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The quake had a great depth of 356 km (221 mi) and was not felt (or at least not reported so).Quake Data | Interactive map | User reports | Aftershocks | Earlier quakes here | Quakes in Japan | Mie-ken | Aichi-ken | ShizuokaHint: Click on the image to see different maps of this quake!Strong magnitude 5.4 earthquake at 356 km depth31 Jul 23:32 UTC: First to report: NIED after 8 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeJul 31, 2025 23:24:14 UTC - Local time at epicenterFriday, Aug 1, 2025, at 08:24 am (GMT +9)Statusunconfirmed (uncertain whether an earthquake with these data happened)Magnitude5.4Depth356 kmEpicenter latitude / longitude34.593°N / 136.915°EToba-shi, Mie-ken, JapanSeismic antipode34.593°S / 43.085°WShaking intensityII Very weak shakingFelt0 reportsPrimary data sourceNIED (National Research Institute for Earth Science and Disaster Resilience)Nearest volcanoUeno (123 km / 76 mi)Estimated 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 energy8 minutes agoJul 31, 2025 23:24 GMT / Aug 1, 2025 08:24 am (GMT +9)Lat / Lng: 34.593 / 136.915: Japan: Ise Bay RegionSource: NIEDDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22011578',34.59300,136.91500,'8 minutes ago: Mag. 5.4, Japan: Ise Bay 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 hrs Quakes in JapanNearby placesThe closest larger town where the quake might have been felt is Hamamatsu, a city with more than 790,000 inhabitants in Japan, in 76 km (47 mi) distance east of the epicenter. People likely experienced very 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, 280 km (174 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(*)RegionCountry23 km (14 mi)SW of epicenterIse(pop: 123,500)II: Very weakMie-kenJapan32 km (20 mi)N of epicenterHanda(pop: 117,900)II: Very weakAichi-kenJapan33 km (20 mi)N of epicenterTokoname(pop: 58,700)II: Very weakAichi-kenJapan33 km (20 mi)N of epicenterHekinan(pop: 72,500)II: Very weakAichi-kenJapan33 km (20 mi)N of epicenterNishio(pop: 170,000)II: Very weakAichi-kenJapan33 km (21 mi)E of epicenterTahara(pop: 60,200)II: Very weakAichi-kenJapan39 km (25 mi)NE of epicenterGamagori(pop: 80,100)II: Very weakAichi-kenJapan40 km (25 mi)NW of epicenterTsu(pop: 163,500)II: Very weakMie-kenJapan43 km (27 mi)N of epicenterAnjo(pop: 188,700)II: Very weakAnjo Shi, Aichi-kenJapan44 km (27 mi)N of epicenterKariya(pop: 153,800)II: Very weakAichi-kenJapan44 km (28 mi)NW of epicenterSuzuka(pop: 191,500)II: Very weakMie-kenJapan46 km (28 mi)N of epicenterChita(pop: 84,400)II: Very weakAichi-kenJapan46 km (29 mi)NE of epicenterOkazaki(pop: 384,700)II: Very weakAichi-kenJapan47 km (29 mi)N of epicenterChiryu(pop: 72,200)II: Very weakAichi-kenJapan47 km (29 mi)NE of epicenterToyohashi(pop: 377,500)II: Very weakAichi-kenJapan47 km (29 mi)N of epicenterObu(pop: 93,100)II: Very weakObu Shi, Aichi-kenJapan48 km (30 mi)N of epicenterTokai(pop: 113,800)II: Very weakTokai Shi, Aichi-kenJapan50 km (31 mi)NW of epicenterYokkaichi(pop: 295,800)II: Very weakMie-kenJapan50 km (31 mi)N of epicenterToyoake(pop: 69,300)II: Very weakAichi-kenJapan51 km (32 mi)NE of epicenterToyokawa(pop: 184,700)II: Very weakAichi-kenJapan56 km (35 mi)NW of epicenterKuwana(pop: 140,100)II: Very weakMie-kenJapan57 km (35 mi)E of epicenterKosai(pop: 59,800)II: Very weakShizuokaJapan58 km (36 mi)N of epicenterMiyoshi(pop: 62,000)II: Very weakAichi-kenJapan59 km (36 mi)N of epicenterToyota(pop: 426,200)II: Very weakAichi-kenJapan62 km (38 mi)N of epicenterNisshin(pop: 91,800)II: Very weakAichi-kenJapan66 km (41 mi)N of epicenterAma(pop: 86,100)II: Very weakAichi-kenJapan69 km (43 mi)N of epicenterOwariasahi(pop: 83,100)II: Very weakAichi-kenJapan73 km (45 mi)N of epicenterKitanagoya(pop: 86,400)II: Very weakAichi-kenJapan73 km (45 mi)N of epicenterKasugai(pop: 308,700)II: Very weakAichi-kenJapan73 km (45 mi)N of epicenterSeto(pop: 127,800)II: Very weakAichi-kenJapan74 km (46 mi)W of epicenterIga(pop: 88,900)II: Very weakMie-kenJapan74 km (46 mi)W of epicenterUeno-ebisumachi(pop: 61,600)II: Very weakIga-shi, Mie-kenJapan74 km (46 mi)N of epicenterInazawa(pop: 134,800)II: Very weakAichi-kenJapan76 km (47 mi)E of epicenterHamamatsu(pop: 791,700)II: Very weakShizuokaJapan76 km (47 mi)W of epicenterNabari(pop: 77,000)II: Very weakMie-kenJapan77 km (48 mi)N of epicenterKomaki(pop: 148,900)II: Very weakAichi-kenJapan79 km (49 mi)N of epicenterIchinomiya(pop: 380,100)II: Very weakAichi-kenJapan83 km (52 mi)N of epicenterTajimi(pop: 107,800)II: Very weakGifuJapan266 km (165 mi)E of epicenterYokohama(pop: 3,761,600)II: Very weakKanagawaJapan280 km (174 mi)NE of epicenterTokyo(pop: 8,336,600)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!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 GMT2025-07-31EpicenterAgency5.4356 km221 mi23:24:14ISE BAY REGIONNIED (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 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)Aug 1, 2025 08:24 am (GMT +9)8 minutes ago5.4356 km0 km - This quakeJapan: Ise Bay RegionMain Shock (this quake)MoreMap of aftershocksPrevious quakes in the same area of this earthquake8 minutes agoJul 31, 2025 23:24 GMT / Aug 1, 2025 08:24 am (GMT +9)Lat / Lng: 34.593 / 136.915: Japan: Ise Bay RegionSource: NIEDDetail info | You felt it? - Report it!',5.4,54, '#bb202a', 0.9,1.5, '#bb202a', 0.27);map2.addToMap('thisQuake',34.593,136.915,'8 minutes ago: Mag. 5.4, Japan: Ise Bay Region','Earthquake: Mag 5.4 / 356 km (221 mi) depth8 minutes agoJul 31, 2025 23:24 GMT / Aug 1, 2025 08:24 am (GMT +9)Lat / Lng: 34.593 / 136.915: Japan: Ise Bay RegionSource: 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=22011578","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)}})})();]]>Sources: VolcanoDiscovery / VolcanoAdventures and other sources as noted.Use of material: Most text and images on our websites are owned by us. Re-use is generally not permitted without authorization. Contact us for licensing rights.