Moderate mag. 4.2 earthquake - Savu Sea, 85 km north of Savu Island, East Nusa Tenggara, Indonesia, on Thursday, Jul 17, 2025, at 08:50 pm (GMT +8)

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Moderate magnitude 4.2 earthquake at unknown depth17 Jul 12:55 UTC: First to report: BMKG after 5 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeJul 17, 2025 12:50:33 UTC - Local time at epicenterThursday, Jul 17, 2025, at 08:50 pm (GMT +8)Statusconfirmed (manually revised)Magnitude4.2Depth10 kmEpicenter latitude / longitude9.8°S / 122.1°EIndonesiaSeismic antipode9.8°N / 57.9°WGuyanaShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Nearest volcanoIya (113 km / 70 mi)Weather at epicenter at time of quakeOvercast Clouds 25.9°C (79 F), humidity: 69%, wind: 5 m/s (9 kts) from SSEEstimated seismic energy released1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) | equivalent to ONE quake of magnitude 4.2 | about seismic energy17 minutes agoJul 17, 2025 12:50 GMT / Jul 17, 2025 08:50 pm (GMT +8)Lat / Lng: -9.8 / 122.1: Indonesia: Savu SeaSource: BMKGOther sources: EMSC: 4.2 / 10 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-21966983',-9.80000,122.10000,'17 minutes ago: Mag. 4.2, Indonesia: Savu Sea',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+="&notFelt=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 BaliNearby placesThe closest larger town where the quake might have been felt is Ende, a town with 87,000 inhabitants in Indonesia, in 117 km (73 mi) distance northwest 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(*)RegionCountry117 km (73 mi)NW of epicenterEnde(pop: 87,300)II: Very weakEast Nusa TenggaraIndonesia132 km (82 mi)N of epicenterMaumere(pop: 87,700)II: Very weakKabupaten Sikka, East Nusa TenggaraIndonesia146 km (91 mi)SE of epicenterBaa(pop: 1,260)II: Very weakKabupaten Rote Ndao, East Nusa TenggaraIndonesia170 km (106 mi)E of epicenterKupang(pop: 442,800)II: Very weakEast Nusa TenggaraIndonesia184 km (115 mi)E of epicenterNaisano Dua(pop: 2,350)II: Very weakKabupaten Kupang, East Nusa TenggaraIndonesia202 km (125 mi)W of epicenterWaingapu(pop: 35,900)II: Very weakKabupaten Sumba Timur, East Nusa TenggaraIndonesia223 km (139 mi)NW of epicenterRuteng(pop: 41,500)II: Very weakKabupaten Manggarai, East Nusa TenggaraIndonesia239 km (149 mi)E of epicenterSoe(pop: 40,200)I: Not feltKabupaten Timor Tengah Selatan, East Nusa TenggaraIndonesia259 km (161 mi)E of epicenterPante Makasar(pop: 4,730)I: Not feltOecusseEast Timor264 km (164 mi)E of epicenterKefamenanu(pop: 48,200)I: Not feltKabupaten Timor Tengah Utara, East Nusa TenggaraIndonesia264 km (164 mi)NW of epicenterKondas(pop: 500)I: Not feltKabupaten Manggarai, East Nusa TenggaraIndonesia283 km (176 mi)NW of epicenterLabuan Bajo(pop: 188,700)I: Not feltKabupaten Manggarai Barat, East Nusa TenggaraIndonesia316 km (196 mi)E of epicenterAtambua(pop: 82,200)I: Not feltKabupaten Belu, East Nusa TenggaraIndonesia316 km (197 mi)NW of epicenterKomodo(pop: 2,000)I: Not feltKabupaten Manggarai Barat, East Nusa TenggaraIndonesia317 km (197 mi)W of epicenterTambolaka(pop: 35,800)I: Not feltKabupaten Sumba Barat Daya, East Nusa TenggaraIndonesiaNotes:(*) 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 GMT2025-07-17EpicenterAgency4.210 km6.2 mi(*)12:50:33Savu SeaBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)4.210 km6.2 mi(*)12:50:33SAVU SEA0 km (0 mi) epicenter difference with BMKGEMSC (European-Mediterranean Seismological Centre)Notes:(*) A depth given as 10 km often means that the the depth of the quake could be not determined with sufficient accuracy.