Light magnitude 3.9 earthquake at 26 km depth23 Aug 00:45 UTC: First to report: NIED after 13 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeAug 23, 2026 00:32:23 UTC - Local time at epicenterSunday, Aug 23, 2026, at 09:32 am (GMT +9)Statusconfirmed (manually revised)Magnitude3.9Depth25.7 kmEpicenter latitude / longitude36.92°N / 141.984°EJapanSeismic antipode36.92°S / 38.016°WShaking intensityIII Weak shaking near epicenterFelt0 reportsPrimary data sourceNIED (National Research Institute for Earth Science and Disaster Resilience)Nearest volcanoAdatara (170 km / 106 mi)Weather at epicenter at time of quakeOvercast Clouds 24.9°C (77 F), humidity: 91%, wind: 5 m/s (10 kts) from ENEEstimated 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 energy29 minutes agoAug 23, 2026 00:32 GMT / Aug 23, 2026 09:32 am (GMT +9)Lat / Lng: 36.92 / 141.984: Japan: E Off Fukushima PrefSource: NIEDDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23304738',36.92000,141.98400,'29 minutes ago: Mag. 3.9, Japan: E Off Fukushima Pref',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]Most recent quakes Top 20 past 24 hrs Quakes in JapanNearby placesThe closest larger town where the quake might have been felt is Oyauchi, a town with 5,400 inhabitants in Japan, in 94 km (59 mi) distance west of the epicenter. People likely experienced very weak shaking there. In the capital of Japan, Tokyo, 247 km (153 mi) away from the epicenter, the earthquake could not be felt.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry94 km (59 mi)W of epicenterOyauchi(pop: 5,410)II: Very weakFutaba-gun, FukushimaJapan98 km (61 mi)NW of epicenterIde(pop: 3,710)II: Very weakFutaba-gun, FukushimaJapan99 km (61 mi)W of epicenterIwaki(pop: 357,300)II: Very weakFukushimaJapan107 km (67 mi)NW of epicenterNamie(pop: 21,900)II: Very weakFutaba-gun, FukushimaJapan111 km (69 mi)W of epicenterKitaibaraki(pop: 41,800)II: Very weakIbarakiJapan115 km (71 mi)W of epicenterTakahagi(pop: 27,700)II: Very weakIbarakiJapan119 km (74 mi)NW of epicenterMinami-Soma(pop: 59,000)II: Very weakMinamisoma Shi, FukushimaJapan124 km (77 mi)W of epicenterHitachi(pop: 174,500)II: Very weakIbarakiJapan135 km (84 mi)NW of epicenterSoma(pop: 34,900)II: Very weakSoma Shi, FukushimaJapan135 km (84 mi)NW of epicenterTamura(pop: 35,200)II: Very weakFukushimaJapan136 km (85 mi)W of epicenterFunaishikawa(pop: 35,300)II: Very weakNaka-gun, IbarakiJapan136 km (85 mi)W of epicenterHitachi-ota(pop: 48,600)II: Very weakHitachi-ota Shi, IbarakiJapan138 km (86 mi)NW of epicenterFunehikimachi-funehiki(pop: 23,500)II: Very weakTamura-shi, FukushimaJapan139 km (86 mi)W of epicenterIshikawa(pop: 18,800)II: Very weakFukushimaJapan142 km (88 mi)W of epicenterInada(pop: 53,500)II: Very weakNaka-shi, IbarakiJapan142 km (88 mi)SW of epicenterHitachi-Naka(pop: 156,600)II: Very weakHitachinaka Shi, IbarakiJapan143 km (89 mi)SW of epicenterKatsuta(pop: 156,000)II: Very weakHitachinaka Shi, IbarakiJapan146 km (90 mi)W of epicenterOmiya(pop: 27,600)II: Very weakHitachi-omiya Shi, IbarakiJapan151 km (94 mi)SW of epicenterMito(pop: 270,700)II: Very weakIbarakiJapan156 km (97 mi)NW of epicenterNihommatsu(pop: 53,600)II: Very weakNihonmatsu Shi, FukushimaJapan157 km (97 mi)SW of epicenterHokota(pop: 46,000)II: Very weakIbarakiJapan157 km (97 mi)SW of epicenterOkunoya(pop: 34,600)II: Very weakHigashiibaraki-gun, IbarakiJapan159 km (99 mi)NW of epicenterKakuda(pop: 33,200)I: Not feltMiyagiJapan159 km (99 mi)NW of epicenterWatari(pop: 33,500)I: Not feltMiyagiJapan160 km (99 mi)SW of epicenterKashima-shi(pop: 67,000)I: Not feltIbarakiJapan161 km (100 mi)NW of epicenterHobaramachi(pop: 24,500)I: Not feltDate-shi, FukushimaJapan163 km (101 mi)NW of epicenterFukushima(pop: 294,200)I: Not feltFukushimaJapan164 km (102 mi)SW of epicenterKamisu(pop: 95,500)I: Not feltIbarakiJapan165 km (102 mi)NW of epicenterDate(pop: 59,600)I: Not feltFukushimaJapan165 km (103 mi)NW of epicenterIwanuma(pop: 44,100)I: Not feltMiyagiJapan167 km (104 mi)SW of epicenterNamegata(pop: 32,200)I: Not feltIbarakiJapan168 km (104 mi)SW of epicenterHasaki(pop: 39,200)I: Not feltChoshi Shi, ChibaJapan168 km (104 mi)SW of epicenterChoshi(pop: 58,400)I: Not feltChoshi Shi, ChibaJapan169 km (105 mi)NW of epicenterNatori-shi(pop: 78,700)I: Not feltNatori Shi, MiyagiJapan170 km (106 mi)NW of epicenterShiroishi(pop: 33,300)I: Not feltMiyagiJapan174 km (108 mi)NW of epicenterMurata(pop: 38,300)I: Not feltShibata-gun, MiyagiJapan175 km (109 mi)SW of epicenterKatori-shi(pop: 74,500)I: Not feltChibaJapan176 km (109 mi)SW of epicenterSawara(pop: 47,200)I: Not feltKatori-shi, ChibaJapan179 km (111 mi)SW of epicenterAsahi(pop: 64,700)I: Not feltChibaJapan247 km (153 mi)SW of epicenterTokyo(pop: 9,733,300)I: Not feltTokyoJapanNotes:(*) 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 GMT2026-08-23EpicenterAgency3.926 km16 mi00:32:23E OFF FUKUSHIMA PREFNIED (National Research Institute for Earth Science and Disaster Resilience)Earthquake statisticsAverage number of earthquakesBased on data from the past 26 years and our earthquake archive back to 1900, there are about 5,100 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.14 quakes per year (or 1 quake every 7.1 years)Mag. 6 or higher: 1.07 quakes per yearMag. 5 or higher: 17.9 quakes per yearMag. 4 or higher: 86 quakes per year (or 7.2 quakes per month)Mag. 3 or higher: 322 quakes per year (or 26.9 quakes per month)Mag. 2 or higher: 1,200 quakes per year (or 3.2 quakes per day)Mag. 1 or higher: 4,500 quakes per year (or 12.4 quakes per day)The area where this quake occurred has a very high level of seismic activity. It has had at least 18 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 5 to 10 years.Number of quakes per yearPrevious quakes in the same area of this earthquake