(Unconfirmed) Light magnitude 3.9 earthquake at 40 km depth16 Sep 01:27 UTC: First to report: RaspberryShake after 6 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeSep 16, 2025 01:21:00 UTC - Local time at epicenterTuesday, Sep 16, 2025, at 10:21 am (GMT +9)Statusunconfirmed (automatic detection)Magnitude3.9Depth40 kmEpicenter latitude / longitude35.9°N / 140.8°EKamisu-shi, Ibaraki, JapanSeismic antipode35.9°S / 39.2°WShaking intensityIII Weak shaking near epicenterFelt0 reportsPrimary data sourceRaspberryShake (RaspberryShake)Nearest volcanoTakahara (144 km / 89 mi)Weather at epicenter at time of quakeClear Sky 26.9°C (80 F), humidity: 81%, wind: 3 m/s (6 kts) from SEEstimated 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 energy15 minutes agoSep 16, 2025 01:21 GMT / Sep 16, 2025 10:21 am (GMT +9)Lat / Lng: 35.9 / 140.8: Near East Coast of Honshu, JapanSource: RaspberryShakeDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22171027',35.90000,140.80000,'15 minutes ago: Mag. 3.9, Near East Coast of Honshu, Japan',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 Chiba, a city of 1 million people in Japan, in 70 km (44 mi) distance southwest 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. In the capital of Japan, Tokyo, 103 km (64 mi) away from the epicenter, the earthquake was probably felt as very weak shaking.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry12 km (7 mi)W of epicenterKamisu(pop: 95,500)III: WeakIbarakiJapan16 km (10 mi)NW of epicenterKashima-shi(pop: 67,000)III: WeakIbarakiJapan17 km (11 mi)W of epicenterOmigawa(pop: 25,800)III: WeakKatori-shi, ChibaJapan19 km (12 mi)S of epicenterHasaki(pop: 39,200)III: WeakChoshi Shi, ChibaJapan19 km (12 mi)S of epicenterChoshi(pop: 58,400)III: WeakChoshi Shi, ChibaJapan23 km (14 mi)W of epicenterItako(pop: 27,600)III: WeakIbarakiJapan24 km (15 mi)SW of epicenterAsahi(pop: 64,700)III: WeakChibaJapan27 km (17 mi)W of epicenterSawara(pop: 47,200)III: WeakKatori-shi, ChibaJapan27 km (17 mi)W of epicenterKatori-shi(pop: 74,500)III: WeakChibaJapan30 km (19 mi)NW of epicenterNamegata(pop: 32,200)III: WeakIbarakiJapan30 km (19 mi)SW of epicenterSosa(pop: 35,700)III: WeakSosa Shi, ChibaJapan32 km (20 mi)SW of epicenterYokaichiba(pop: 32,700)III: WeakSosa Shi, ChibaJapan38 km (23 mi)NW of epicenterHokota(pop: 46,000)II: Very weakIbarakiJapan40 km (25 mi)SW of epicenterYokoshiba(pop: 22,100)II: Very weakSambu-gun, ChibaJapan43 km (27 mi)W of epicenterInashiki(pop: 47,000)II: Very weakIbarakiJapan44 km (27 mi)W of epicenterEdosaki(pop: 20,800)II: Very weakInashiki Shi, IbarakiJapan44 km (27 mi)SW of epicenterRyogoku(pop: 49,700)II: Very weakTomisato-shi, ChibaJapan45 km (28 mi)W of epicenterNarita(pop: 132,900)II: Very weakChibaJapan46 km (29 mi)SW of epicenterSanmu(pop: 48,400)II: Very weakChibaJapan50 km (31 mi)NW of epicenterOarai(pop: 15,800)II: Very weakHigashiibaraki-gun, IbarakiJapan52 km (32 mi)SW of epicenterYachimata(pop: 68,800)II: Very weakChibaJapan55 km (34 mi)NW of epicenterOmitama(pop: 48,900)II: Very weakIbarakiJapan55 km (34 mi)W of epicenterSakura(pop: 173,700)II: Very weakChibaJapan56 km (35 mi)W of epicenterRyugasaki(pop: 85,800)II: Very weakRyugasaki Shi, IbarakiJapan56 km (35 mi)W