Moderate magnitude 4.0 earthquake at 3 km depth5 Aug 18:58 UTC: First to report: NIED after 7 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeAug 5, 2025 18:50:57 UTC - Local time at epicenterWednesday, Aug 6, 2025, at 03:50 am (GMT +9)Statusconfirmed (manually revised)Magnitude4.0Depth3.4 kmEpicenter latitude / longitude28.106°N / 128.025°EJapanSeismic antipode28.106°S / 51.975°WBrazilShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceNIED (National Research Institute for Earth Science and Disaster Resilience)Nearest volcanoIo-Torishima (32 km / 20 mi)Weather at epicenter at time of quakeFew Clouds 28.8°C (84 F), humidity: 82%, wind: 10 m/s (19 kts) from SWEstimated 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 energy16 minutes agoAug 5, 2025 18:50 GMT / Aug 6, 2025 03:50 am (GMT +9)Lat / Lng: 28.106 / 128.025: Japan: NW Off Okinawajima ISSource: NIEDDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22026253',28.10600,128.02500,'16 minutes ago: Mag. 4.0, Japan: NW Off Okinawajima IS',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 Amagi, a town with 6,400 inhabitants in Japan, in 92 km (57 mi) distance east of the epicenter. People likely experienced very weak shaking there.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry92 km (57 mi)E of epicenterAmagi(pop: 6,350)II: Very weakOshima-gun, Kagoshima-kenJapan101 km (63 mi)SE of epicenterWadomari(pop: 6,930)II: Very weakOshima-gun, Kagoshima-kenJapan102 km (63 mi)SE of epicenterIsen(pop: 6,590)II: Very weakOshima-gun, Kagoshima-kenJapan120 km (75 mi)E of epicenterUken(pop: 1,840)II: Very weakOshima-gun, Kagoshima-kenJapan121 km (75 mi)S of epicenterIheya(pop: 1,210)II: Very weakOkinawaJapan133 km (82 mi)S of epicenterIzena(pop: 1,520)II: Very weakShimajiri-gun, OkinawaJapan146 km (91 mi)E of epicenterNaze(pop: 41,400)II: Very weakAmami Shi, Kagoshima-kenJapan150 km (93 mi)S of epicenterKunigami(pop: 4,910)II: Very weakOkinawaJapan157 km (97 mi)S of epicenterIe(pop: 4,190)II: Very weakKunigami-gun, OkinawaJapan159 km (99 mi)E of epicenterTatsugo(pop: 5,990)II: Very weakOshima-gun, Kagoshima-kenJapan161 km (100 mi)S of epicenterMotobu(pop: 13,400)II: Very weakKunigami-gun, OkinawaJapan165 km (102 mi)S of epicenterTaira(pop: 1,680)II: Very weakKunigami-gun, OkinawaJapan166 km (103 mi)S of epicenterNago(pop: 59,600)II: Very weakOkinawaJapan180 km (112 mi)S of epicenterOnna(pop: 10,400)II: Very weakKunigami-gun, OkinawaJapan184 km (115 mi)S of epicenterKin(pop: 11,300)I: Not feltKunigami-gun, OkinawaJapan188 km (117 mi)S of epicenterIshikawa(pop: 22,400)I: Not feltUruma Shi, OkinawaJapan192 km (119 mi)S of epicenterYomitan(pop: 40,500)I: Not feltNakagami, OkinawaJapan195 km (121 mi)S of epicenterGushikawa(pop: 65,300)I: Not feltUruma Shi, OkinawaJapan195 km (121 mi)S of epicenterKadena(pop: 13,700)I: Not feltNakagami, OkinawaJapan198 km (123 mi)S of epicenterKatsuren-haebaru(pop: 34,200)I: Not feltUruma Shi, OkinawaJapan198 km (123 mi)S of epicenterOkinawa(pop: 125,500)I: Not feltOkinawaJapan201 km (125 mi)S of epicenterChatan(pop: 27,800)I: Not feltNakagami, OkinawaJapan207 km (128 mi)S of epicenterGinowan(pop: 91,800)I: Not feltOkinawaJapan213 km (133 mi)S of epicenterYonabaru(pop: 18,400)I: Not feltShimajiri-gun, OkinawaJapan213 km (133 mi)S of epicenterNaha(pop: 317,400)I: Not feltOkinawaJapan216 km (134 mi)S of epicenterTomigusuku(pop: 55,700)I: Not feltOkinawaJapan221 km (137 mi)S of epicenterZamami(pop: 924)I: Not feltShimajiri-gun, OkinawaJapan223 km (139 mi)S of epicenterItoman(pop: 57,200)I: Not feltOkinawaJapan235 km (146 mi)SW of epicenterKumejima(pop: 7,000)I: Not feltOkinawaJapan336 km (209 mi)NE of epicenterYudomari(pop: 2,030)I: Not feltKumage-gun, Kagoshima-kenJapan345 km (214 mi)NE of epicenterNagata(pop: 1,190)I: Not feltKumage-gun, Kagoshima-kenJapan357 km (222 mi)NE of epicenterMiyanoura(pop: 6,540)I: Not feltKumage-gun, Kagoshima-kenJapan410 km (255 mi)NE of epicenterNishinoomote(pop: 17,800)I: Not feltKagoshima-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!