Moderate magnitude 4.0 earthquake at 194 km depth20 Oct 02:00 UTC: First to report: NIED after 13 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeOct 20, 2026 01:47:30 UTC - Local time at epicenterTuesday, Oct 20, 2026, at 10:47 am (GMT +9)Statusconfirmed (manually revised)Magnitude4.0Depth194 kmEpicenter latitude / longitude33.082°N / 139.491°EHachijo Shicho, Tokyo, JapanSeismic antipode33.082°S / 40.509°WShaking intensityNot feltPrimary data sourceNIED (National Research Institute for Earth Science and Disaster Resilience)Nearest volcanoHachijo-jima (26 km / 16 mi)Weather at epicenter at time of quakeScattered Clouds 25.9°C (79 F), humidity: 83%, wind: 8 m/s (15 kts) from SSWEstimated seismic energy released6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 tons of TNT) | equivalent to ONE quake of magnitude 4.0 | about seismic energy45 minutes agoOct 20, 2026 01:47 GMT / Oct 20, 2026 10:47 am (GMT +9)Lat / Lng: 33.082 / 139.491: Japan: Near Hachijojima IslandSource: NIEDDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23450420',33.08200,139.49100,'45 minutes ago: Mag. 4.0, Japan: Near Hachijojima Island',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 near the epicenter is Hachijo, a town with 7,200 inhabitants in Japan, in 27 km (17 mi) distance to the east, but it is unlikely that the quake was felt there. DistancePlaceMax. shaking intensity(*)RegionCountry27 km (17 mi)E of epicenterHachijo(pop: 7,210)I: Not feltHachijo Shicho, TokyoJapan184 km (115 mi)N of epicenterShimoda(pop: 21,400)I: Not feltShizuokaJapan206 km (128 mi)NW of epicenterOmaezaki(pop: 31,100)I: Not feltShizuokaJapan213 km (132 mi)N of epicenterIto(pop: 68,800)I: Not feltIto Shi, ShizuokaJapan214 km (133 mi)NW of epicenterSagara(pop: 25,900)I: Not feltMakinohara Shi, ShizuokaJapan214 km (133 mi)N of epicenterTateyama(pop: 50,100)I: Not feltChibaJapan216 km (134 mi)N of epicenterIzu(pop: 30,700)I: Not feltShizuokaJapan218 km (135 mi)NW of epicenterSumiyoshi(pop: 28,900)I: Not feltHaibara-gun, ShizuokaJapan220 km (137 mi)NW of epicenterKikugawa(pop: 48,500)I: Not feltShizuokaJapan220 km (137 mi)N of epicenterMinamiboso(pop: 35,800)I: Not feltMinamiboso Shi, ChibaJapan222 km (138 mi)NW of epicenterMaruobara(pop: 43,500)I: Not feltMakinohara Shi, ShizuokaJapan223 km (139 mi)N of epicenterIzunokuni(pop: 48,600)I: Not feltShizuokaJapan226 km (141 mi)NW of epicenterYaizu(pop: 139,600)I: Not feltShizuokaJapan227 km (141 mi)N of epicenterAtami(pop: 34,200)I: Not feltShizuokaJapan228 km (141 mi)NW of epicenterShimada(pop: 95,700)I: Not feltShizuokaJapan228 km (142 mi)NW of epicenterFujieda(pop: 145,000)I: Not feltShizuokaJapan229 km (142 mi)N of epicenterMiura(pop: 51,500)I: Not feltKanagawaJapan230 km (143 mi)N of epicenterKamizawa(pop: 36,800)I: Not feltTagata, ShizuokaJapan231 km (144 mi)N of epicenterKamogawa(pop: 32,100)I: Not feltChibaJapan232 km (144 mi)NW of epicenterKakegawa(pop: 117,900)I: Not feltShizuokaJapan232 km (144 mi)N of epicenterNumazu(pop: 189,500)I: Not feltShizuokaJapan232 km (144 mi)N of epicenterMishima(pop: 