of epicenterAmi(pop: 48,600)II: Very weakInashiki-gun, IbarakiJapan57 km (36 mi)W of epicenterTsuchiura(pop: 144,400)II: Very weakIbarakiJapan57 km (36 mi)NW of epicenterKasumigaura(pop: 40,100)II: Very weakIbarakiJapan57 km (36 mi)NW of epicenterIshioka(pop: 73,100)II: Very weakIbarakiJapan58 km (36 mi)W of epicenterInzai(pop: 105,500)II: Very weakChibaJapan59 km (37 mi)NW of epicenterKatsuta(pop: 156,000)II: Very weakHitachinaka Shi, IbarakiJapan59 km (37 mi)NW of epicenterMito(pop: 270,700)II: Very weakIbarakiJapan59 km (37 mi)W of epicenterNaka(pop: 53,100)II: Very weakTsuchiura-shi, IbarakiJapan60 km (37 mi)NW of epicenterHitachi-Naka(pop: 156,600)II: Very weakHitachinaka Shi, IbarakiJapan61 km (38 mi)W of epicenterUshiku(pop: 84,700)II: Very weakIbarakiJapan64 km (40 mi)W of epicenterYachiyo(pop: 199,500)II: Very weakChibaJapan65 km (40 mi)NW of epicenterInada(pop: 53,500)II: Very weakNaka-shi, IbarakiJapan65 km (40 mi)W of epicenterToride(pop: 104,500)II: Very weakIbarakiJapan65 km (40 mi)W of epicenterTsukuba(pop: 241,700)II: Very weakIbarakiJapan70 km (44 mi)SW of epicenterChiba(pop: 979,800)II: Very weakChibaJapan103 km (64 mi)W of epicenterTokyo(pop: 8,336,600)II: Very weakTokyoJapanNotes:(*) 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!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 GMT2025-09-16EpicenterAgency3.940 km25 mi01:21:00Near East Coast of Honshu, JapanRaspberryShake (RaspberryShake)Earthquake statisticsAverage number of earthquakesBased on data from the past 25 years and our earthquake archive back to 1900, there are about 3,300 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.08 quakes per year (or 1 quake every 12.5 years)Mag. 6 or higher: 0.68 quakes per year (or 1 quake every 1.5 years)Mag. 5 or higher: 12.4 quakes per yearMag. 4 or higher: 79 quakes per year (or 6.5 quakes per month)Mag. 3 or higher: 214 quakes per year (or 17.8 quakes per month)Mag. 2 or higher: 634 quakes per year (or 53 quakes per month)Mag. 1 or higher: 2,200 quakes per year (or 5.9 quakes per day)The area where this quake occurred has a very high level of seismic activity. It has had at least 10 quakes above magnitude 7 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 7 days after a magnitude 4.4 earthquake had hit on Tuesday, Sep 9, 2025, at 08:53 am (GMT +9 local time) in 83 km (51 mi) distance to the southwest:Mag. 4.4 earthquake Chiba - Tokyo, Japan - Sep 9, 2025 - The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 7.3. It had occurred 4 years earlier, on Wednesday, Mar 16, 2022, at 11:36 pm (GMT +9 local time) in North Pacific Ocean, Japan:Mag. 7.3 earthquake North Pacific Ocean - Miyagi, Japan - Mar 16, 2022 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 9.1. It had occurred 15 years ago earlier, on Friday, Mar 11, 2011, at 02:46 pm (GMT +9 local time) in North Pacific Ocean, Japan:Mag. 9.1 earthquake North Pacific Ocean - Miyagi, 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 TimeMagDepthDistanceLocationDetailsMapSep 15, 06:41 am (GMT +9)3.070 km71 km (44 mi) to the NW 0 km north of Tsukuba, Ibaraki, Japan I FELT ITInfoSep 13, 04:47 pm (GMT +9)3.1110 km80 km (50 mi) to the WChiba, 26 km northeast of Tokyo, Tokyo, Japan I FELT