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 GMT2025-08-5EpicenterAgency4.03.4 km2.1 mi18:50:57NW OFF OKINAWAJIMA ISNIED (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)Aug 6, 2025 03:50 am (GMT +9)16 minutes ago4.03.4 km0 km - This quakeJapan: NW Off Okinawajima ISMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 25 years and our earthquake archive back to 1900, there are about 322 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.14 quakes per year (or 1 quake every 7.1 years)Mag. 5 or higher: 1.35 quakes per yearMag. 4 or higher: 14.8 quakes per yearMag. 3 or higher: 54 quakes per year (or 4.5 quakes per month)Mag. 2 or higher: 150 quakes per year (or 12.5 quakes per month)Mag. 1 or higher: 304 quakes per year (or 25.3 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 17 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 5 to 10 years.Number of quakes per yearPrevious quakes in the same area of this earthquakeThe earthquake occurred 19 hours after a magnitude 4.6 earthquake had hit on Tuesday, Aug 5, 2025, at 08:39 am (GMT +9 local time) in 33 km (21 mi) distance to the south:Mag. 4.6 earthquake 75 km NW of China - Japan - The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 6.5. It had occurred 5 years earlier, on Sunday, Jun 14, 2020, at 12:51 am (GMT +9 local time) in Kagoshima-ken, Japan:Mag. 6.5 earthquake Ryukyu Islands - Japan - Jun 14, 2020 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 7.9. It had occurred 114 years ago earlier, on Thursday, Jun 15, 1911, at 02:25 pm local time (Universal Time GMT +0) in Kagoshima-ken, Japan:Mag. 7.9 earthquake 108 km NW of Naze - Japan - Jun 15, 1911 - 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 TimeMagDepthDistanceLocationDetailsMapAug 5, 08:39 am (GMT +9)4.610 km33 km (21 mi) to the SEast China Sea, 75 km northwest of Okinoerabujima Island, Kagoshima-ken, Japan I FELT ITInfoAug 5, 07:44 am (GMT +9)4.10 km1.9 km (1.2 mi) to the SWEast China Sea, 99 km northwest of Okinoerabujima Island, Kagoshima-ken, Japan I FELT ITInfoJan 7, 04:51 am (GMT +9)4.33.8 km3.1 km (1.9 mi) to the NEEast China Sea, 98 km northwest of Tokuno Shima Island, Kagoshima-ken, JapanInfoDec 30, 2024 06:20 pm (GMT +9)4.410 km8.4 km (5.2 mi) to the SEEast China Sea, 91 km northwest of Okinoerabujima Island, Kagoshima-ken, JapanInfoDec 30, 2024 06:20 pm (GMT +9)4.49 km16 km (9.8 mi) to the NEast China Sea, 109 km northwest of Tokuno Shima Island, Kagoshima-ken, JapanInfoJun 14, 2020 12:51 am (GMT +9)6.5159 km92 km (57 mi) to the NEast China Sea, 136 km northwest of Naze, Kagoshima-ken, Japan 133 reportsInfoAug 16, 2017 09:51 pm (GMT +9)5.6189 km77 km (48 mi) to the NEast China Sea, 286 km north of Naha, Okinawa, JapanInfoSep 26, 2016 02:19 pm (GMT +9)5.643 km93 km (58 mi) to the SEEast China Sea, 135 km southwest of Naze, Kagoshima-ken, Japan 2 reportsInfoMay 27, 2016 12:46 pm (GMT +9)5.510 km72 km (45 mi) to the SE116 km SW of Naze, JapanInfoOct 22, 2014 09:15 am (GMT +9)5.746 km82 km (51 mi) to the SEEast China Sea, 17 km northwest of Okinoerabujima Island, Kagoshima-ken, JapanInfoAug 3, 2014 01:06 pm (GMT +9)5.710 km1.4 km (0.9 mi) to the NW Ryukyu Islands, JapanInfoFeb 27, 2010 05:31 am (GMT +9)7.025 km245 km (152 mi) to the SPhilippine Sea, 81 km east of Naha, Okinawa, JapanInfoSep 29, 2009 04:22 am (GMT +9)5.89 km28 km (18 mi) to the SWEast China Sea, 99 km northwest of Okinoerabujima Island, Kagoshima-ken, JapanInfoJul 8, 2008 04:42 pm (GMT +9)6.043 km71 km (44 mi) to the SEEast China Sea, 35 km northwest of Wadomari, Kagoshima-ken, JapanInfoApr 21, 2007 04:37 am (GMT +9)5.742 km79 km (49 mi) to the SEEast China Sea, 25 km