Light magnitude 3.9 earthquake at 13 km depth9 Aug 01:58 UTC: First to report: EMSC after 1 minute.9 Aug 01:58: Now using data updates from USGS9 Aug 02:02: Magnitude recalculated from 4.4 to 3.9. Hypocenter depth recalculated from 9.70 to 11.30 km (from 6 to 7 mi).9 Aug 02:05: Hypocenter depth recalculated from 11.30 to 12.70 km (from 7 to 7.9 mi). Epicenter location corrected by 3.2 km (2 mi) towards NNW.Update Sun, 9 Aug 2026, 02:00Moderate earthquake of magnitude 4.4 just reported 58 miles southeast of Chignik Lagoon, Alaska, United StatesThe United States Geological Survey reported a magnitude 4.4 quake in the United States near Chignik Lagoon, Lake and Peninsula, Alaska, only 3 minutes ago. The earthquake hit in the afternoon on Saturday, August 8th, 2026, at 5:57 pm local time at a very shallow depth of 6 miles. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.4 earthquake as well.Weak shaking might have been felt in Chignik Lagoon (pop. 78) located 58 miles from the epicenter.Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Chignik Lake (pop. 73) located 65 miles from the epicenter.VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.If you were or still are in this area during the quake help others with your feedback and report it here.Download the Volcanoes & Earthquakes app and get one of the fastest seismic alerts online: Android | iOSI didn't feel itI felt this quakeEarthquake detailsDate & timeAug 9, 2026 01:57:04 UTC - Local time at epicenterSaturday, Aug 8, 2026, at 05:57 pm (GMT -8)Statusconfirmed (manually revised)Magnitude3.90Depth12.7 kmEpicenter latitude / longitude56.018°N / 157.142°WKodiak Island Borough, Alaska, United StatesSeismic antipode56.018°S / 22.858°EQuality177 seismic stationsShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceUSGS (United States Geological Survey)Nearest volcanoYantarni (111 km / 69 mi)Weather at epicenter at time of quakeScattered Clouds 13.4°C (56 F), humidity: 87%, wind: 4 m/s (9 kts) from WSWEstimated seismic energy released4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) | equivalent to ONE quake of magnitude 3.9 | about seismic energy39 minutes agoAug 9, 2026 01:57 GMT / Aug 8, 2026 05:57 pm (GMT -8)Lat / Lng: 56.018 / -157.142: 84 km ESE of Chignik, AlaskaSource: USGSOther sources: EMSC: 3.9 / 13 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23256156',56.01800,-157.14200,'39 minutes ago: Mag. 3.9, 84 km ESE of Chignik, Alaska',html,'quakes-5-24.png',18,18,9,9,124]); 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]Ground shaking from this quakeMap of estimated ground shaking (source:USGS)Ground accelleration map for this quakeMap of estimated ground accelleration (source:USGS)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 Chignik Lagoon, a town with 78 inhabitants in the United States, in 92 km (57 mi) distance west of the epicenter. People likely experienced very weak shaking there.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry92 km (57 mi)W of epicenterChignik Lagoon(pop: 78)II: Very weakLake and Peninsula Borough, AlaskaUnited States104 km (65 mi)W of epicenterChignik Lake(pop: 73)II: Very weakLake and Peninsula Borough, AlaskaUnited States125 km (78 mi)W of epicenterPerryville(pop: 113)II: Very weakLake and Peninsula Borough, AlaskaUnited States138 km (86 mi)NW of epicenterPort Heiden(pop: 98)II: Very weakLake and Peninsula Borough, AlaskaUnited States167 km (104 mi)N of epicenterUgashik(pop: 12)I: Not feltLake and Peninsula Borough, AlaskaUnited States174 km (108 mi)N of epicenterPilot Point(pop: 65)I: Not feltLake and Peninsula Borough, AlaskaUnited States210 km (130 mi)NE of epicenterAkhiok(pop: 72)I: Not feltKodiak Island Borough, AlaskaUnited States224 km (139 mi)W of epicenterSand Point(pop: 1,060)I: Not feltAleutians East Borough, AlaskaUnited States238 km (148 mi)NE of epicenterKarluk(pop: 37)I: Not feltKodiak Island Borough, AlaskaUnited States245 km (152 mi)N of epicenterEgegik(pop: 106)I: Not feltLake and Peninsula Borough, AlaskaUnited States253 km (157 mi)W of epicenterNelson Lagoon(pop: 52)I: Not feltAleutians East Borough, AlaskaUnited States256 km (159 mi)NE of epicenterLarsen Bay(pop: 88)I: Not feltKodiak Island Borough, AlaskaUnited States269 km (167 mi)NE of epicenterOld Harbor(pop: 221)I: Not feltKodiak Island Borough, AlaskaUnited States329 km (204 mi)NE of epicenterWomens Bay(pop: 719)I: Not feltKodiak Island Borough, AlaskaUnited States330 km (205 mi)NE of epicenterPort Lions(pop: 197)I: Not feltKodiak Island Borough, AlaskaUnited States342 km (213 mi)NE of epicenterAleneva(pop: 37)I: Not feltKodiak Island 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 GMT2026-08-9EpicenterAgency3.913 km7.9 mi±2.2 km01:57:04.57584 km ESE of Chignik, AlaskaEpicenter uncertainty: ± 2.5 kmUSGS (United States Geological Survey)3.913 km7.9 mi01:57:04.575±0.28sALASKA PENINSULA0 km (0 mi) epicenter difference with USGSEpicenter uncertainty: ± 2.5 kmEMSC (European-Mediterranean Seismological Centre)Earthquake statisticsAverage number of earthquakesBased on data from the past 56 years and our earthquake archive back to 1900, there are about 325 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: 0.15 quakes per year (or 1 quake every 6.5 years)Mag. 5 or higher: 0.79 quakes per year (or 1 quake every 1.3 years)Mag. 4 or higher: 9.4 quakes per yearMag. 3 or higher: 51 quakes per year (or 4.3 quakes per month)Mag. 2 or higher: 265 quakes per year (or 22.1 quakes per month)Mag. 1 or higher: 323 quakes per year (or 26.9 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