Moderate magnitude 4.0 earthquake at 70 km depth23 Apr 14:55 UTC: First to report: VolcanoDiscovery after 2 minutes.23 Apr 15:00: Now using data updates from EMSCUpdate Thu, 23 Apr 2026, 14:58Seismic-like event, possible earthquake, reported few minutes ago near Chiba, Chiba, JapanUnconfirmed quake or seismic-like event reported: 14 km north of Chiba, Chiba, Japan, 6 minutes agoWe are receiving unverified early reports of ground shaking possibly caused by seismic activity in or near Chiba, Chiba, Japan on 23 Apr 2026 (GMT) at approximately 14:52 GMT.There are no details yet on the magnitude or depth of this possible quake. If confirmed, we can expect more accurate data to emerge in the next few minutes. The location, magnitude and time mentioned are indicative, based on our best-fit seismic model. They are temporary until our AllQuakes monitoring service receives more exact scientific data from a national or international seismological agency. Check back here shortly and stay safe.If you were or still are in this area during the quake help others with your feedback and report it here.Download the Volcanoes & Earthquakes app and get one of the fastest seismic alerts online: Android | iOSI didn't feel itI felt this quakeEarthquake detailsDate & timeApr 23, 2026 14:53:30 UTC - Local time at epicenterThursday, Apr 23, 2026, at 11:53 pm (GMT +9)StatusconfirmedMagnitude4.00Depth70 kmEpicenter latitude / longitude35.8°N / 140.2°EInzai-shi, Chiba, JapanSeismic antipode35.8°S / 39.8°WShaking intensityII Very weak shakingFelt10 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoAkagi (123 km / 76 mi)Weather at epicenter at time of quakeModerate Rain 12.7°C (55 F), humidity: 92%, wind: 6 m/s (12 kts) from NNEEstimated 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 energy12 minutes ago reported feltApr 23, 2026 14:53 GMT / Apr 23, 2026 11:53 pm (GMT +9)Lat / Lng: 35.8 / 140.2: Near East Coast OF Honshu, JapanSource: EMSCOther sources: NIED: 4.2 / 70 kmDetail info | Read user reports | You felt it? - Report it!';storedMarkers.push(['quake-22937528',35.80000,140.20000,'12 minutes ago: Mag. 4.0, Near East Coast OF Honshu, Japan',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 Tokyo, the capital of Japan with 9,700,000 inhabitants, in 47 km (29 mi) distance west 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.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry3 km (2 mi)S of epicenterInba(pop: 13,700)II: Very weakInzai-shi, ChibaJapan5 km (3 mi)NE of epicenterAjiki(pop: 20,100)II: Very weakImba-gun, ChibaJapan5 km (3 mi)NW of epicenterInzai(pop: 105,500)II: Very weakChibaJapan10 km (6 mi)S of epicenterSakura(pop: 173,700)II: Very weakChibaJapan10 km (6 mi)SW of epicenterYachiyo(pop: 199,500)II: Very weakChibaJapan11 km (7 mi)E of epicenterNarita(pop: 132,900)II: Very weakChibaJapan11 km (7 mi)SE of epicenterShisui(pop: 20,700)II: Very weakImba-gun, ChibaJapan11 km (7 mi)N of epicenterRyugasaki(pop: 85,800)II: Very weakRyugasaki Shi, IbarakiJapan12 km (7 mi)W of epicenterShiroi(pop: 62,400)II: Very weakChibaJapan15 km (10 mi)NW of epicenterToride(pop: 104,500)II: Very weakIbarakiJapan17 km (11 mi)S of epicenterYotsukaido(pop: 95,300)II: Very weakYotsukaido Shi, ChibaJapan18 km (11 mi)SE of epicenterRyogoku(pop: 49,700)II: Very weakTomisato-shi, ChibaJapan18 km (11 mi)NW of epicenterAbiko(pop: 131,800)II: Very weakChibaJapan18 km (11 mi)W of epicenterKamagaya(pop: 109,900)II: Very