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The quake had a shallow depth of 46 km (29 mi) and was felt over a large region. The shallow depth of the quake caused it to be felt more strongly near the epicenter than a deeper quake of similar magnitude would.Quake Data | Interactive map | Seismograms | User reports | Aftershocks | Earlier quakes here | Quakes in Japan | Chiba | Ibaraki | TokyoHint: Click on the image to see different maps of this quake!Strong magnitude 5.3 earthquake at 46 km depth1 Oct 12:29 UTC: First to report: VolcanoDiscovery after 2 minutes.1 Oct 12:35: Now using data updates from EMSC... [show all] ...1 Oct 12:36: Hypocenter depth recalculated from 41.00 to 46.00 km (from 25 to 29 mi). Epicenter location corrected by 15 km (9.2 mi) towards W.1 Oct 12:36: Magnitude recalculated from 5.1 to 5.0.1 Oct 12:36: Epicenter location corrected by 9.7 km (6 mi) towards SSW.1 Oct 12:38: Epicenter location corrected by 7.3 km (4.5 mi) towards NW.1 Oct 12:40: Magnitude recalculated from 5.0 to 5.3. Hypocenter depth recalculated from 46.00 to 10.00 km (from 29 to 6.2 mi). Epicenter location corrected by 6.8 km (4.2 mi) towards SSE.1 Oct 12:40: Hypocenter depth recalculated from 10.00 to 46.00 km (from 6.2 to 29 mi). Epicenter location corrected by 3.2 km (2 mi) towards ENE.1 Oct 12:42: Epicenter location corrected by 4.9 km (3 mi) towards WSW.Update Thu, 1 Oct 2026, 12:36Significant 5.1 quake hits near Choshi, Chōshi Shi, Chiba, JapanA moderately shallow magnitude 5.1 earthquake was reported in the evening near Choshi, Chōshi Shi, Chiba, Japan.According to the European-Mediterranean Seismological Centre (EMSC), the quake hit on Thursday, October 1st, 2026, at 9:27 pm local time at a moderately shallow depth of 41. km. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.Weak shaking might have been felt in Hasaki (pop. 39,200) located 5 km from the epicenter, Choshi (pop. 58,400) 5 km away, Asahi (pop. 64,700) 13 km away, Sosa (pop. 35,700) 21 km away, Kamisu (pop. 95,500) 24 km away, Katori-shi (pop. 74,500) 34 km away, Narita (pop. 132,900) 44 km away, Chiba (pop. 979,800) 62 km away, Tokyo (pop. 9,733,300) 99 km away, and Yokohama (pop. 3,777,500) 107 km away.VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.Update Thu, 1 Oct 2026, 12:31Seismic-like event, possible earthquake, reported few minutes ago near Tokyo, Tokyo, JapanUnconfirmed earthquake or seismic-like event: 20 km east of Tokyo, Tokyo, Japan, 5 minutes agoWe are receiving unverified early reports of ground shaking possibly caused by seismic activity in or near Tokyo, Tokyo, Japan on 1 Oct 2026 (GMT) at approximately 12:26 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 & timeOct 1, 2026 12:27:12 UTC - Local time at epicenterThursday, Oct 1, 2026, at 09:27 pm (GMT +9)StatusconfirmedMagnitude5.30Depth46 kmEpicenter latitude / longitude35.607°N / 140.5401°ESambu-gun, Chiba, JapanSeismic antipode35.607°S / 39.46°WQuality251 seismic stationsShaking intensityIV Light shaking near epicenterFelt51 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoOshima (143 km / 89 mi)Weather at epicenter at time of quakeScattered Clouds 24.7°C (76 F), humidity: 87%, wind: 3 m/s (5 kts) from SEstimated seismic energy released5.6 x 1012 joules (1.56 gigawatt hours, equivalent to 1344 tons of TNT) | equivalent to ONE quake of magnitude 5.3 | about seismic energy19 minutes ago reported feltOct 1, 2026 12:27 GMT / Oct 1, 2026 09:27 pm (GMT +9)Lat / Lng: 35.607 / 140.5401: Near East Coast OF Honshu, JapanSource: EMSCOther sources: GFZ: 5.3 / 10 km, RaspberryShake: 5.3 / 10 km, 1 more...Detail info | Read user reports | You felt it? - Report it!';storedMarkers.push(['quake-23403458',35.60700,140.54010,'19 minutes ago: Mag. 5.3, Near East Coast OF Honshu, Japan',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 Tokyo, the capital of Japan with 9,700,000 inhabitants, in 77 km (48 mi) distance west of the epicenter. People likely experienced light 