107,900)I: Not feltShizuokaJapan233 km (144 mi)N of epicenterFushimi(pop: 31,700)I: Not feltSuntō, ShizuokaJapan235 km (146 mi)N of epicenterNakatogari(pop: 43,300)I: Not feltSuntō, ShizuokaJapan235 km (146 mi)NW of epicenterShizuoka(pop: 693,400)I: Not feltShizuokaJapan235 km (146 mi)NW of epicenterIwata(pop: 166,700)I: Not feltShizuokaJapan236 km (146 mi)NW of epicenterFukuroi(pop: 88,400)I: Not feltShizuokaJapan239 km (148 mi)N of epicenterSusono(pop: 51,200)I: Not feltShizuokaJapan239 km (149 mi)N of epicenterKurihama(pop: 53,800)I: Not feltYokosuka Shi, KanagawaJapan242 km (151 mi)NW of epicenterHamamatsu(pop: 791,700)I: Not feltShizuokaJapan244 km (151 mi)N of epicenterFuji(pop: 245,400)I: Not feltShizuokaJapan248 km (154 mi)NW of epicenterHamakita(pop: 86,500)I: Not feltHamamatsu Shi, ShizuokaJapan251 km (156 mi)N of epicenterFujinomiya(pop: 132,500)I: Not feltShizuokaJapan256 km (159 mi)NW of epicenterKosai(pop: 59,800)I: Not feltShizuokaJapan270 km (168 mi)NW of epicenterToyohashi(pop: 377,500)I: Not feltAichi-kenJapan271 km (168 mi)NW of epicenterTahara(pop: 60,200)I: Not feltAichi-kenJapan273 km (170 mi)NW of epicenterToyokawa(pop: 184,700)I: Not feltAichi-kenJapan285 km (177 mi)NW of epicenterGamagori(pop: 80,100)I: Not feltAichi-kenJapan291 km (181 mi)N of epicenterTokyo(pop: 9,733,300)I: Not feltTokyoJapan298 km (185 mi)NW of epicenterOkazaki(pop: 384,700)I: Not feltAichi-kenJapanNotes:(*) 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 GMT2026-10-20EpicenterAgency4.0194 km120 mi01:47:30NEAR HACHIJOJIMA ISLANDNIED (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 1 km2 (0 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 2 km (1 mi).[More info]Recorded aftershocks, latest first (0 quake)Oct 20, 2026 10:47 am (GMT +9)45 minutes ago4.0194 km0 km - This quakePhilippine Sea, 29 km W of Hachijo Jima Island, Tokyo, JapanMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 56 years and our earthquake archive back to 1900, there are about 144 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.09 quakes per year (or 1 quake every 11.5 years)Mag. 5 or higher: 0.95 quakes per year (or 1 quake every 1.1 years)Mag. 4 or higher: 13.8 quakes per yearMag. 3 or higher: 52 quakes per year (or 4.3 quakes per month)Mag. 2 or higher: 125 quakes per year (or 10.4 quakes per month)Mag. 1 or higher: 143 quakes per year (or 11.9 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 11 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 10 to 15 years.Number of quakes per yearPrevious quakes in the same area of this earthquakeThe earthquake occurred 5 days after a magnitude 4.1 earthquake had hit on Thursday, Oct 15, 2026, at 02:47 am (GMT +9 local time) in 67 km (42 mi) distance to the west:Mag. 4.1 earthquake Philippine Sea - Tokyo, Japan -The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 5.8. It had occurred 3 years earlier, on Sunday, May 14, 2023, at 05:21 pm (GMT +9 local time) in Philippine Sea, Japan:Mag. 5.8 earthquake Philippine Sea - Tokyo, Japan - May 14, 2023 -The