weakChibaJapan19 km (12 mi)SW of epicenterNarashino(pop: 176,200)II: Very weakChibaJapan20 km (12 mi)N of epicenterUshiku(pop: 84,700)II: Very weakIbarakiJapan20 km (12 mi)SE of epicenterYachimata(pop: 68,800)II: Very weakChibaJapan21 km (13 mi)W of epicenterKashiwa(pop: 433,400)II: Very weakChibaJapan21 km (13 mi)SW of epicenterMakuhari(pop: 28,700)II: Very weakChiba-shi, ChibaJapan23 km (14 mi)NW of epicenterMoriya(pop: 68,800)II: Very weakIbarakiJapan23 km (15 mi)S of epicenterChiba(pop: 979,800)II: Very weakChibaJapan27 km (17 mi)W of epicenterMatsudo(pop: 498,600)II: Very weakChibaJapan27 km (17 mi)SE of epicenterSanmu(pop: 48,400)II: Very weakChibaJapan27 km (17 mi)W of epicenterNagareyama(pop: 200,100)II: Very weakChibaJapan29 km (18 mi)E of epicenterSawara(pop: 47,200)II: Very weakKatori-shi, ChibaJapan29 km (18 mi)W of epicenterMisato, Saitama(pop: 142,100)II: Very weakMisato Shi, SaitamaJapan29 km (18 mi)NE of epicenterKatori-shi(pop: 74,500)II: Very weakChibaJapan31 km (19 mi)SW of epicenterUrayasu(pop: 171,400)II: Very weakChibaJapan32 km (20 mi)SE of epicenterTogane(pop: 66,300)II: Very weakTogane Shi, ChibaJapan32 km (20 mi)N of epicenterTsuchiura(pop: 144,400)II: Very weakIbarakiJapan32 km (20 mi)N of epicenterTsukuba(pop: 241,700)II: Very weakIbarakiJapan32 km (20 mi)W of epicenterKatsushika(pop: 453,100)II: Very weakTokyoJapan33 km (20 mi)W of epicenterYashio(pop: 93,400)II: Very weakSaitamaJapan33 km (21 mi)S of epicenterIchihara(pop: 283,500)II: Very weakChibaJapan33 km (21 mi)S of epicenterOami(pop: 53,200)II: Very weakSambu-gun, ChibaJapan34 km (21 mi)NW of epicenterNoda(pop: 154,100)II: Very weakChibaJapan42 km (26 mi)E of epicenterAsahi(pop: 64,700)II: Very weakChibaJapan42 km (26 mi)S of epicenterMobara(pop: 88,300)II: Very weakChibaJapan47 km (29 mi)W of epicenterTokyo(pop: 9,733,300)II: Very weakTokyoJapan64 km (40 mi)SW of epicenterYokohama(pop: 3,777,500)II: Very weakKanagawaJapanNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quake (10)The first report about ground shaking reached us after only 2 minutes, before other agencies reported it. So far, we have received 10 reports for this quake from Japan. The quake was reported to have been felt in up to approx. 50 km (31 mi) distance, with isolated cases to have felt the quake even 50 km (31 mi) away.Most reports came from Tokyo (2 reports), the capital of Japan with 9,700,000 inhabitants in 47 km (29 mi) distance west of the epicenter, Yachiyo (1 report), a city with more than 200,000 inhabitants in Chiba in 10 km (6.2 mi) distance southwest of the epicenter, and Kawasaki (1 report) (54 km or 33 mi to the southwest) in Kanagawa. Further below is a list of places where most people reported this quake.This section is being updated as new data comes in.User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.Contribute:Leave a comment if you find a particular report interesting or want to add to it.Flag as inappropriate.Mark as helpful or interesting.Send your own user report!Translate14.7 km SW of epicenter [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : Sleeping on my spring bed, experienced shaking | One user found this interesting. Heiwadai (48.8 km W of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 1-2 s : I was sitting in my room on the third floor and i felt a substantial rattle of the floor and the room furnishing rattle | One user found this interesting. 