Strong magnitude 5.2 earthquake at 25 km depth28 May 00:29 UTC: First to report: USGS after 4 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeMay 28, 2026 00:25:22 UTC - Local time at epicenterThursday, May 28, 2026, at 12:25 am (Universal Time GMT +0)Statusunconfirmed (uncertain whether an earthquake with these data happened)Magnitude5.20Depth25 kmEpicenter latitude / longitude51.614°N / 176°WAleutians West, Alaska, United StatesSeismic antipode51.614°S / 4°EShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceUSGS (United States Geological Survey)Nearest volcanoGreat Sitkin (52 km / 32 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 energy4 minutes agoMay 28, 2026 00:25 GMT / May 28, 2026 12:25 am (Universal Time)Lat / Lng: 51.614 / -176: 52 km ESE of Adak, AlaskaSource: USGSDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23041733',51.61400,-176.00000,'4 minutes ago: Mag. 5.2, 52 km ESE of Adak, 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 Adak, a town with 332 inhabitants in the United States, in 52 km (33 mi) distance northwest of the epicenter. People likely experienced light shaking there.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry52 km (33 mi)NW of epicenterAdak(pop: 332)IV: LightAleutians West Census Area, AlaskaUnited States139 km (87 mi)NE of epicenterAtka(pop: 64)III: WeakAleutians West Census Area, AlaskaUnited States507 km (315 mi)E of epicenterNikolski(pop: 18)II: Very weakAleutians West Census Area, AlaskaUnited States696 km (432 mi)NE of epicenterSaint George(pop: 102)I: Not feltAleutians West Census Area, 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 GMT2026-05-28EpicenterAgency5.225 km16 mi00:25:2252 km ESE of Adak, 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)May 28, 2026 12:25 am (Universal Time)4 minutes ago5.225 km0 km - This quake52 km ESE of Adak, 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 1,600 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 8 or higher: 0.02 quakes per year (or 1 quake every 62.5 years)Mag. 7 or higher: 0.06 quakes per year (or 1 quake every 17.9 years)Mag. 6 or higher: 0.48 quakes per year (or 1 quake every 2.1 years)Mag. 5 or higher: 5.1 quakes per yearMag. 4 or higher: 26.8 quakes per yearMag. 3 or higher: 154 quakes per year (or 12.8 quakes per month)Mag. 2 or higher: 520 quakes per year (or 43 quakes per month)Mag. 1 or higher: 1,100 quakes per year (or 3.1 quakes per day)The area where this quake occurred has a very high level of seismic activity. It has had at least 2 quakes above magnitude 8 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 60 to 65 years.Number of quakes per yearPrevious quakes in the same area of this earthquake