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The quake had a very shallow depth of 25 km (15 mi) and was not felt (or at least not reported so).Quake Data | Interactive map | User reports | Aftershocks | Earlier quakes here | Quakes in Japan | Niigata | Nagano | ToyamaHint: Click on the image to see different maps of this quake!Moderate magnitude 4.7 earthquake at 25 km depth31 May 21:01 UTC: First to report: NIED after 6 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeMay 31, 2026 20:54:39 UTC - Local time at epicenterMonday, Jun 1, 2026, at 05:54 am (GMT +9)Statusconfirmed (manually revised)Magnitude4.7Depth24.9 kmEpicenter latitude / longitude37.464°N / 138.127°ENiigata, JapanSeismic antipode37.464°S / 41.873°WShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceNIED (National Research Institute for Earth Science and Disaster Resilience)Nearest volcanoSekita (59 km / 37 mi)Estimated seismic energy released7.1 x 1011 joules (197 megawatt hours, equivalent to 169 tons of TNT) | equivalent to ONE quake of magnitude 4.7 | about seismic energy7 minutes agoMay 31, 2026 20:54 GMT / Jun 1, 2026 05:54 am (GMT +9)Lat / Lng: 37.464 / 138.127: Japan: Off S Niigata PrefSource: NIEDDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23052702',37.46400,138.12700,'7 minutes ago: Mag. 4.7, Japan: Off S Niigata Pref',html,'quakes-6-24.png',25,25,12,12,125]); 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 JapanNearby placesThe closest larger town where the quake might have been felt is Niigata, a city with more than 800,000 inhabitants in Japan, in 95 km (59 mi) distance northeast of the epicenter. People likely experienced weak shaking there. Many smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking. In the capital of Japan, Tokyo, 242 km (150 mi) away from the epicenter, the earthquake was probably felt as very weak shaking.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry36 km (23 mi)S of epicenterJoetsu(pop: 189,400)IV: LightJoetsu Shi, NiigataJapan39 km (24 mi)E of epicenterKashiwazaki(pop: 86,200)IV: LightNiigataJapan50 km (31 mi)E of epicenterIzumozaki(pop: 4,110)III: WeakSanto-gun, NiigataJapan50 km (31 mi)S of epicenterMyoko(pop: 30,400)III: WeakNiigataJapan52 km (32 mi)S of epicenterArai(pop: 27,500)III: WeakMyoko-shi, NiigataJapan54 km (33 mi)SW of epicenterItoigawa(pop: 40,800)III: WeakNiigataJapan62 km (39 mi)E of epicenterOjiya(pop: 34,700)III: WeakNiigataJapan64 km (40 mi)E of epicenterNagaoka(pop: 266,900)III: WeakNiigataJapan66 km (41 mi)N of epicenterSado(pop: 51,500)III: WeakNiigataJapan68 km (42 mi)SE of epicenterTokamachi(pop: 53,300)III: WeakTokamachi-shi, NiigataJapan69 km (43 mi)SE of epicenterOwarino(pop: 8,990)III: WeakNakaonuma-gun, NiigataJapan71 km (44 mi)E of epicenterYoshida-kasugacho(pop: 25,500)III: WeakTsubame Shi, NiigataJapan72 km (44 mi)S of epicenterIiyama(pop: 20,100)III: WeakNaganoJapan72 km (44 mi)E of epicenterMitsuke(pop: 43,200)III: WeakNiigataJapan74 km (46 mi)N of epicenterRyotsu-minato(pop: 16,400)III: WeakSado Shi, NiigataJapan74 km (46 mi)NE of epicenterMaki(pop: 29,000)III: WeakNiigata Shi, NiigataJapan74 km (46 mi)E of epicenterTsubame(pop: 77,400)III: WeakNiigataJapan75 km (46 mi)E of epicenterSanjo(pop: 94,600)III: WeakSanjo Shi, NiigataJapan77 km (48 mi)E of epicenterTochio-honcho(pop: 23,000)III: WeakNagaoka Shi, NiigataJapan78 km (48 mi)E of epicenterUonuma(pop: 34,500)III: WeakNiigataJapan79 km (49 mi)SE of epicenterMinamiuonuma(pop: 55,400)III: WeakNiigataJapan80 km (49 mi)SE of epicenterShiozawa(pop: 20,200)III: