Moderate magnitude 4.0 earthquake at 50 km depth13 Aug 14:27 UTC: First to report: BMKG after 4 minutes.13 Aug 14:28: Now using data updates from EMSCI didn't feel itI felt this quakeEarthquake detailsDate & timeAug 13, 2026 14:22:53 UTC - Local time at epicenterThursday, Aug 13, 2026, at 09:22 pm (GMT +7)StatusconfirmedMagnitude4.00Depth50 kmEpicenter latitude / longitude0.76°N / 96.76°EIndonesiaSeismic antipode0.76°S / 83.24°WEcuadorShaking intensityIII Weak shaking near epicenterFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Weather at epicenter at time of quakeLight Rain 27.6°C (82 F), humidity: 78%, wind: 5 m/s (10 kts) from SEstimated 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 energy14 minutes agoAug 13, 2026 14:22 GMT / Aug 13, 2026 09:22 pm (GMT +7)Lat / Lng: 0.76 / 96.76: Nias Region, IndonesiaSource: EMSCOther sources: RaspberryShake: 3.9 / 23 km, BMKG: 3.9 / 23 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23268724',0.76000,96.76000,'14 minutes ago: Mag. 4.0, Nias Region, Indonesia',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 BaliNearby placesThe closest larger town where the quake might have been felt is Lahewa, a town with 24,000 inhabitants in Indonesia, in 84 km (52 mi) distance northeast 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(*)RegionCountry84 km (52 mi)NE of epicenterLahewa(pop: 24,500)II: Very weakKabupaten Nias Utara, North SumatraIndonesia112 km (69 mi)NE of epicenterGunungsitoli(pop: 136,700)II: Very weakNorth SumatraIndonesia118 km (73 mi)E of epicenterTeluk Dalam(pop: 25,800)II: Very weakKabupaten Nias Selatan, North SumatraIndonesia196 km (122 mi)N of epicenterSinabang(pop: 15,000)I: Not feltKabupaten Simeulue, Nanggroe Aceh Darussalam ProvinceIndonesia205 km (127 mi)NE of epicenterSingkil(pop: 46,800)I: Not feltNanggroe Aceh Darussalam ProvinceIndonesia229 km (142 mi)NE of epicenterBarus(pop: 18,300)I: Not feltKabupaten Tapanuli Tengah, North SumatraIndonesia246 km (153 mi)NE of epicenterSubulussalam(pop: 90,800)I: Not feltNanggroe Aceh Darussalam ProvinceIndonesia250 km (155 mi)NE of epicenterSibolga(pop: 91,300)I: Not feltNorth SumatraIndonesia281 km (174 mi)NE of epicenterSidikalang(pop: 50,700)I: Not feltKabupaten Dairi, North SumatraIndonesia282 km (175 mi)NE of epicenterTarutung(pop: 39,500)I: Not feltKabupaten Tapanuli Utara, North SumatraIndonesia288 km (179 mi)E of epicenterPadangsidempuan(pop: 236,200)I: Not feltKota Padangsidimpuan, North SumatraIndonesia301 km (187 mi)NE of epicenterNainggolan(pop: 11,800)I: Not feltKabupaten Samosir, North SumatraIndonesia305 km (190 mi)NE of epicenterParopo(pop: 16,100)I: Not feltKabupaten Dairi, North SumatraIndonesia308 km (192 mi)NE of epicenterTongging(pop: 16,000)I: Not feltKabupaten Karo, North SumatraIndonesia313 km (195 mi)NE of epicenterParmonangan(pop: 13,000)I: Not feltKabupaten Toba Samosir, North SumatraIndonesia314 km (195 mi)NE of epicenterTomok Bolon(pop: 10,000)I: Not feltKabupaten Samosir, North SumatraIndonesia321 km (200 mi)NE of epicenterParapat(pop: 10,000)I: Not feltKabupaten Toba Samosir, North SumatraIndonesia324 km (201 mi)NE of epicenterKabanjahe(pop: 73,600)I: Not feltKabupaten Karo, North SumatraIndonesia333 km (207 mi)NE of epicenterBerastagi(pop: 48,200)I: Not feltKabupaten Karo, North SumatraIndonesia355 km (220 mi)NE of epicenterPematangsiantar(pop: 274,800)I: Not feltKota Pematang Siantar, North SumatraIndonesia370 km (230 mi)NE of epicenterBinjai(pop: 279,300)I: Not feltNorth SumatraIndonesia373 km (232 mi)NE of epicenterDeli Tua(pop: 27,900)I: Not feltKabupaten Deli Serdang, North SumatraIndonesia375 km (233 mi)NE of epicenterPekan Bahapal(pop: 40,000)I: Not feltKabupaten Simalungun, North SumatraIndonesia375 km (233 mi)NE of epicenterSunggal(pop: 157,900)I: Not feltKota Medan, North SumatraIndonesia379 km (235 mi)NE of epicenterMedan(pop: 2,435,300)I: Not feltNorth SumatraIndonesia391 km (243 mi)NE of epicenterTebingtinggi(pop: 117,500)I: Not feltKota Tebing Tinggi, North SumatraIndonesia395 km (246 mi)NE of epicenterPercut(pop: 311,100)I: Not feltKabupaten Deli Serdang, North SumatraIndonesia396 km (246 mi)NE of epicenterPerbaungan(pop: 157,200)I: Not feltKabupaten Serdang Bedagai, North SumatraIndonesia403 km (250 mi)NE of epicenterKisaran(pop: 141,900)I: Not feltKabupaten Asahan, North SumatraIndonesia442 km (274 mi)SE of epicenterTuapejat(pop: 5,760)I: Not feltKabupaten Kepulauan Mentawai, Provinsi Sumatera BaratIndonesiaNotes:(*) 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!Get the Android appCompare 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 GMT2026-08-13EpicenterAgency4.050 km31 mi14:22:53NIAS REGION, INDONESIAEMSC (European-Mediterranean Seismological Centre)3.923 km14 mi14:22:58Northern Sumatra, Indonesia43 km (27 mi) epicenter difference with EMSCRaspberryShake (RaspberryShake)3.923 km14 mi14:22:58Northern Sumatra, Indonesia43 km (27 mi) epicenter difference with EMSCBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)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 13, 2026 09:22 pm (GMT +7)14 minutes ago4.050 km0 km - This quakeIndian Ocean, 84 km SW of Lahewa, Kabupaten Nias Utara, North Sumatra, IndonesiaMain 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 72 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.15 quakes per year (or 1 quake every 6.7 years)Mag. 5 or higher: 5.7 quakes per yearMag. 4 or higher: 33.3 quakes per year (or 2.8 quakes per month)Mag. 3 or higher: 67 quakes per year (or 5.6 quakes per month)Mag. 2 or higher: 74 quakes per year (or 6.2 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 4 quakes above magnitude 6 since 2000, 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 earthquake