ITInfoSep 12, 03:18 am (GMT +9)3.150 km71 km (44 mi) to the NW 0 km north of Tsukuba, Ibaraki, Japan I FELT IT - 1 reportInfoSep 11, 02:12 pm (GMT +9)3.370 km85 km (53 mi) to the NW 2.4 km southeast of Chikusei, Ibaraki, Japan I FELT IT - 1 reportInfoSep 10, 04:30 pm (GMT +9)3.740 km84 km (52 mi) to the W 9 km northwest of Joso, Ibaraki, Japan I FELT IT - 1 reportInfoSep 9, 08:53 am (GMT +9)4.478 km83 km (51 mi) to the SWChiba, 38 km southeast of Tokyo, Tokyo, Japan 20 reportsInfoAug 29, 04:54 am (GMT +9)4.690 km91 km (56 mi) to the NNorth Pacific Ocean, 39 km east of Hitachi, Ibaraki, Japan 8 reportsInfoAug 14, 04:13 am (GMT +9)4.960 km61 km (38 mi) to the NNorth Pacific Ocean, 36 km southeast of Hitachi, Ibaraki, Japan 76 reportsInfoAug 8, 07:29 pm (GMT +9)4.736 km95 km (59 mi) to the NENorth Pacific Ocean, 87 km east of Hitachi, Ibaraki, JapanInfoJul 30, 03:59 am (GMT +9)3.950 km71 km (44 mi) to the NW Near East Coast of Honshu, JapanInfoMay 26, 2023 07:03 pm (GMT +9)6.142 km48 km (30 mi) to the SWNorth Pacific Ocean, 15 km east of Togane, Chiba, Japan 259 reportsInfoMar 16, 2022 11:36 pm (GMT +9)7.341 km213 km (133 mi) to the N 57 km ENE of Namie, Japan 101 reportsInfoFeb 13, 2021 11:07 pm (GMT +9)7.056 km215 km (134 mi) to the NNorth Pacific Ocean, 89 km southeast of Sendai, Miyagi, Japan 472 reportsInfoSep 15, 2011 05:00 pm (GMT +9)6.128 km63 km (39 mi) to the NE 68 km E of ?arai, JapanInfoApr 21, 2011 10:37 pm (GMT +9)6.243 km57 km (36 mi) to the SW 6 km WNW of T?gane, JapanInfoApr 12, 2011 08:08 am (GMT +9)6.215 km57 km (36 mi) to the SNorth Pacific Ocean, 25 km east of Mobara, Chiba, JapanInfoApr 7, 2011 11:32 pm (GMT +9)7.142 km273 km (170 mi) to the N 30 km southeast of Ishinomaki, Miyagi, JapanInfoMar 13, 2011 10:26 am (GMT +9)6.18 km78 km (48 mi) to the E 72 km E of Hasaki, JapanInfoMar 12, 2011 12:13 am (GMT +9)6.321 km91 km (57 mi) to the ENorth Pacific Ocean, Ibaraki, 93 km east of Hasaki, Chiba, JapanInfoMar 11, 2011 05:19 pm (GMT +9)6.56.8 km75 km (46 mi) to the NENorth Pacific Ocean, 95 km southeast of Hitachi, Ibaraki, JapanInfoMar 11, 2011 05:12 pm (GMT +9)6.240 km97 km (60 mi) to the NENorth Pacific Ocean, 96 km east of Mito, Ibaraki, JapanInfoMar 11, 2011 03:15 pm (GMT +9)7.943 km51 km (32 mi) to the NE 47 km E of ?arai, JapanInfoMar 11, 2011 06:08 am (Universal Time)6.226 km95 km (59 mi) to the ENorth Pacific Ocean, 127 km east of Mito, Ibaraki, JapanInfoMar 11, 2011 02:46 pm (GMT +9)9.129 km301 km (187 mi) to the NENorth Pacific Ocean, 95 km east of Ishinomaki, Miyagi, JapanInfoJul 19, 2008 11:39 am (GMT +9)7.022 km223 km (138 mi) to the NENorth Pacific Ocean, 142 km southeast of Sendai, Miyagi, JapanInfoMay 8, 2008 01:45 am (GMT +9)6.927 km72 km (44 mi) to the NENorth Pacific Ocean, 99 km east of Mito, Ibaraki, JapanInfoMay 8, 2008 01:16 am (GMT +9)6.123 km91 km (56 mi) to the ENorth Pacific Ocean, Ibaraki, 96 km northeast of Hasaki, Chiba, JapanInfoMay 8, 2008 01:02 am (GMT +9)6.219 km74 km (46 mi) to the NENorth Pacific Ocean, 93 km southeast of Hitachi, Ibaraki, JapanInfoOct 19, 2005 08:44 pm (GMT +9)6.332 km56 km (35 mi) to the NNorth Pacific Ocean, 35 km east of Mito, Ibaraki, JapanInfoAug 16, 2005 11:46 am (GMT +9)7.236 km286 km (178 mi) to the