WeakMinamiuonuma Shi, NiigataJapan80 km (50 mi)SE of epicenterMuikamachi(pop: 29,100)III: WeakMinamiuonuma Shi, NiigataJapan81 km (50 mi)SW of epicenterNyuzen(pop: 25,000)III: WeakShimoniikawa Gun, ToyamaJapan82 km (51 mi)S of epicenterNakano(pop: 42,700)III: WeakNaganoJapan83 km (52 mi)E of epicenterKamo(pop: 26,000)III: WeakNiigataJapan86 km (53 mi)NE of epicenterShirone(pop: 41,400)III: WeakNiigata Shi, NiigataJapan87 km (54 mi)SW of epicenterKurobe-shi(pop: 41,600)III: WeakKurobe Shi, ToyamaJapan88 km (54 mi)E of epicenterTagami(pop: 11,500)III: WeakMinamikanbara-gun, NiigataJapan88 km (55 mi)W of epicenterUshitsu(pop: 15,700)III: WeakHosu Gun, Ishikawa-kenJapan91 km (56 mi)S of epicenterNagano(pop: 372,800)III: WeakNaganoJapan92 km (57 mi)S of epicenterSuzaka(pop: 54,000)III: WeakNaganoJapan95 km (59 mi)NE of epicenterNiigata(pop: 797,600)III: WeakNiigataJapan95 km (59 mi)NE of epicenterNiitsu-honcho(pop: 65,900)III: WeakNiigata Shi, NiigataJapan95 km (59 mi)E of epicenterMuramatsu(pop: 19,700)III: WeakGosen Shi, NiigataJapan96 km (60 mi)E of epicenterGosen(pop: 48,500)III: WeakNiigataJapan98 km (61 mi)NE of epicenterKameda-honcho(pop: 32,800)III: WeakNiigata Shi, NiigataJapan98 km (61 mi)SW of epicenterUozu(pop: 45,800)III: WeakToyamaJapan119 km (74 mi)NE of epicenterShibata(pop: 96,200)III: WeakNiigataJapan242 km (150 mi)SE of epicenterTokyo(pop: 9,733,300)II: Very weakTokyoJapanNotes:(*) 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 GMT2026-05-31EpicenterAgency4.725 km15 mi20:54:39OFF S NIIGATA PREFNIED (National Research Institute for Earth Science and Disaster Resilience)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 5 km2 (2 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 4 km (2 mi).[More info]Recorded aftershocks, latest first (0 quake)Jun 1, 2026 05:54 am (GMT +9)7 minutes ago4.725 km0 km - This quakeJapan: Off S Niigata PrefMain Shock (this quake)MoreMap of aftershocksPrevious quakes in the same area of this earthquake7 minutes agoMay 31, 2026 20:54 GMT / Jun 1, 2026 05:54 am (GMT +9)Lat / Lng: 37.464 / 138.127: Japan: Off S Niigata PrefSource: NIEDDetail info | You felt it? - Report it!',4.7,47, '#bb202a', 0.9,1.5, '#bb202a', 0.27);map2.addToMap('thisQuake',37.464,138.127,'7 minutes ago: Mag. 4.7, Japan: Off S Niigata Pref','Earthquake: Mag 4.7 / 25 km (15 mi) depth7 minutes agoMay 31, 2026 20:54 GMT / Jun 1, 2026 05:54 am (GMT +9)Lat / Lng: 37.464 / 138.127: Japan: Off S Niigata PrefSource: NIEDDetail info | You felt it? - Report it!','default'); // this will be local to this table obj function putQuakeOnMap(id,lat,lon,time,title,html,mag,zIndex) { qTableOlder.putQuakeOnMap(id,lat,lon,time,title,html,mag,zIndex); } map2.circleScale=0.5;qTableOlder.usePalette=1;qTableOlder.startVal=qTableOlder.referenceTime-(80*365.25*86400);qTableOlder.endVal=qTableOlder.referenceTime; qTableOlder.assignMap(map2); (async function(){await new Promise(r => setTimeout(r,4000));map2.map.setZoom(7)})(); })(); (async function(){while(typeof mkRequest=="undefined")await new Promise(r=>setTimeout(r,500));mkRequest("https://server2.allquakes.com/api/getPrevious.php?quakeId=23052702","get","",function(httpObj){let r=httpObj.responseText,d=document;if(""!=r&&200==httpObj.status){let o=JSON.parse(r);if(!o){d.getElementById("olderQuakesSection").remove();return};let table=d.getElementById("qTableOlder");table.innerHTML+=o.tableRows,qTableOlder.alternateBg(),d.getElementById("placeholder_largestQText").innerHTML=o.html,d.getElementById("sectionPreviousCWrap").style.display="",eval(o.js)}})})();]]>