38.7 km WSW of epicenter [Map] / Very weak shaking (MMI II) : Felt light swinging on the 10th floor. Confirmed with an earthquake in Chiba at 23:53, magnitude 4.0, as reported by Japan Metereological Agency. Tokyo (39.3 km WSW of epicenter) [Map] / Very weak shaking (MMI II) : Sitting in bed, felt it shake, heard a very subtle noise 大田区 (50.2 km WSW of epicenter) [Map] / Weak shaking (MMI III) : Strong jolt at the beginning. Light vibrations for about 30 seconds following. Shibuya Tokyo (48.9 km WSW of epicenter) [Map] / Weak shaking (MMI III)Ikebukuro (45.3 km W of epicenter) [Map] / Very weak shaking (MMI II)Hatagaya (49.7 km WSW of epicenter) [Map] / Weak shaking (MMI III)Nakaburu (49.2 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 sTokyo (42.2 km WSW of epicenter) [Map] / Light shaking (MMI IV)List of cities/places with most reportsPlaceDistance from epicenterAverage reported Shaking IntensityNr. of reportsTokyo, Tokyo, Japan(Pop.: 9,733,276)47 km (29 mi)W of epicenterIII: Weak shaking2Yachiyo, Chiba, Japan(Pop.: 199,498)10 km (6.2 mi)SW of epicenterII: Very weak shaking1Kawasaki, Kanagawa, Japan(Pop.: 1,538,262)54 km (33 mi)SW of epicenterIII: Weak shaking1Note: Only reports with latitude/longitude coordinate positions given (10 in total) could be used for statistics.What is Intensity and the Mercalli Intensity Scale?The amount of shaking that occurs on the surface due to an earthquake is called the intensity. It is commonly measured on the so-called Modified Mercalli Intensity Scale (MMI) ranging from 1 (not felt) to 10 (extreme shaking), and given in Roman numerals as I,II,...IX, X, and often displayed with color codes ranging from light blue to dark red.Earthquake intensity depends mainly on the magnitude and depth of the quake as well as the distance from the epicenter: The further away, the less shaking intensity occurs.Read more about the MMI scale!Number of reports by intensityShaking intensityNumber of reportsMin-Max distance from epicenter (*)Average distance (*)II: Very weak shaking614.7–49 km (9.1–31 mi)39 km (24 mi)III: Weak shaking349–50 km (30–31 mi)49 km (31 mi)IV: Light shaking142–42 km (26–26 mi)42 km (26 mi)Notes(*) Reports are filtered to exclude those that are likely highly inaccurate or esaggerated.Only reports with latitude/longitude coordinate positions given (10 in total) could be used for geographic statistics.Get the Android appI didn't feel itI felt this quakeIf you were near the epicenter and felt it, please share your experience and submit a short "I felt it" report! Other users would love to hear about it!If you did NOT feel the quake although you were in the area, please report it as well! Your contribution is valuable to earthquake science and seismic hazard analysis.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 GMT2026-04-23EpicenterAgency4.070 km43 mi14:53:30NEAR EAST COAST OF HONSHU, JAPANEMSC (European-Mediterranean Seismological Centre)4.270 km44 mi14:53:14NORTHERN CHIBA PREF5.3 km (3.3 mi) epicenter difference with EMSCNIED (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)Apr 23, 2026 11:53 pm (GMT +9)12 minutes ago - felt4.070 km0 km - This quake5.1 km SE of Inzai, Chiba, JapanMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 26 years and our earthquake archive back to 1900, there are about 3,200 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.03 quakes per year (or 1 quake every 31.3 years)Mag. 6 or higher: 0.28 quakes per year (or 1 quake every 3.5 years)Mag. 5 or higher: 7.5 quakes per yearMag. 