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The quake had a moderate depth of 132 km (82 mi) and was felt by many near the epicenter.Quake Data | Interactive map | Seismograms | User reports | Aftershocks | Earlier quakes here | Yigo Municipality | Dededo | RotaHint: Click on the image to see different maps of this quake!Strong magnitude 5.4 earthquake at 132 km depth10 Oct 04:00 UTC: First to report: VolcanoDiscovery after 2 minutes.10 Oct 04:06: Now using data updates from BMKG10 Oct 04:06: Now using data updates from EMSC10 Oct 04:07: Hypocenter depth recalculated from 105.70 to 132.00 km (from 66 to 82 mi). Epicenter location corrected by 6.2 km (3.8 mi) towards SW.Update Sat, 10 Oct 2026, 04:03Seismic-like event, possible earthquake, reported few minutes ago near Dededo Village, Dededo, GuamUnconfirmed quake or seismic-like event reported: Near Dededo Village, Dededo, Guam, 5 minutes agoWe are receiving unverified early reports of ground shaking possibly caused by seismic activity in or near Dededo Village, Dededo, Guam on 10 Oct 2026 (GMT) at approximately 03:58 GMT.There are no details yet on the magnitude or depth of this possible quake. If confirmed, we can expect more accurate data to emerge in the next few minutes. The location, magnitude and time mentioned are indicative, based on our best-fit seismic model. They are temporary until our AllQuakes monitoring service receives more exact scientific data from a national or international seismological agency. Check back here shortly and stay safe.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 & timeOct 10, 2026 03:58:20 UTC - Local time at epicenterSaturday, Oct 10, 2026, at 03:58 am (Universal Time GMT +0)StatusconfirmedMagnitude5.40Depth132 kmEpicenter latitude / longitude13.794°N / 144.9735°EDededo, GuamAlso near: Northern Mariana Islands 33 km (21 mi) awaySeismic antipode13.794°S / 35.027°WShaking intensityIII Weak shaking near epicenterFelt9 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoNorthwest Guam (44 km / 27 mi)Weather at epicenter at time of quakeHeavy Intensity Rain 25.3°C (78 F), humidity: 87%, wind: 7 m/s (14 kts) from NEstimated seismic energy released7.9 x 1012 joules (2.21 gigawatt hours, equivalent to 1898 tons of TNT or 0.1 atomic bombs!) | equivalent to ONE quake of magnitude 5.4 | about seismic energy10 minutes ago reported feltOct 10, 2026 03:58 GMT / Oct 10, 2026 03:58 am (Universal Time)Lat / Lng: 13.794 / 144.9735: Guam RegionSource: EMSCOther sources: BMKG: 6.1 / 10 km, GFZ: 5.4 / 106 kmDetail info | Read user reports | You felt it? - Report it!';storedMarkers.push(['quake-23425296',13.79400,144.97350,'10 minutes ago: Mag. 5.4, Guam Region',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 placesThe closest larger town where the quake might have been felt is Dededo Village, a town with 45,000 inhabitants in Guam, in 34 km (21 mi) distance southwest of the epicenter. People likely experienced weak shaking there. Several smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking. In the capital of the Northern Mariana Islands, Saipan, 179 km (111 mi) away from the epicenter, the earthquake was probably felt as weak shaking.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry27 km (17 mi)S of epicenterChaguian(pop: 2,520)III: WeakYigo Municipality Guam30 km (19 mi)S of epicenterYigo Village(pop: 20,500)III: WeakYigo Municipality Guam34 km (21 mi)SW of epicenterDededo Village(pop: 44,900)III: WeakDededo Guam43 km (26 mi)NE of epicenterSongsong(pop: 593)III: WeakRota Northern Mariana Islands43 km (27 mi)SW of epicenterHagatna(pop: 1,050)III: WeakHagatna Guam53 km (33 mi)SW of epicenterApra Harbor(pop: 2,930)III: WeakSanta Rita Municipality Guam148 km (92 mi)NE of epicenterSan Jose(pop: 15,000)III: WeakTinian Municipality Northern Mariana Islands179 km (111 mi)NE of epicenterSaipan(pop: 48,200)III: WeakSaipan Northern Mariana Islands434 km (270 mi)N of epicenterPatik Camp(pop: 15)II: Very weakAlamagan Island, Northern Islands Northern Mariana Islands489 km (304 mi)N of epicenterPagan Village(pop: 50)II: Very weakPagan Island, Northern Islands Northern Mariana Islands554 km (345 mi)N of epicenterAgrihan Village(pop: 20)II: Very weakAgrihan Island, Northern Islands Northern Mariana Islands581 km (361 mi)S of epicenterFaraulep Village(pop: 221)II: Very weakFaraulep Municipality, State of Yap Micronesia660 km (410 mi)SW of epicenterFais(pop: 215)II: Very weakState of Yap Micronesia775 km (481 mi)SE of epicenterOnoun(pop: 633)II: Very weakState of Chuuk MicronesiaNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quake (9)The first report about ground shaking reached us after only 2 minutes, before other agencies reported it. So far, we have received 9 reports for this quake from Guam. The quake was reported to have been felt in up to approx. 