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 2 km2 (1 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)Jul 17, 2025 08:50 pm (GMT +8)17 minutes ago4.210 km0 km - This quakeSavu Sea, 85 km N of Savu Island, East Nusa Tenggara, IndonesiaMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 55 years and our earthquake archive back to 1900, there are about 31.7 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.04 quakes per year (or 1 quake every 25 years)Mag. 5 or higher: 0.62 quakes per year (or 1 quake every 1.6 years)Mag. 4 or higher: 5.2 quakes per yearMag. 3 or higher: 21.6 quakes per yearMag. 2 or higher: 30.4 quakes per year (or 2.5 quakes per month)The area where this quake occurred has a high level of seismic activity. It has had at least 5 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 23 to 27 years.Number of quakes per yearPrevious quakes in the same area of this earthquakeThe earthquake occurred 27 weeks after a magnitude 4.5 earthquake had hit on Saturday, Jan 11, 2025, at 09:46 pm local time (Asia/Makassar GMT +8) in 97 km (60 mi) distance to the north:Mag. 4.5 earthquake Savu Sea - 45 km southeast of Maumere, Indonesia - Jan 11, 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 Tuesday, Dec 14, 2021, at 11:20 am (GMT +8 local time) in Banda Sea,  Indonesia:Mag. 7.3 earthquake Banda Sea - 113 km north of Maumere, Indonesia - Dec 14, 2021 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 7.8. It had occurred 33 years ago earlier, on Saturday, Dec 12, 1992, at 01:29 pm local time (Asia/Makassar GMT +8) in East Nusa Tenggara,  Indonesia:Mag. 7.8 earthquake Flores Sea - 48 km northeast of Ende, Indonesia - Dec 12, 1992 - 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 TimeMagDepthDistanceLocationDetailsMapJan 11, 09:46 pm (Makassar)4.571 km97 km (60 mi) to the NSavu Sea, 45 km southeast of Maumere, IndonesiaInfoDec 13, 2024 01:51 am (GMT +8)4.010 km36 km (22 mi) to the NWSavu Sea, 88 km south of Ende, Kabupaten Ende, East Nusa Tenggara, IndonesiaInfoNov 20, 2024 04:50 am (GMT +8)4.882 km85 km (53 mi) to the NSavu Sea, 40 km southeast of Ende, Kabupaten Ende, East Nusa Tenggara, IndonesiaInfoSep 2, 2024 10:32 pm (GMT +8)4.317 km28 km (18 mi) to the NSavu Sea, 89 km southeast of Ende, Kabupaten Ende, East Nusa Tenggara, IndonesiaInfoAug 15, 2024 06:58 pm (GMT +8)4.530 km74 km (46 mi) to the NE Savu SeaInfoMay 21, 2024 05:37 am (GMT +8)4.210 km98 km (61 mi) to the E72 km WNW of Kupang, IndonesiaInfoMar 24, 2024 11:04 am (Makassar)5.748 km12 km (7.7 mi) to the SE Savu Sea 2 reportsInfoJan 31, 2022 04:22 am (GMT +8)5.059 km50 km (31 mi) to the SESavu Sea, 143 km west of Kupang, Kota Kupang, East Nusa Tenggara, IndonesiaInfoDec 14, 2021 11:20 am (GMT +8)7.314 km245 km (152 mi) to the NBanda Sea, 113 km north of Maumere, Indonesia 13 reportsInfoOct 11, 2021 11:09 am (Makassar)4.960 km89 km (55 mi) to the NESavu Sea, 58 km southeast of Maumere, Indonesia 1 reportInfoDec 31, 2020 10:18 am (Universal Time)5.3124 km115 km (72 mi) to the Nnear Magnitude 5.3, Near of UjungpandangInfoAug 5, 2018 06:50 pm (GMT +8)5.1111 