Strong magnitude 5.2 earthquake at unknown depth17 Aug 00:34 UTC: First to report: GFZ after 10 minutes.17 Aug 00:34: Magnitude recalculated from 5.1 to 5.2.I didn't feel itI felt this quakeEarthquake detailsDate & timeAug 17, 2025 00:24:13 UTC - Local time at epicenterSunday, Aug 17, 2025, at 12:24 am (Universal Time GMT +0)Statusunconfirmed (uncertain whether an earthquake with these data happened)Magnitude5.2Depth10 kmEpicenter latitude / longitude4.31°N / 62.63°EInternational Territory (not near any country)Seismic antipode4.31°S / 117.37°WShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceGFZ (German Research Centre for Geosciences)Estimated seismic energy released4 x 1012 joules (1.11 gigawatt hours, equivalent to 951 tons of TNT) | equivalent to ONE quake of magnitude 5.2 | about seismic energy11 minutes agoAug 17, 2025 00:24 GMT / Aug 17, 2025 12:24 am (Universal Time)Lat / Lng: 4.31 / 62.63: Carlsberg RidgeSource: GFZDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22064440',4.31000,62.63000,'11 minutes ago: Mag. 5.2, Carlsberg Ridge',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 hrsNearby placesUser-reports for this quakeThere are no user reports for this quake yet.If you felt it, be the first to report it!Compare 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 GMT2025-08-17EpicenterAgency5.210 km6.2 mi(*)00:24:13.76Carlsberg RidgeGFZ (German Research Centre for Geosciences)Notes:(*) A depth given as 10 km often means that the the depth of the quake could be not determined with sufficient accuracy.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 16 km2 (6 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 7 km (4 mi).[More info]Recorded aftershocks, latest first (0 quake)Aug 17, 2025 12:24 am (Universal Time)11 minutes ago5.210 km0 km - This quakeCarlsberg RidgeMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 55 years and our earthquake archive back to 1900, there are about 6.2 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 5 or higher: 0.74 quakes per year (or 1 quake every 1.4 years)Mag. 4 or higher: 4.3 quakes per yearMag. 3 or higher: 5.5 quakes per yearMag. 2 or higher: 5.5 quakes per yearThe area where this quake occurred has a high level of seismic activity. It has had at least 41 quakes above magnitude 5 since 1970, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 1 to 5 years.Number of quakes per yearPrevious quakes in the same area of this earthquake