strongest-ever (since 1900) recorded quake in this area measured magnitude 7.9. It had occurred 73 years ago earlier, on Thursday, Nov 26, 1953, at 02:48 am (GMT +9 local time) in North Pacific Ocean, Japan:Mag. 7.9 earthquake North Pacific Ocean - Tokyo, Japan - Nov 26, 1953 -Below is a list and map of larger or recent quakes that had occurred near the epicenter before this earthquake (within up to 100 km/61 mi distance, up to 300 km/183 mi for very large quakes above mag. 7). Filter and sort the list by magnitude or time.Max results102050100AllMagnitudeAll2+3+4+5+6+7+8+Time before48 hours1 week30 days1 year5 years30 yearsAny ageDate and TimeMagDepthDistanceLocationDetailsMapOct 15, 02:47 am (GMT +9)4.1319 km67 km (42 mi) to the WPhilippine Sea, 93 km west of Hachijo Jima Island, Tokyo, Japan I felt itInfoSep 26, 06:32 am (GMT +9)5.0517 km93 km (58 mi) to the NENorth Pacific Ocean, 68 km northeast of Hachijo, Tokyo, JapanInfoSep 26, 12:03 am (GMT +9)4.3252 km43 km (26 mi) to the SWPhilippine Sea, 63 km southwest of Hachijo, Tokyo, JapanInfoSep 14, 01:52 am (GMT +9)4.2333 km71 km (44 mi) to the WPhilippine Sea, 98 km west of Hachijo Jima Island, Tokyo, JapanInfoSep 13, 04:18 am (GMT +9)4.320 km80 km (50 mi) to the NPhilippine Sea, 34 km south of Miyake, Tokyo, Japan 1 reportInfoJul 18, 2024 08:07 pm (GMT +9)5.691 km95 km (59 mi) to the NENorth Pacific Ocean, 71 km northeast of Hachijo Jima Island, Tokyo, Japan 21 reportsInfoMay 14, 2023 07:11 pm (GMT +9)5.613 km43 km (27 mi) to the NPhilippine Sea, 57 km northwest of Hachijo Jima Island, Tokyo, JapanInfoMay 14, 2023 05:21 pm (GMT +9)5.813 km28 km (18 mi) to the NWPhilippine Sea, 46 km northwest of Hachijo Jima Island, Tokyo, JapanInfoMay 14, 2023 05:11 pm (GMT +9)5.419 km35 km (22 mi) to the N 149 km SSE of Shimoda, Japan 3 reportsInfoJul 16, 2021 01:19 pm (GMT +9)5.510 km20 km (13 mi) to the N Izu Islands, Japan Region 2 reportsInfoJul 30, 2019 05:37 am (GMT +9)5.769 km92 km (57 mi) to the ENorth Pacific Ocean, 67 km southeast of Hachijo Jima Island, Tokyo, Japan 23 reportsInfoApr 17, 2013 05:57 pm (GMT +9)5.68.8 km98 km (61 mi) to the NPhilippine Sea, Tokyo, 88 km southeast of Shimoda, Shizuoka, Japan 2 reportsInfoAug 13, 2009 07:48 am (GMT +9)6.653 km89 km (55 mi) to the E 244 km SSE of Tateyama, JapanInfoAug 9, 2009 07:55 pm (GMT +9)7.1292 km144 km (90 mi) to the W 161 km S of ?yama, JapanInfoSep 5, 2004 07:07 pm (GMT +9)7.214 km268 km (166 mi) to the W 94 km SE of Shing?, JapanInfoJul 5, 2001 12:47 pm (GMT +9)5.633 km97 km (60 mi) to the SPhilippine Sea, 103 km south of Hachijo Jima Island, Tokyo, JapanInfoJul 5, 2001 11:05 am (GMT +9)5.333 km93 km (58 mi) to the S 275 km SSE of Shimoda, JapanInfoJul 30, 2000 09:48 pm (GMT +9)5.510 km99 km (62 mi) to the N 85 km SSE of Shimoda, JapanInfoJul 30, 2000 09:25 pm (GMT +9)6.510 km92 km (57 mi) to the NPhilippine Sea, 96 km northwest of Hachijo Jima Island, Tokyo, JapanInfoJul 30, 2000 09:18 am (GMT +9)5.710 km96 km (59 mi) to the N 90 km SSE of Shimoda, JapanInfoJul 7, 1998 11:32 pm (GMT +9)5.5113 km73 km (46 mi) to