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(*)RegionCountry11 km (7 mi)W of epicenterSanmu(pop: 48,400)IV: LightChibaJapan12 km (7 mi)N of epicenterSosa(pop: 35,700)IV: LightSosa Shi, ChibaJapan16 km (10 mi)NE of epicenterAsahi(pop: 64,700)IV: LightChibaJapan17 km (10 mi)W of epicenterTogane(pop: 66,300)IV: LightTogane Shi, ChibaJapan20 km (12 mi)NW of epicenterRyogoku(pop: 49,700)IV: LightTomisato-shi, ChibaJapan20 km (12 mi)SW of epicenterOamishirasato(pop: 48,100)IV: LightOamishirasato-shi, ChibaJapan21 km (13 mi)W of epicenterYachimata(pop: 68,800)IV: LightChibaJapan23 km (14 mi)SW of epicenterOami(pop: 53,200)IV: LightSambu-gun, ChibaJapan28 km (17 mi)NW of epicenterNarita(pop: 132,900)IV: LightChibaJapan30 km (19 mi)SW of epicenterMobara(pop: 88,300)IV: LightChibaJapan30 km (19 mi)NE of epicenterHasaki(pop: 39,200)IV: LightChoshi Shi, ChibaJapan30 km (19 mi)NE of epicenterChoshi(pop: 58,400)IV: LightChoshi Shi, ChibaJapan30 km (19 mi)NW of epicenterSakura(pop: 173,700)IV: LightChibaJapan31 km (19 mi)N of epicenterSawara(pop: 47,200)IV: LightKatori-shi, ChibaJapan33 km (20 mi)N of epicenterKatori-shi(pop: 74,500)IV: LightChibaJapan34 km (21 mi)W of epicenterYotsukaido(pop: 95,300)IV: LightYotsukaido Shi, ChibaJapan34 km (21 mi)N of epicenterKamisu(pop: 95,500)IV: LightIbarakiJapan38 km (24 mi)W of epicenterChiba(pop: 979,800)IV: LightChibaJapan40 km (25 mi)W of epicenterYachiyo(pop: 199,500)IV: LightChibaJapan41 km (25 mi)N of epicenterKashima-shi(pop: 67,000)IV: LightIbarakiJapan42 km (26 mi)NW of epicenterInzai(pop: 105,500)IV: LightChibaJapan43 km (26 mi)W of epicenterIchihara(pop: 283,500)IV: LightChibaJapan43 km (27 mi)NW of epicenterInashiki(pop: 47,000)IV: LightIbarakiJapan44 km (27 mi)S of epicenterIsumi(pop: 35,500)IV: LightChibaJapan46 km (28 mi)W of epicenterNarashino(pop: 176,200)IV: LightChibaJapan46 km (28 mi)NW of epicenterRyugasaki(pop: 85,800)IV: LightRyugasaki Shi, IbarakiJapan48 km (30 mi)NW of epicenterShiroi(pop: 62,400)IV: LightChibaJapan52 km (32 mi)SW of epicenterSodegaura(pop: 64,900)IV: LightChibaJapan52 km (32 mi)W of epicenterKamagaya(pop: 109,900)IV: LightChibaJapan53 km (33 mi)NW of epicenterToride(pop: 104,500)IV: LightIbarakiJapan55 km (34 mi)NW of epicenterAbiko(pop: 131,800)IV: LightChibaJapan58 km (36 mi)W of epicenterUrayasu(pop: 171,400)IV: LightChibaJapan58 km (36 mi)NW of epicenterKashiwa(pop: 433,400)IV: LightChibaJapan60 km (38 mi)SW of epicenterKisarazu(pop: 136,200)IV: LightChibaJapan61 km (38 mi)W of epicenterMatsudo(pop: 498,600)IV: LightChibaJapan64 km (40 mi)NW of epicenterNagareyama(pop: 200,100)IV: LightChibaJapan67 km (42 mi)SW of epicenterKimitsu(pop: 83,100)IV: LightChibaJapan72 km (44 mi)NW of epicenterNoda(pop: 154,100)IV: LightChibaJapan77 km (48 mi)W of epicenterTokyo(pop: 9,733,300)IV: LightTokyoJapan83 km (51 mi)W of epicenterYokohama(pop: 3,777,500)IV: LightKanagawaJapanNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quake (51)The first report about ground shaking reached us after only 2 minutes, before other agencies reported it. So far, we have received 51 reports for this quake from Japan. The quake was reported to have been felt in up to approx. 90–500 km (56–311 mi) distance.The majority of reports came from Tokyo (28 reports), the capital of Japan with 9,700,000 inhabitants in 77 km (48 mi) distance west of the epicenter, Katsushika (3 reports), a city with more than 450,000 inhabitants in Tokyo in 64 km (40 mi) distance west of the epicenter, and Yokosuka (2 reports) (87 km or 54 mi to the southwest) in Kanagawa. See the list of places where most people reported this quake further below.