitude / longitude12.46°S / 166.21°EVanuatuAlso near: Solomon Islands 108 km (67 mi) awaySeismic antipode12.46°N / 13.79°W Guinea-BissauShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Nearest volcanoUreparapara (169 km / 105 mi)Weather at epicenter at time of quakeLight Rain 24.7°C (76 F), humidity: 64%, wind: 9 m/s (18 kts) from SEEstimated 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 energy17 minutes agoSep 20, 2026 22:51 GMT / Sep 21, 2026 09:51 am (GMT +11)Lat / Lng: -12.46 / 166.21: Vanuatu: Santa Cruz IslandsSource: BMKGDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23378757',-12.46000,166.21000,'17 minutes ago: Mag. 5.1, Vanuatu: Santa Cruz Islands',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 VanuatuNearby placesThe closest larger town where the quake might have been felt is Lata, a town with 553 inhabitants in the Solomon Islands, in 198 km (123 mi) distance north of the epicenter. People likely experienced weak shaking there. In the capital of Vanuatu, Port Vila, 629 km (391 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(*)RegionCountry198 km (123 mi)N of epicenterLata(pop: 553)III: WeakLuva Station, Temotu ProvinceSolomon Islands214 km (133 mi)SE of epicenterSola(pop: 1,170)III: WeakTorba ProvinceVanuatu302 km (188 mi)S of epicenterPort-Olry(pop: 1,300)II: Very weakSanma ProvinceVanuatu312 km (194 mi)S of epicenterHog Harbour(pop: 1000)II: Very weakSanma ProvinceVanuatu356 km (221 mi)S of epicenterLuganville(pop: 13,400)II: Very weakSanma ProvinceVanuatu421 km (262 mi)S of epicenterNorsup(pop: 3,000)II: Very weakMalampa ProvinceVanuatu518 km (322 mi)NW of epicenterKirakira(pop: 2,110)II: Very weakBauro Central, Makira-Ulawa ProvinceSolomon Islands629 km (391 mi)S of epicenterPort Vila(pop: 35,900)I: Not feltShefa ProvinceVanuatu729 km (453 mi)NW of epicenterAuki(pop: 7,020)I: Not feltMalaita ProvinceSolomon IslandsNotes:(*) 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 GMT2026-09-20EpicenterAgency5.110 km6.2 mi(*)22:51:22Santa Cruz IslandsBMKG (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: Honiara, Solomon Islands (HNR/IU network) | Distance from quake: 762 km / 473 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: Monasavu, Fiji (MSVF/II network) | Distance from quake: 1400 km / 870 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)Sep 21, 2026 09:51 am (GMT +11)17 minutes ago5.110 km0 km - This quakeCoral Sea, 83 km NW of Hiw Island, Torba Province, VanuatuMain 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 47 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.14 quakes per year (or 1 quake every 7.1 years)Mag. 6 or higher: 0.68 quakes per year (or 1 quake every 1.5 years)Mag. 5 or higher: 9.5 quakes per yearMag. 4 or higher: 50 quakes per year (or 4.2 quakes per month)Mag. 3 or higher: 79 quakes per year (or 6.6 quakes per month)Mag. 2 or higher: 87 quakes per year (or 7.3 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 18 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 5 to 10 years.Number of quakes per yearPrevious quakes in the same area of this earthquake