")}e.setAttribute("data-distAdded",1)}}async filterEQ(e){if(document,this.magFilter=e,this.currMag){var s=Math.max(e,this.currMag.getAttribute("data-baseVal"));if(this.currMag.innerText=s.toString(),this.magFilterBtns){let a=this.magFilterBtns.getElementsByClassName("magFilter");for(i=0;isetTimeout(e,1e3))),e!=this.distFilter){if(this.distFilter=e,this.currDistInfoKm&&(this.currDistInfoKm.innerText=e),this.currDistInfoMi&&(this.currDistInfoMi.innerText=Math.round(.62137*e)),e>this.currentMaxDist)return this.loadNewQuakes(500);this.applyFilters()}}async filterByAge(e){if(this.ageFilter=e,this.ageFilterBtns){let s=this.ageFilterBtns.getElementsByClassName("ageFilter");for(var a=0;a0&&(e.getAttribute("data-mag")&&parseFloat(e.getAttribute("data-mag"))3&&e.getAttribute("data-mag")&&parseInt(e.getAttribute("data-ea"))>0))return!1;if(this.ageFilter>0){if(this.referenceTime){if(e.getAttribute("data-time")&&this.referenceTime-parseInt(e.getAttribute("data-time"))>this.ageFilter)return!1}else if(e.getAttribute("data-time")&&s-parseInt(e.getAttribute("data-time"))>this.ageFilter)return!1}if(this.statusFilter&&e.getAttribute("data-ea")&&parseInt(e.getAttribute("data-ea"))>0)return!1;if(this.distFilter>0){if(e.getAttribute("data-dist")&&parseFloat(e.getAttribute("data-dist"))>this.distFilter)return!1;if(500==this.distFilter&&e.getAttribute("data-dist")&&e.getAttribute("data-mag")){let a=parseFloat(e.getAttribute("data-mag")),l=parseFloat(e.getAttribute("data-dist"));if(a25||a50||a100||a200||a250||a300||l>500)return!1}}return!("time"!=this.sortBy&&e.classList.contains("tSpc"))}async applyFilters(e){var e=e||0;e||!this.loadMoreUrl||this.hasLoadedAll||(this.loadMoreRows(),await new Promise(e=>setTimeout(e,500)));let s=document,a=this.table.rows,l=0,r=Math.floor(Date.now()/1e3);for(let n=1;nsetTimeout(e,20)))}}let h=a.getElementsByClassName("aStr");nowUTC=Math.floor(Date.now()/1e3);for(let u=0;usetTimeout(e,1e3))),await new Promise(e=>setTimeout(e,200));let s=this.table,a=Array.from(s.querySelectorAll(":scope > tbody > tr"));a.shift();let l="desc",r=e==this.sortBy;for(let n of(r&&"desc"==this.sortDir&&(l="asc"),this.sortBy=e,this.sortDir=l,a.sort((s,a)=>{if("time"==e){let r=parseInt(s.getAttribute("data-time")),n=parseInt(a.getAttribute("data-time"));return"asc"==l?r-n:n-r}if("dep"==e){let o=parseInt(s.getAttribute("data-dep")),d=parseInt(a.getAttribute("data-dep"));return"asc"==l?o-d:d-o}let h=parseFloat(s.getAttribute("data-mag"));isNaN(h)&&(h=0);let u=parseFloat(a.getAttribute("data-mag"));return isNaN(u)&&(u=0),"asc"==l?h-u:u-h}),a))("tSpc"==n.className||1==n.getAttribute("data-ea"))&&("time"==e?n.style.display="":n.style.display="none"),s.tBodies[0].appendChild(n);this.table.rows[0].style.opacity=1,this.isSorting=0,this.applyFilters()}async changeCircleSize(e){let s=this.map;s.circleScale*=e;for(let a=0;atimeAtCurRow?posFound=1:(elToInsertAfter=rows[curRowInd],curRowInd++)}else posFound=1;markThem&&(newTableRow.classList.add("newQuake"),setTimeout(function(){removeMarking(newTableRow)},8e3)),elToInsertAfter.parentNode.insertBefore(newTableRow,elToInsertAfter.nextSibling),elToInsertAfter=rows[curRowInd],curRowInd++,newRows++,"undefined"!=typeof addQuakeToMap?eval(quake.js):setTimeout(function(){eval(quake.js)},100)}return newRows+updated>0&&(this.alternateBg(),"time"==this.sortBy&&"asc"==this.sortDir&&this.sortTable("time")),[newRows,updated]}assignMap(e){this.map=e}}]]>Updated: Aug 27, 2026 04:36 GMT - I felt this quakeA strong magnitude 5.1 earthquake occurred in the South Atlantic Ocean near the coast of n/a on Thu, Aug 27, 2026 at 04:19 GMT. 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 hereHint: Click on the image to see different maps of this quake!Strong magnitude 5.1 earthquake at unknown depth27 Aug 04:31 UTC: First to report: GFZ after 13 minutes.27 Aug 04:32: Now using data updates from EMSC27 Aug 04:34: Magnitude recalculated from 5.2 to 5.1. Epicenter location corrected by 4.3 km (2.7 mi) towards ENE.27 Aug 04:34: Now using data updates from USGSI didn't feel itI felt this quakeEarthquake detailsDate & timeAug 27, 2026 04:19:08 UTC - Local time at epicenterThursday, Aug 27, 2026, at 04:19 am (Universal Time GMT +0)Statusconfirmed (manually revised)Magnitude5.09Depth10 kmEpicenter latitude / longitude22.5672°S / 20.2977°WInternational Territory (not near any country)Seismic antipode22.5672°N / 159.7023°EQuality67 seismic stationsShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceUSGS (United States Geological Survey)Weather at epicenter at time of quakeOvercast Clouds 20.7°C (69 F), humidity: 78%, wind: 2 m/s (4 kts) from SSWEstimated 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 energy18 minutes agoAug 27, 2026 04:19 GMT / Aug 27, 2026 04:19 am (Universal Time)Lat / Lng: -22.5672 / -20.2977: South Atlantic OceanSource: USGSOther sources: GFZ: 5.2 / 10 km, RaspberryShake: 5.2 / 10 km, 1 more...Detail info | You felt it? - Report it!';storedMarkers.push(['quake-23315706',-22.56720,-20.29770,'18 minutes ago: Mag. 5.1, South Atlantic Ocean',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 hrsUser-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 GMT2026-08-27EpicenterAgency5.0910 km6.2 mi(*)04:19:08.168South Atlantic OceanUSGS (United States Geological Survey)5.210 km6.2 mi(*)04:19:09.46South Atlantic Ocean8.3 km (5.2 mi) epicenter difference with USGSGFZ (German Research Centre for Geosciences)5.210 km6.2 mi(*)04:19:09South Atlantic Ocean8.3 km (5.2 mi) epicenter difference with USGSRaspberryShake (RaspberryShake)5.110 km6.2 mi(*)04:19:08.168SOUTH ATLANTIC OCEAN0 km (0 mi) epicenter difference with USGSEMSC (European-Mediterranean Seismological Centre)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: Horse Pasture, St. Helena Island (SHEL/II network) | Distance from quake: 1694 km / 1052 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: 0.02-2.0 Hz. Source: NSF SAGE Facility IRISWS timeseriesplot Web ServiceSeismic station: Butt Crater, Ascension Island (ASCN/II network) | Distance from quake: 1747 km / 1085 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 27, 2026 04:19 am (Universal Time)18 minutes ago5.110 km0 km - This quakeSouth Atlantic OceanMain Shock (this quake)MoreMap of aftershocksPrevious quakes in the same area of this earthquake