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!TranslateKamata (74.3 km W of epicenter) [Map] / Light shaking (MMI IV) / complex rolling (tilting in multiple directions) / 30-60 s : Felt like a train passing right by the window. House shuddered and shook for 40 seconds. Woke daughter up who was sleeping on upper floor Minato-ku (71.7 km W of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 20-30 s : On the 10th floor of our Hotel, we felt slightly shaking of our bed. The intensity increased in the middle slightly but only for a few seconds, dropped again and was in general only very weak (propably due to the higher floor) 69.6 km W of epicenter [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 10-15 s65.7 km W of epicenter [Map] / Weak shaking (MMI III) / both vertical and horizontal swinging / 1-2 minutesArakawa City, Nishinippori (77.2 km W of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 sKoto City (77.3 km W of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 15-20 sLaid in the bed (77.2 km W of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 minutesTokyo (70.6 km W of epicenter) [Map] / Light shaking (MMI IV) / vertical swinging (up and down) / 5-10 s : On 16th floor of hotel and our bed was bouncing and curtains swaying. Shinjuku (77.4 km W of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : 7th floor aprt, short building shaking and window rattling Shinjuku (77.4 km W of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : Bed moving and my body moving in the bed Iidabashi (77.1 km W of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 15-20 sYokohama (83 km WSW of epicenter) [Map] / Weak shaking (MMI III) / 2-5 syokoyama City (91.3 km W of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s (reported through our app)Ikebukuro (76.7 km W of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / very short : Weak shaking very quick Haneda (70.5 km W of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 minutesueno (69.3 km W of epicenter) [Map] / Weak shaking (MMI III) / 20-30 s : i was in the fifth floor feeling my bed shake Tokyo Skytree (77 km W of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 sTokyo (77.2 km W of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 sMizue, Edogawa, Tokyo (59.3 km WNW of epicenter) [Map] / Light shaking (MMI IV) / 2-5 sGinza (69.5 km W of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 10-15 sNarita, Chiba (23.9 km NW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 sIkebukuro (77 km W of epicenter) [Map] / Weak shaking (MMI III) / 10-15 sAsakusabashi (68.9 km W of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 5-10 s : Was laying on bed. Felt a minimal shaking left to right. Lamp was also swinging a tiny bit apa hotel, akihabara (69 km W of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 sTokyo (70.3 km WNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 15-20 sTokyo (77.3 km W of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 20-30 sHotel (69 km W of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s : I lied on a bed and felt that I am shaking horizontally setagaya (77.2 km W of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 20-30 sUeno (492.6 km W of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 2-5 sTokyo (67.3 km W of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 20-30 sTokyo (69.5 km W of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 15-20 sShow moreShow moreList of cities/places with most reportsPlaceDistance from epicenterAverage reported Shaking IntensityNr. of reportsTokyo, Tokyo, Japan(Pop.: 9,733,276)77 km (48 mi)W of epicenterIII: Weak shaking28Katsushika, Tokyo, Japan(Pop.: 453,093)64 km (40 mi)W of epicenterIII: Weak shaking3Yokosuka, Kanagawa, Japan(Pop.: 409,478)87 km (54 mi)SW of epicenterIII: Weak shaking2Motoyoyogicho, Tokyo, Japan(Pop.: 3,802)78 km (48 mi)W of epicenterIII: Weak shaking2Mejiro, Tokyo, Japan(Pop.: 14,182)77 km (48 mi)W of epicenterIII: Weak shaking2Minato City, Tokyo, Japan(Pop.: 260,486)71 km (44 mi)W of epicenterIII: Weak shaking2Yokohama, Kanagawa, Japan(Pop.: 3,777,491)83 km (51 mi)W of epicenterIII: Weak shaking2Higashi-nihombashi, Tokyo, Japan(Pop.: 5,628)69 km (43 mi)W of epicenterIII: Weak shaking1Yachiyo, Chiba, Japan(Pop.: 199,498)40 km (25 mi)W of epicenterIV: Light shaking1Hatsudai, Tokyo, Japan(Pop.: 8,629)78 km (48 