Light mag. 3.9 earthquake - Japan: Rumoi Region on Tuesday, Sep 29, 2026, at 11:21 am (GMT +9)

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Light magnitude 3.9 earthquake at 315 km depth29 Sep 02:30 UTC: First to report: NIED after 8 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeSep 29, 2026 02:21:41 UTC - Local time at epicenterTuesday, Sep 29, 2026, at 11:21 am (GMT +9)Statusconfirmed (manually revised)Magnitude3.9Depth315 kmEpicenter latitude / longitude44.364°N / 141.847°ETomamae Gun, Hokkaido, JapanSeismic antipode44.364°S / 38.153°WShaking intensityNot feltPrimary data sourceNIED (National Research Institute for Earth Science and Disaster Resilience)Nearest volcanoRishiri (102 km / 63 mi)Weather at epicenter at time of quakeOvercast Clouds 15°C (59 F), humidity: 88%, wind: 8 m/s (15 kts) from NWEstimated 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 energy17 minutes agoSep 29, 2026 02:21 GMT / Sep 29, 2026 11:21 am (GMT +9)Lat / Lng: 44.364 / 141.847: Japan: Rumoi RegionSource: NIEDDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23398165',44.36400,141.84700,'17 minutes ago: Mag. 3.9, Japan: Rumoi Region',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+="&notFelt=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 near the epicenter is Haboro, a town with 7,300 inhabitants in Japan, in 11.5 km (7 mi) distance to the west, but it is unlikely that the quake was felt there. DistancePlaceMax. shaking intensity(*)RegionCountry12 km (7 mi)W of epicenterHaboro(pop: 7,340)I: Not feltTomamae Gun, HokkaidoJapan20 km (12 mi)N of epicenterShosanbetsu(pop: 1,250)I: Not feltTomamae Gun, HokkaidoJapan38 km (24 mi)N of epicenterKanaura(pop: 2,970)I: Not feltTeshio Gun, HokkaidoJapan41 km (26 mi)E of epicenterBifuka(pop: 4,610)I: Not feltNakagawa Gun, HokkaidoJapan46 km (29 mi)SE of epicenterHorokanai(pop: 1,370)I: Not feltUryu Gun, HokkaidoJapan48 km (30 mi)SE of epicenterMinamishibetsucho(pop: 19,800)I: Not feltShibetsu Shi, HokkaidoJapan49 km (30 mi)E of epicenterNayoro(pop: 27,300)I: Not feltHokkaidoJapan49 km (30 mi)SE of epicenterShibetsu(pop: 17,900)I: Not feltHokkaidoJapan51 km (31 mi)S of epicenterRumoi(pop: 26,500)I: Not feltHokkaidoJapan53 km (33 mi)N of epicenterNakagawa(pop: 1,590)I: Not feltHokkaidoJapan58 km (36 mi)N of epicenterTeshio(pop: 3,240)I: Not feltHokkaidoJapan59 km (37 mi)SE of epicenterWassamu(pop: 3,550)I: Not feltKamikawa-gun (Teshio no kuni), HokkaidoJapan63 km (39 mi)SW of epicenterMashike(pop: 4,630)I: Not feltHokkaidoJapan63 km (39 mi)S of epicenterNumata(pop: 3,210)I: Not feltUryu Gun, HokkaidoJapan67 km (42 mi)E of epicenterShinshimokawa(pop: 3,840)I: Not feltKamikawa-gun (Teshio no kuni), HokkaidoJapan75 km (46 mi)S of epicenterFukagawa(pop: 26,200)I: Not feltHokkaidoJapan78 km (48 mi)SE of epicenterAsahikawa(pop: 333,500)I: Not feltHokkaidoJapan81 km (50 mi)SE of epicenterToma(pop: 6,320)I: Not feltKamikawa-gun (Ishikari), HokkaidoJapan82 km (51 mi)N of epicenterToyotomi(pop: 4,050)I: Not feltTeshio Gun, HokkaidoJapan86 km (54 mi)NE of epicenterEsashi(pop: 8,580)I: Not feltHokkaidoJapan89 km (55 mi)SE of epicenterHigashikagura(pop: 10,100)I: Not feltKamikawa-gun (Ishikari), HokkaidoJapan90 km (56 mi)S of epicenterTakikawa(pop: 45,100)I: Not feltHokkaidoJapan92 km (57 mi)S of epicenterAkabira(pop: 14,200)I: Not feltHokkaidoJapan94 km (58 mi)SE of epicenterKamikawa(pop: 5,290)I: Not feltHokkaidoJapan98 km (61 mi)S of epicenterSunagawa(pop: 20,100)I: Not feltHokkaidoJapan99 km (61 mi)S of epicenterAshibetsu(pop: 19,100)I: Not feltHokkaidoJapan100 km (62 mi)SE of epicenterBiei(pop: 10,400)I: Not feltKamikawa-gun (Ishikari), HokkaidoJapan112 km (70 mi)N of epicenterMakubetsu(pop: 26,600)I: Not feltWakkanai Shi, HokkaidoJapan116 km (72 mi)S of epicenterBibai(pop: 29,000)I: Not feltHokkaidoJapan117 km (73 mi)N of epicenterWakkanai(pop: 33,900)I: Not feltHokkaidoJapan120 km (74 mi)E of epicenterMombetsu(pop: 23,000)I: Not feltMonbetsu Shi, HokkaidoJapan121 km (75 mi)S of epicenterShimo-furano(pop: 25,900)I: Not feltFurano Shi, HokkaidoJapan121 km (75 mi)S of epicenterFurano(pop: 21,100)I: Not feltHokkaidoJapan130 km (81 mi)S of epicenterIwamizawa(pop: 85,100)I: Not feltHokkaidoJapan131 km (81 mi)S of epicenterIshikari(pop: 58,800)I: Not feltHokkaidoJapan142 km (88 mi)S of epicenterEbetsu(pop: 134,000)I: Not feltHokkaidoJapan147 km (92 mi)SW of epicenterOtaru(pop: 115,300)I: Not feltHokkaidoJapan150 km (93 mi)S of epicenterSapporo(pop: 1,973,800)I: Not feltHokkaidoJapan982 km (610 mi)S of epicenterTokyo(pop: 9,733,300): 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 GMT2026-09-29EpicenterAgency3.9315 km196 mi02:21:41RUMOI REGIONNIED (National Research Institute for Earth Science and Disaster Resilience)Earthquake statisticsAverage number of earthquakesBased on data from the past 56 years and our earthquake archive back to 1900, there are about 226 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.03 quakes per year (or 1 quake every 31.3 years)Mag. 5 or higher: 0.22 quakes per year (or 1 quake every 4.5 years)Mag. 4 or higher: 11.2 quakes per yearMag. 3 or higher: 33.6 quakes per year (or 2.8 quakes per month)Mag. 2 or higher: 55 quakes per year (or 4.6 quakes per month)Mag. 1 or higher: 110 quakes per year (or 9.2 quakes per month)The area where this quake occurred has a high level of seismic activity. It has had at least 4 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 30 to 35 years.Number of quakes per yearPrevious quakes in the same area of this earthquake