40–50 km (25–31 mi) distance, with isolated cases to have felt the quake even 51 km (32 mi) away.Most reports came from Dededo Village (2 reports), a town with 45,000 inhabitants in Dededo in 34 km (21 mi) distance southwest of the epicenter, Guam, Hagatna (2 reports), the capital of Guam with 1,100 inhabitants in 43 km (27 mi) distance southwest of the epicenter, and Yigo Village (1 report) (30 km or 19 mi to the south) in Yigo Municipality. Further below is a list of places where most people reported this quake.This section is being updated as new data comes in.User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.Contribute:Leave a comment if you find a particular report interesting or want to add to it.Flag as inappropriate.Mark as helpful or interesting.Send your own user report!TranslateNaval base guam (53.8 km SW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 10-15 sChalan Pago (45 km SSW of epicenter) [Map] / Weak shaking (MMI III) / vertical swinging (up and down) / 2-5 s : up and down Dededo (27.8 km SSW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s : On my couch and started swaying side to side Guam (27.9 km SSW of epicenter) [Map] / Weak shaking (MMI III) / 5-10 s : In bed felt shaking guam (47.7 km SW of epicenter) [Map] / Light shaking (MMI IV)56.1 km SSW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)Dededo Guam (34.9 km SSW of epicenter) [Map] / Strong shaking (MMI VI) / both vertical and horizontal swinging / 2-5 s : Hard shake (reported through our iOS app) On a ship (51.6 km SW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 10-15 s34.9 km SSW of epicenter [Map] / Very strong shaking (MMI VII) (reported through our app)List of cities/places with most reportsPlaceDistance from epicenterAverage reported Shaking IntensityNr. of reportsDededo Village, Dededo, Guam(Pop.: 44,943)34 km (21 mi)SW of epicenterVI: Strong shaking2Hagatna, Hagatna, Guam(Pop.: 1,051)43 km (27 mi)SW of epicenterIV: Light shaking2Yigo Village, Yigo Municipality, Guam(Pop.: 20,539)30 km (19 mi)S of epicenterVI: Strong shaking1Note: Only reports with latitude/longitude coordinate positions given (9 in total) could be used for statistics.What is Intensity and the Mercalli Intensity Scale?The amount of shaking that occurs on the surface due to an earthquake is called the intensity. It is commonly measured on the so-called Modified Mercalli Intensity Scale (MMI) ranging from 1 (not felt) to 10 (extreme shaking), and given in Roman numerals as I,II,...IX, X, and often displayed with color codes ranging from light blue to dark red.Earthquake intensity depends mainly on the magnitude and depth of the quake as well as the distance from the epicenter: The further away, the less shaking intensity occurs.Read more about the MMI scale!Number of reports by intensityShaking intensityNumber of reportsMin-Max distance from epicenter (*)Average distance (*)III: Weak shaking328–51 km (17.4–32 mi)41 km (26 mi)IV: Light shaking228–48 km (17.3–30 mi)38 km (23 mi)Notes(*) Reports are filtered to exclude those that are likely highly inaccurate or esaggerated.Only reports with latitude/longitude coordinate positions given (9 in total) could be used for geographic statistics.Get the Android appI didn't feel itI felt this quakeIf you were near the epicenter and felt it, please share your experience and submit a short "I felt it" report! Other users would love to hear about it!If you did NOT feel the quake although you were in the area, please report it as well! Your contribution is valuable to earthquake science and seismic hazard analysis.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 GMT2026-10-10EpicenterAgency5.4132 km82 mi03:58:20.84GUAM REGIONEMSC (European-Mediterranean Seismological Centre)6.110 km6.2 mi(*)03:57:42Mariana Islands335 km (208 mi) epicenter difference with EMSCBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)5.39106 km66 mi03:58:18.61Mariana Islands6.2 km (3.8 mi) epicenter difference with EMSCGFZ (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."; 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: Guam, Mariana Islands (GUMO/IU network) | Distance from quake: 25 km / 16 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: 0.1-5.0 Hz. Source: NSF SAGE Facility IRISWS timeseriesplot Web ServiceSeismic station: Davao, Philippines (DAV/IU network) | Distance from quake: 2247 km / 1396 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 25 km2 (10 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 9 km (5 mi).[More info]Recorded aftershocks, latest first (0 quake)Oct 10, 2026 03:58 am (Universal Time)10 minutes ago - felt5.4132 km0 km - This quakeGuam RegionMain 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 51 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: 0.19 quakes per year (or 1 quake every 5.2 years)Mag. 5 or higher: 3.2 quakes per yearMag. 4 or higher: 48 quakes per year (or 4 quakes per month)Mag. 3 or higher: 69 quakes per year (or 5.7 quakes per month)Mag. 2 or higher: 69 quakes per year (or 5.8 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