mi)W of epicenterII: Very weak shaking1Note: Only reports with latitude/longitude coordinate positions given (51 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 shaking1167–86 km (42–54 mi)76 km (47 mi)III: Weak shaking2824–492 km (14.9–306 mi)87 km (54 mi)IV: Light shaking1244–78 km (27–49 mi)72 km (44 mi)Notes(*) Reports are filtered to exclude those that are likely highly inaccurate or esaggerated.Only reports with latitude/longitude coordinate positions given (51 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 GMT2026-10-1EpicenterAgency5.346 km29 mi12:27:12.49±0.24sNEAR EAST COAST OF HONSHU, JAPANEpicenter uncertainty: ± 6.5 kmEMSC (European-Mediterranean Seismological Centre)5.310 km6.2 mi(*)12:27:07.9±0.1sNear East Coast of Honshu, Japan1.8 km (1.1 mi) epicenter difference with EMSCEpicenter uncertainty: ± 2.3 kmGFZ (German Research Centre for Geosciences)5.310 km6.2 mi(*)12:27:07Near East Coast of Honshu, Japan1.8 km (1.1 mi) epicenter difference with EMSCRaspberryShake (RaspberryShake)5.317 km10.6 mi12:27:09Near East Coast of Honshu, Japan10 km (6.2 mi) epicenter difference with EMSCBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)5.2410 km6.2 mi(*)12:27:08.56near Tokyo12 km (7.2 mi) epicenter difference with EMSCRENASS (Réseau National de Surveillance Sismique (RéNaSS))Notes:(*) A depth given as 10 km often means that the the depth of the quake could be not determined with sufficient accuracy."; HTMLcontent += ""; mainMap.addToMap("station"+id, lat, lon, title,HTMLcontent); mainMap.map.panTo([lat,lon]); document.getElementById("map_canvas").scrollIntoView();}document.addEventListener("DOMContentLoaded", function () { var section = document.getElementById("seismogramSection"); if (!section) return; var images = section.querySelectorAll("img.waitBg"); if (!images.length) return; images.forEach(function(img, index){ img.addEventListener("error", function(){ // If the first image fails, hide the whole section. if (index === 0) { // Remove TOC entry var tocLink = document.querySelector('#toc .tocLink[data-href="seismogramSection"]'); if (tocLink) {tocLink.remove()} // Remove whole section section.remove(); } // Otherwise remove only this station. var plot = img.closest(".plotContainer"); if (!plot) return; var station = plot.previousElementSibling; var caption = plot.nextElementSibling; if (station) station.remove(); plot.remove(); if (caption) caption.remove(); // Remove empty "Show more" var more = document.getElementById("moreSeismograms"); if (more && !more.querySelector(".plotContainer")) { more.remove(); var btn = document.getElementById("moreSeismograms_1"); if (btn) btn.remove(); } // Hide section if nothing remains. if (!section.querySelector(".plotContainer")) { section.style.display = "none"; } }, { once: true }); });});]]>SeismogramsSeismic station: Matsushiro, Japan (MAJO/IU network) | Distance from quake: 234 km / 146 mi | Show on map | Station InfoSeismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.1-5.0 Hz. Source: NSF SAGE Facility IRISWS timeseriesplot Web ServiceSeismic station: Erimo, Hokkaido Island, Japan (ERM/II network) | Distance from quake: 748 km / 465 mi | Show on map | Station InfoShow moreAftershocks 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 20 km2 (8 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 8 km (5 mi).[More info]Recorded aftershocks, latest first (0 quake)Oct 1, 2026 09:27 pm (GMT +9)19 minutes ago - felt5.346 km0 km - This quakeChiba, 77 km E of Tokyo, Tokyo, 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 2,800 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: 0.35 quakes per year (or 1 quake every 2.8 years)Mag. 5 or higher: 8.6 quakes per yearMag. 4 or higher: 65 quakes per year (or 5.4 quakes per month)Mag. 3 or higher: 192 quakes per year (or 16 quakes per month)Mag. 2 or higher: 564 quakes per year (or 47 quakes per month)Mag. 1 or higher: 1,900 quakes per year (or 5.2 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 earthquake