4 or higher: 65 quakes per year (or 5.4 quakes per month)Mag. 3 or higher: 196 quakes per year (or 16.3 quakes per month)Mag. 2 or higher: 568 quakes per year (or 47 quakes per month)Mag. 1 or higher: 1,900 quakes per year (or 5.3 quakes per day)The area where this quake occurred has a very high level of seismic activity. It has had at least 4 quakes above magnitude 7 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 earthquakeStrongest in 3 yearsThe earthquake was the strongest to hit this part of Japan in over 3 years. Earlier, the last quake of equal or greater strength near the present epicenter had been a magnitude 6.1 earthquake on Friday, May 26, 2023, at 07:03 pm (GMT +9 local time) in 42 km (26 mi) distance to the southeast:Mag. 6.1 earthquake North Pacific Ocean - Chiba, Japan - May 26, 2023 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 7.9. It had occurred 15 years ago earlier, on Friday, Mar 11, 2011, at 03:15 pm (GMT +9 local time) in North Pacific Ocean, Japan:Mag. 7.9 earthquake North Pacific Ocean - Ibaraki, Japan - Mar 11, 2011 - 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 TimeMagDepthDistanceLocationDetailsMapApr 23, 03:41 pm (GMT +9)3.7337 km62 km (38 mi) to the S 41 km south of Chiba, Chiba, Japan I FELT ITInfoApr 19, 10:55 am (GMT +9)3.670 km80 km (50 mi) to the S 10.2 km northeast of Minamiboso, Chiba, Japan I FELT IT - 1 reportInfoApr 16, 03:23 pm (GMT +9)3.158 km63 km (39 mi) to the W 13 km northwest of Saitama, Saitama, JapanInfoApr 10, 01:32 pm (GMT +9)3.071 km83 km (52 mi) to the N Japan: Northern Ibaraki PrefInfoApr 9, 11:39 am (GMT +9)3.172 km47 km (29 mi) to the N 18 km south of Mito, Ibaraki, JapanInfoMay 26, 2023 07:03 pm (GMT +9)6.142 km42 km (26 mi) to the SENorth Pacific Ocean, 15 km east of Togane, Chiba, Japan 259 reportsInfoMar 16, 2022 11:36 pm (GMT +9)7.341 km246 km (153 mi) to the NENorth Pacific Ocean, 67 km south of Tashiro Jima Island, Miyagi, Japan 101 reportsInfoOct 7, 2021 10:41 pm (GMT +9)5.963 km36 km (22 mi) to the S 14 km south of Chiba, Chiba, Japan 326 reportsInfoFeb 13, 2021 11:07 pm (GMT +9)7.056 km248 km (154 mi) to the NENorth Pacific Ocean, 89 km southeast of Sendai, Miyagi, Japan 472 reportsInfoJul 7, 2018 08:23 pm (GMT +9)5.850 km92 km (57 mi) to the SE Near East Coast of Honshu, Japan 66 reportsInfoMar 14, 2012 09:05 pm (GMT +9)6.010 km46 km (29 mi) to the ENorth Pacific Ocean, 5.3 km southeast of Asahi, Chiba, JapanInfoApr 21, 2011 10:37 pm (GMT +9)6.243 km26 km (16 mi) to the S 6 km WNW of T?gane, JapanInfoApr 12, 2011 08:08 am (GMT +9)6.215 km54 km (34 mi) to the SE 23 km SE of T?gane, JapanInfoMar 11, 2011 03:57 pm (GMT +9)6.048 km62 km (38 mi) to the ENorth Pacific Ocean, 40 km southeast of Katori-shi, Chiba, JapanInfoMar 11, 2011 06:17 am (Universal Time)5.934 km81 km (51 mi) to the E Near East Coast of Honshu, JapanInfoMar 11, 2011 03:15 pm (GMT +9)7.943 km98 km (61 mi) to the NENorth Pacific Ocean, 60 km east of Mito, Ibaraki, JapanInfoJul 19, 2008 11:39 am (GMT +9)7.022 km265 km (165 mi) to the NENorth Pacific Ocean, 142 km southeast of Sendai, Miyagi, JapanInfoJul 23, 2005 04:34 pm (GMT +9)5.961 km39 km (24 mi) to the SW 9 km WSW of Ichihara, JapanInfoApr 11, 2005 07:22 am (GMT +9)5.943 km28 km (18 mi) to the SE 1.5 km west of Naruto, Chiba, JapanInfoOct 6, 2004 11:40 pm (GMT +9)5.864 km30 km (19 mi) to the NW 4.6 km east of Noda, Chiba, JapanInfoJun 3, 2000 