NNorth Pacific Ocean, 66 km east of Ishinomaki, Miyagi, JapanInfoOct 31, 2003 10:06 am (GMT +9)7.010 km267 km (166 mi) to the NENorth Pacific Ocean, 162 km east of Sendai, Miyagi, JapanInfoJun 3, 2000 05:54 pm (GMT +9)6.262 km49 km (31 mi) to the SW 6 km SE of Narut?, JapanInfoSep 11, 1996 11:37 am (GMT +9)6.255 km42 km (26 mi) to the S 23 km SSE of Hasaki, JapanInfoJun 1, 1990 10:22 am (GMT +9)6.367 km59 km (37 mi) to the SW 4 km southwest of Togane, Chiba, JapanInfoMar 6, 1989 11:39 pm (GMT +9)6.142 km51 km (32 mi) to the SW 7 km east of Togane, Chiba, JapanInfoDec 17, 1987 11:08 am (GMT +9)6.763 km80 km (50 mi) to the SW 10 km SW of Mobara, JapanInfoFeb 12, 1986 11:59 am (GMT +9)6.230 km61 km (38 mi) to the NENorth Pacific Ocean, 49 km southeast of Hitachi, Ibaraki, JapanInfoJul 24, 1982 02:54 am (GMT +9)6.231 km85 km (53 mi) to the E 88 km ENE of Hasaki, JapanInfoJul 23, 1982 11:23 pm (GMT +9)7.137 km87 km (54 mi) to the NENorth Pacific Ocean, 98 km east of Kashima-shi, Ibaraki, JapanInfoJun 12, 1978 05:14 pm (GMT +9)7.744 km277 km (172 mi) to the NNorth Pacific Ocean, 68 km east of Ishinomaki, Miyagi, JapanInfoDec 4, 1972 07:16 pm (GMT +9)7.455 km282 km (175 mi) to the SNorth Pacific Ocean, 100 km east of Hachijo Jima Island, Tokyo, JapanInfoFeb 29, 1972 06:23 pm (GMT +9)7.160 km272 km (169 mi) to the SNorth Pacific Ocean, 112 km east of Hachijo Jima Island, Tokyo, JapanInfoSep 18, 1965 01:21 am (GMT +9)6.835 km65 km (40 mi) to the NENorth Pacific Ocean, 82 km east of Mito, Ibaraki, JapanInfoJan 16, 1961 09:12 pm (GMT +9)7.030 km98 km (61 mi) to the E 104 km ENE of Hasaki, JapanInfoJan 16, 1961 04:20 pm (GMT +9)7.230 km90 km (56 mi) to the ENorth Pacific Ocean, Ibaraki, 94 km northeast of Hasaki, Chiba, JapanInfoNov 26, 1953 02:48 am (GMT +9)7.925 km224 km (139 mi) to the SNorth Pacific Ocean, 197 km northeast of Hachijo Jima Island, Tokyo, JapanInfoApr 11, 1943 02:46 pm (Universal Time)7.115 km89 km (56 mi) to the NENorth Pacific Ocean, 109 km east of Mito, Ibaraki, JapanInfoNov 6, 1938 09:38 pm (Universal Time)7.625 km195 km (121 mi) to the NENorth Pacific Ocean, Fukushima, 290 km northeast of Tokyo, Tokyo, JapanInfoNov 6, 1938 08:53 am (Universal Time)7.730 km213 km (132 mi) to the NENorth Pacific Ocean, Fukushima, 160 km southeast of Sendai, Miyagi, JapanInfoNov 5, 1938 10:50 am (Universal Time)7.735 km189 km (118 mi) to the NENorth Pacific Ocean, 121 km east of Iwaki, Fukushima, JapanInfoNov 5, 1938 08:43 am (Universal Time)7.835 km164 km (102 mi) to the NE 105 km E of Iwaki, JapanInfoMay 23, 1938 07:18 am (Universal Time)7.715 km92 km (57 mi) to the NENorth Pacific Ocean, 93 km east of Mito, Ibaraki, JapanInfoNov 10, 1930 10:35 pm (GMT +9)7.730 km79 km (49 mi) to the NE near the east coast of Honshu, JapanInfoAug 14, 1924 06:02 pm (Universal Time)7.115 km59 km (37 mi) to the NENorth Pacific Ocean, 82 km east of Mito, Ibaraki, JapanInfoSep 2, 1923 02:46 am (Universal Time)7.815 km129 km (80 mi) to the SW 5 km E of Tateyama, JapanInfoSep 1, 1923 02:58 am (Universal Time)7.915 km149 km (93 mi) to the SW 5 km SSE of ?iso, JapanInfoJun 1, 1923 05:24 pm (Universal Time)7.215 km63 km (39 mi) to the E 64 km ENE of Hasaki, 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]