Strong magnitude 5.2 earthquake at 56 km depth11 Apr 01:01 UTC: First to report: USGS after 21 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeApr 11, 2026 00:39:53 UTC - Local time at epicenterSaturday, Apr 11, 2026, at 12:39 am (Universal Time GMT +0)Statusunconfirmed (uncertain whether an earthquake with these data happened)Magnitude5.2Depth56 kmEpicenter latitude / longitude51.845°N / 171.527°WAlaska, United StatesSeismic antipode51.845°S / 8.473°EShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceUSGS (United States Geological Survey)Nearest volcanoAmukta (75 km / 47 mi)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 energy22 minutes agoApr 11, 2026 00:39 GMT / Apr 11, 2026 12:39 am (Universal Time)Lat / Lng: 51.845 / -171.527: 187 km ESE of Atka, AlaskaSource: USGSDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22897380',51.84500,-171.52700,'22 minutes ago: Mag. 5.2, 187 km ESE of Atka, Alaska',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 the US AlaskaNearby placesThe closest larger town where the quake might have been felt is Atka, a town with 64 inhabitants in the United States, in 187 km (116 mi) distance west of the epicenter. People likely experienced weak shaking there.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry187 km (116 mi)W of epicenterAtka(pop: 64)III: WeakAleutians West Census Area, AlaskaUnited States218 km (135 mi)NE of epicenterNikolski(pop: 18)III: WeakAleutians West Census Area, AlaskaUnited States351 km (218 mi)W of epicenterAdak(pop: 332)II: Very weakAleutians West Census Area, AlaskaUnited States404 km (251 mi)NE of epicenterUnalaska(pop: 4,490)II: Very weakAleutians West Census Area, AlaskaUnited States405 km (251 mi)NE of epicenterDutch Harbor(pop: 4,380)II: Very weakAleutians West Census Area, AlaskaUnited States461 km (287 mi)NE of epicenterAkutan(pop: 1,040)II: Very weakAleutians East Borough, AlaskaUnited States544 km (338 mi)N of epicenterSaint George(pop: 102)II: Very weakAleutians West Census Area, AlaskaUnited States592 km (368 mi)N of epicenterSaint Paul(pop: 479)II: Very weakAleutians West Census Area, AlaskaUnited States634 km (394 mi)NE of epicenterFalse Pass(pop: 40)II: Very weakAleutians East Borough, AlaskaUnited StatesNotes:(*) 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 GMT2026-04-11EpicenterAgency5.256 km34 mi00:39:53.452187 km ESE of Atka, AlaskaUSGS (United States Geological Survey)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)Apr 11, 2026 12:39 am (Universal Time)22 minutes ago5.256 km0 km - This quake187 km ESE of Atka, AlaskaMain 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 131 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: 2 quakes per yearMag. 4 or higher: 12.9 quakes per yearMag. 3 or higher: 79 quakes per year (or 6.6 quakes per month)Mag. 2 or higher: 129 quakes per year (or 10.7 quakes per month)Mag. 1 or higher: 130 quakes per year (or 10.8 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