the SENorth Pacific Ocean, 62 km south of Hachijo Jima Island, Tokyo, JapanInfoSep 3, 1991 05:44 pm (GMT +9)6.427 km91 km (57 mi) to the NWPhilippine Sea, 112 km northwest of Hachijo Jima Island, Tokyo, JapanInfoSep 24, 1990 07:09 am (GMT +9)6.210 km76 km (47 mi) to the W 162 km SSE of ?yama, JapanInfoSep 24, 1990 06:13 am (GMT +9)6.510 km82 km (51 mi) to the W 153 km SSE of ?yama, JapanInfoMar 12, 1990 07:46 am (GMT +9)5.524 km90 km (56 mi) to the NWPhilippine Sea, 114 km west of Hachijo Jima Island, Tokyo, JapanInfoJan 1, 1984 06:03 pm (GMT +9)7.2368 km250 km (156 mi) to the W 77 km ESE of Owase, JapanInfoNov 30, 1983 05:59 am (GMT +9)5.6137 km72 km (45 mi) to the SE Izu Islands, Japan regionInfoOct 3, 1983 10:33 pm (GMT +9)6.012 km96 km (59 mi) to the NPhilippine Sea, 96 km north of Hachijo Jima Island, Tokyo, JapanInfoDec 29, 1982 04:02 pm (GMT +9)5.519 km77 km (48 mi) to the N 107 km SSE of Shimoda, JapanInfoDec 28, 1982 03:37 pm (GMT +9)6.322 km83 km (52 mi) to the NPhilippine Sea, 86 km northwest of Hachijo Jima Island, Tokyo, JapanInfoDec 28, 1982 10:52 am (GMT +9)5.520 km79 km (49 mi) to the N 107 km SSE of Shimoda, JapanInfoJul 8, 1965 06:38 am (GMT +9)5.3226 km49 km (31 mi) to the SW Southeast of Honshu, JapanInfoDec 23, 1956 08:12 am (GMT +9)6.115 km69 km (43 mi) to the N Izu Islands, Japan regionInfoDec 22, 1956 05:10 am (GMT +9)6.015 km69 km (43 mi) to the N Izu Islands, Japan regionInfoNov 26, 1953 02:48 am (GMT +9)7.925 km223 km (139 mi) to the NENorth Pacific Ocean, 197 km northeast of Hachijo Jima Island, Tokyo, JapanInfoOct 25, 1936 04:58 am (Universal Time)5.515 km65 km (40 mi) to the NPhilippine Sea, 71 km northwest of Hachijo Jima Island, Tokyo, JapanInfoSep 24, 1935 04:53 pm (Universal Time)5.415 km64 km (40 mi) to the W 157 km S of Shimoda, JapanInfoMar 29, 1928 05:06 am (Universal Time)7.0405 km210 km (131 mi) to the SW Izu Islands, Japan regionInfoSep 2, 1923 02:46 am (Universal Time)7.815 km215 km (134 mi) to the N 5.6 km east of Tateyama, Chiba, JapanInfoSep 1, 1923 03:03 am (Universal Time)7.335 km224 km (139 mi) to the NNorth Pacific Ocean, 39 km south of Yokohama, Kanagawa, JapanInfoSep 1, 1923 02:58 am (Universal Time)7.915 km244 km (152 mi) to the N 14 km south of Isehara, Kanagawa, JapanInfoApr 21, 1916 08:31 pm (GMT +9)7.80 km141 km (88 mi) to the ENorth Pacific Ocean, 113 km east of Hachijo Jima Island, Tokyo, JapanInfoFeb 13, 1910 03:10 am (GMT +9)7.40 km93 km (58 mi) to the W Japan: Honshu: S. ofInfoJan 21, 1906 01:49 pm (Universal Time)7.4300 km182 km (113 mi) to the NW 50 km SSW of ?yama, JapanInfoOct 24, 1905 03:46 am (Universal Time)7.3250 km112 km (69 mi) to the NWPhilippine Sea, 123 km northwest of Hachijo Jima Island, Tokyo, JapanInfoNov 5, 1900 07:42 am (Universal Time)6.65 km91 km (57 mi) to the N Southeast of HonshuInfoMap of earlier quakes in the area of this quakeMax results102050100AllMagnitudeAll2+3+4+5+6+7+8+Time before48 hours1 week30 days1 year5 years30 yearsAny ageOldest quakes are shown in yellow, most recent in red.[quakes -][quakes +][smaller][bigger]