km95 km (59 mi) to the WSavu Sea, 94 km southwest of Ende, Kabupaten Ende, East Nusa Tenggara, Indonesia 3 reportsInfoFeb 5, 2018 03:55 am (GMT +8)5.1138 km84 km (52 mi) to the NE63 km SSE of Maumere, IndonesiaInfoJan 13, 2018 05:49 am (GMT +8)4.988 km89 km (55 mi) to the E81 km W of Kupang, IndonesiaInfoAug 1, 2016 04:32 pm (GMT +8)5.061 km42 km (26 mi) to the ESavu Sea, 128 km west of Kupang, Kota Kupang, East Nusa Tenggara, IndonesiaInfoNov 8, 2011 10:41 am (GMT +8)5.182 km86 km (54 mi) to the NESavu Sea, 96 km southeast of Maumere, IndonesiaInfoMay 26, 2010 03:51 pm (GMT +8)5.035 km80 km (49 mi) to the SWSavu Sea, 58 km north of Pulau Raijua Island, East Nusa Tenggara, IndonesiaInfoMay 26, 2010 03:48 pm (GMT +8)4.943 km75 km (47 mi) to the SWSavu Sea, 59 km north of Pulau Raijua Island, East Nusa Tenggara, IndonesiaInfoApr 23, 2004 09:50 am (GMT +8)6.766 km95 km (59 mi) to the NESavu Sea, 101 km south of Pulau Solor Island, East Nusa Tenggara, IndonesiaInfoOct 7, 2003 03:29 pm (Universal Time)4.933 km76 km (47 mi) to the NSavu Sea, 70 km southeast of Ende, Kabupaten Ende, East Nusa Tenggara, IndonesiaInfoMay 21, 2003 12:37 pm (Universal Time)4.933 km64 km (40 mi) to the NSavu Sea, 54 km southeast of Ende, Kabupaten Ende, East Nusa Tenggara, IndonesiaInfoNov 12, 2002 09:33 am (GMT +8)5.033 km88 km (54 mi) to the NE Savu Sea (Indonesia)InfoOct 2, 2001 09:10 am (GMT +8)5.033 km77 km (48 mi) to the NW 39 km SSE of Ende, IndonesiaInfoAug 2, 2001 04:45 pm (Makassar)5.133 km67 km (42 mi) to the NSavu Sea, 60 km southeast of Ende, Kabupaten Ende, East Nusa Tenggara, IndonesiaInfoMar 10, 2001 12:48 pm (Makassar)5.2200 km72 km (45 mi) to the S Savu SeaInfoApr 25, 2000 11:43 am (GMT +8)5.433 km84 km (52 mi) to the SE Savu Sea (Indonesia)InfoSep 5, 1993 05:39 am (GMT +8)6.233 km53 km (33 mi) to the NE Savu Sea (Indonesia)InfoDec 12, 1992 01:57 pm (GMT +8)5.333 km72 km (44 mi) to the NW Savu SeaInfoDec 12, 1992 01:29 pm (Makassar)7.828 km149 km (92 mi) to the NFlores Sea, 48 km northeast of Ende, IndonesiaInfoOct 24, 1992 05:24 am (Makassar)6.233 km62 km (39 mi) to the NE 101 km SSE of Maumere, IndonesiaInfoNov 15, 1982 12:23 am (Makassar)5.550 km73 km (45 mi) to the NE 93 km SSE of Maumere, IndonesiaInfoJul 29, 1978 02:04 am (GMT +8)5.453 km54 km (34 mi) to the SW Savu Sea (Indonesia)InfoSep 2, 1975 11:31 pm (GMT +8)5.968 km46 km (28 mi) to the SW Savu Sea (Indonesia)InfoJul 4, 1974 05:36 am (Makassar)5.233 km57 km (36 mi) to the SW 134 km S of Ende, IndonesiaInfoJan 3, 1974 06:15 am (Makassar)5.333 km48 km (30 mi) to the NSavu Sea, 70 km southeast of Ende, Kabupaten Ende, East Nusa Tenggara, IndonesiaInfoNov 5, 1972 08:05 am (GMT +8)6.135 km22 km (13 mi) to the NESavu Sea, 104 km southeast of Ende, IndonesiaInfoFeb 7, 1972 02:48 pm (GMT +8)5.349 km62 km (39 mi) to the NWSavu Sea, 73 km south of Ende, Kabupaten Ende, East Nusa Tenggara, IndonesiaInfoJun 29, 1959 03:43 am (GMT +8)6.060 km75 km (47 mi) to the NESavu Sea, 78 km southeast of Maumere, IndonesiaInfoMar 22, 1944 08:43 am (Makassar)7.50 km211 km (131 mi) to the NEKabupaten Lembata, 186 km north of Kupang, IndonesiaInfoOct 20, 1938 02:19 am (Universal Time)7.166 km113 km (70 mi) to the NESavu Sea, 70 km southeast of Maumere, IndonesiaInfoMap 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 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