west of Okinoerabujima Island, Kagoshima-ken, JapanInfoSep 28, 2003 07:12 am (GMT +9)5.710 km88 km (55 mi) to the NEEast China Sea, 118 km northwest of Naze, Kagoshima-ken, JapanInfoOct 3, 1998 08:15 pm (GMT +9)6.2227 km60 km (37 mi) to the NWEast China Sea, 154 km northwest of Tokuno Shima Island, Kagoshima-ken, JapanInfoJun 2, 1996 06:37 pm (GMT +9)5.842 km88 km (55 mi) to the SEEast China Sea, 13 km west of Okinoerabujima Island, Kagoshima-ken, JapanInfoOct 18, 1995 07:37 pm (GMT +9)7.128 km212 km (132 mi) to the EPhilippine Sea, 84 km southeast of Naze, Kagoshima-ken, JapanInfoAug 17, 1995 05:58 am (GMT +9)5.721 km40 km (25 mi) to the N Ryukyu Islands, JapanInfoJan 15, 1995 11:40 am (GMT +9)5.647 km79 km (49 mi) to the SE Ryukyu Islands, JapanInfoJun 4, 1992 01:04 pm (GMT +9)6.017 km10.1 km (6.3 mi) to the SEast China Sea, 90 km northwest of Okinoerabujima Island, Kagoshima-ken, JapanInfoJun 3, 1992 10:55 am (GMT +9)5.656 km7.2 km (4.5 mi) to the E 139 km WSW of Naze, JapanInfoJun 16, 1990 01:53 pm (GMT +9)6.027 km13 km (8 mi) to the SEast China Sea, 93 km northwest of Okinoerabujima Island, Kagoshima-ken, JapanInfoMar 1, 1985 05:53 am (GMT +9)6.160 km83 km (52 mi) to the SEEast China Sea, 18 km northwest of Okinoerabujima Island, Kagoshima-ken, JapanInfoAug 29, 1984 04:04 am (GMT +9)5.858 km90 km (56 mi) to the SEEast China Sea, 10.1 km northwest of Okinoerabujima Island, Kagoshima-ken, JapanInfoFeb 6, 1973 02:30 pm (GMT +9)5.781 km42 km (26 mi) to the SWEast China Sea, 106 km northwest of Okinoerabujima Island, Kagoshima-ken, JapanInfoMar 19, 1969 10:59 pm (GMT +9)6.5169 km85 km (53 mi) to the NE Ryukyu Islands, JapanInfoSep 21, 1965 10:38 am (GMT +9)6.6198 km96 km (60 mi) to the NEast China Sea, 139 km northwest of Naze, Kagoshima-ken, JapanInfoFeb 28, 1959 05:56 am (GMT +9)6.050 km94 km (58 mi) to the SEKagoshima-ken, 102 km northeast of Nago, Okinawa, JapanInfoDec 21, 1958 04:20 am (GMT +9)6.135 km76 km (47 mi) to the NWEast China Sea, 169 km northwest of Tokuno Shima Island, Kagoshima-ken, JapanInfoDec 18, 1958 12:34 am (GMT +9)6.035 km78 km (49 mi) to the NWEast China Sea, 172 km northwest of Tokuno Shima Island, Kagoshima-ken, JapanInfoDec 17, 1944 07:18 am (Universal Time)6.148 km86 km (54 mi) to the SEEast China Sea, 17 km north of Okinoerabujima Island, Kagoshima-ken, JapanInfoMar 21, 1942 11:20 pm (Universal Time)7.025 km298 km (185 mi) to the NE Ryukyu Islands, JapanInfoJun 16, 1938 02:15 am (Universal Time)7.620 km151 km (94 mi) to the EPhilippine Sea, 54 km east of Tokuno Shima Island, Kagoshima-ken, JapanInfoDec 2, 1935 04:42 pm (Universal Time)6.320 km48 km (30 mi) to the NEast China Sea, 124 km northwest of Tokuno Shima Island, Kagoshima-ken, JapanInfoDec 1, 1935 11:45 pm (Universal Time)6.420 km92 km (57 mi) to the NEast China Sea, 142 km northwest of Naze, Kagoshima-ken, JapanInfoJun 3, 1933 05:09 pm (Universal Time)6.115 km61 km (38 mi) to the E 84 km W of Naze, JapanInfoNov 5, 1923 09:28 pm (Universal Time)7.235 km241 km (150 mi) to the NEEast China Sea, 102 km northeast of Naze, Kagoshima-ken, JapanInfoNov 3, 1923 04:19 pm (Universal Time)7.035 km218 km (136 mi) to the NEEast China Sea, Kagoshima-ken, 63 km south of Suwanose-jima Island, JapanInfoJul 4, 1914 05:47 pm (Universal Time)6.215 km93 km (58 mi) to the NEEast China Sea, 67 km west of Naze, Kagoshima-ken, JapanInfoJun 15, 1911 02:25 pm (Universal Time)7.9150 km138 km (86 mi) to the NEEast China Sea, 109 km northwest of Naze, Kagoshima-ken, JapanInfoAug 25, 1904 05:59 am (GMT +9)7.90 km285 km (177 mi) to the NE Japan: KyushuInfoJun 24, 1901 04:02 pm (GMT +9)7.90 km230 km (143 mi) to the SE Ryukyu IslandsInfoApr 24, 1900 11:16 pm (Universal Time)7.335 km194 km (121 mi) to the SWEast China Sea, 124 km northwest of Tokashiki Jima Island, Okinawa, 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]