05:54 pm (GMT +9)6.262 km36 km (23 mi) to the SE 8.8 km east of Togane, Chiba, JapanInfoSep 11, 1996 11:37 am (GMT +9)6.255 km73 km (46 mi) to the SE 23 km SSE of Hasaki, JapanInfoAug 6, 1991 11:49 pm (GMT +9)6.029 km77 km (48 mi) to the ENorth Pacific Ocean, 45 km southeast of Kashima-shi, Ibaraki, JapanInfoJun 1, 1990 10:22 am (GMT +9)6.367 km33 km (21 mi) to the SE 4 km southwest of Togane, Chiba, JapanInfoMar 6, 1989 11:39 pm (GMT +9)6.142 km36 km (22 mi) to the SE 7 km east of Togane, Chiba, JapanInfoDec 17, 1987 11:08 am (GMT +9)6.763 km49 km (30 mi) to the S 10.3 km southwest of Mobara, Chiba, JapanInfoOct 4, 1985 09:25 pm (GMT +9)5.985 km9.8 km (6.1 mi) to the W 8.9 km southeast of Abiko, Chiba, JapanInfoFeb 27, 1983 09:14 pm (GMT +9)5.978 km27 km (17 mi) to the W 1.9 km northeast of Nagareyama, Chiba, JapanInfoJul 23, 1982 11:23 pm (GMT +9)7.137 km142 km (88 mi) to the ENorth Pacific Ocean, 98 km east of Kashima-shi, Ibaraki, JapanInfoSep 25, 1980 02:54 am (GMT +9)6.073 km44 km (28 mi) to the SWChiba, 36 km southeast of Tokyo, Tokyo, JapanInfoSep 30, 1973 03:17 pm (GMT +9)5.962 km31 km (19 mi) to the SE 30 km east of Chiba, Chiba, JapanInfoDec 4, 1972 07:16 pm (GMT +9)7.455 km277 km (172 mi) to the SNorth Pacific Ocean, 100 km east of Hachijo Jima Island, Tokyo, JapanInfoFeb 29, 1972 06:23 pm (GMT +9)7.160 km269 km (167 mi) to the SNorth Pacific Ocean, 112 km east of Hachijo Jima Island, Tokyo, JapanInfoNov 26, 1953 02:48 am (GMT +9)7.925 km238 km (148 mi) to the SENorth Pacific Ocean, 197 km northeast of Hachijo Jima Island, Tokyo, JapanInfoNov 6, 1938 09:38 pm (Universal Time)7.625 km245 km (152 mi) to the NENorth Pacific Ocean, Fukushima, 290 km northeast of Tokyo, Tokyo, JapanInfoNov 6, 1938 08:53 am (Universal Time)7.730 km257 km (160 mi) to the NENorth Pacific Ocean, Fukushima, 160 km southeast of Sendai, Miyagi, JapanInfoNov 5, 1938 10:50 am (Universal Time)7.735 km236 km (147 mi) to the NENorth Pacific Ocean, 121 km east of Iwaki, Fukushima, JapanInfoNov 5, 1938 08:43 am (Universal Time)7.835 km212 km (132 mi) to the NENorth Pacific Ocean, 105 km east of Iwaki, Fukushima, JapanInfoMay 23, 1938 07:18 am (Universal Time)7.715 km139 km (87 mi) to the NENorth Pacific Ocean, 93 km east of Mito, Ibaraki, JapanInfoNov 10, 1930 10:35 pm (GMT +9)7.730 km128 km (79 mi) to the NE near the east coast of Honshu, JapanInfoJan 14, 1924 08:50 pm (Universal Time)7.015 km69 km (43 mi) to the W 3 km NE of Sayama, JapanInfoSep 2, 1923 09:26 am (Universal Time)6.635 km52 km (32 mi) to the S 9 km SSE of Mobara, JapanInfoSep 2, 1923 02:46 am (Universal Time)7.815 km94 km (58 mi) to the S 5.6 km east of Tateyama, Chiba, JapanInfoSep 1, 1923 07:38 am (Universal Time)6.715 km107 km (67 mi) to the SWNorth Pacific Ocean, 8.7 km southeast of Odawara, Kanagawa, JapanInfoSep 1, 1923 05:22 am (Universal Time)6.70 km109 km (68 mi) to the SW Near South Coast of Eastern HonshuInfoSep 1, 1923 03:48 am (Universal Time)7.00 km109 km (68 mi) to the SWNorth Pacific Ocean, 35 km south of Kamakura, Kanagawa, JapanInfoSep 1, 1923 03:39 am (Universal Time)6.60 km109 km (68 mi) to the SW Near South Coast of Eastern HonshuInfoSep 1, 1923 03:03 am (Universal Time)7.335 km100 km (62 mi) to the SWNorth Pacific Ocean, 39 km south of Yokohama, Kanagawa, JapanInfoSep 1, 1923 02:58 am (Universal Time)7.915 km97 km (60 mi) to the SW 14 km south of Isehara, Kanagawa, JapanInfoMap 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]