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The quake had a very shallow depth of 18 km (11 mi) and was not felt (or at least not reported so).Quake Data | Interactive map | Seismograms | User reports | Aftershocks | Earlier quakes here | Quakes in Indonesia | North Sumatra | Nanggroe Aceh Darussalam ProvinceHint: Click on the image to see different maps of this quake!Moderate magnitude 4.1 earthquake at 18 km depth8 Jun 04:29 UTC: First to report: BMKG after 5 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeJun 8, 2025 04:23:52 UTC - Local time at epicenterSunday, Jun 8, 2025, at 04:23 am (Universal Time GMT +0)Statusconfirmed (manually revised)Magnitude4.1Depth18 kmEpicenter latitude / longitude1.18°N / 97.14°ENorth Nias Regency, North Sumatra, IndonesiaSeismic antipode1.18°S / 82.86°WShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Nearest volcanoHelatoba-Tarutung (221 km / 137 mi)Estimated seismic energy released8.9 x 1010 joules (24.8 megawatt hours, equivalent to 21.3 tons of TNT) | equivalent to ONE quake of magnitude 4.1 | about seismic energy6 minutes agoJun 8, 2025 04:23 GMT / Jun 8, 2025 04:23 am (Universal Time)Lat / Lng: 1.18 / 97.14: Northern Sumatra, IndonesiaSource: BMKGDetail info | You felt it? - Report it!';storedMarkers.push(['quake-21845310',1.18000,97.14000,'6 minutes ago: Mag. 4.1, Northern Sumatra, 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 Gunungsitoli, a city with more than 140,000 inhabitants in Indonesia, in 54 km (34 mi) distance east of the epicenter. People likely experienced weak shaking there. Several 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(*)RegionCountry24 km (15 mi)N of epicenterLahewa(pop: 24,500)III: WeakKabupaten Nias Utara, North SumatraIndonesia54 km (34 mi)E of epicenterGunungsitoli(pop: 136,700)III: WeakNorth SumatraIndonesia100 km (62 mi)SE of epicenterTeluk Dalam(pop: 25,800)II: Very weakKabupaten Nias Selatan, North SumatraIndonesia143 km (89 mi)NE of epicenterSingkil(pop: 46,800)II: Very weakNanggroe Aceh Darussalam ProvinceIndonesia167 km (104 mi)NW of epicenterSinabang(pop: 15,000)II: Very weakKabupaten Simeulue, Nanggroe Aceh Darussalam ProvinceIndonesia193 km (120 mi)E of epicenterSibolga(pop: 91,300)II: Very weakNorth SumatraIndonesia223 km (139 mi)NE of epicenterTarutung(pop: 39,500)I: Not feltKabupaten Tapanuli Utara, North SumatraIndonesia238 km (148 mi)E of epicenterPadangsidempuan(pop: 236,200)I: Not feltKota Padangsidimpuan, North SumatraIndonesia239 km (149 mi)NE of epicenterNainggolan(pop: 11,800)I: Not feltKabupaten Samosir, North SumatraIndonesia242 km (151 mi)NE of epicenterParopo(pop: 16,100)I: Not feltKabupaten Dairi, North SumatraIndonesia245 km (152 mi)NE of epicenterTongging(pop: 16,000)I: Not feltKabupaten Karo, North SumatraIndonesia252 km (156 mi)NE of epicenterTomok Bolon(pop: 10,000)I: Not feltKabupaten Samosir, North SumatraIndonesia252 km (157 mi)NE of epicenterParmonangan(pop: 13,000)I: Not feltKabupaten Toba Samosir, North SumatraIndonesia259 km (161 mi)NE of epicenterParapat(pop: 10,000)I: Not feltKabupaten Toba Samosir, North SumatraIndonesia261 km (162 mi)NE of epicenterKabanjahe(pop: 73,600)I: Not feltKabupaten Karo, North SumatraIndonesia271 km (168 mi)NE of epicenterBerastagi(pop: 48,200)I: Not feltKabupaten Karo, North SumatraIndonesia287 km (178 mi)N of epicenterBlangpidie(pop: 24,100)I: Not feltKabupaten Aceh Barat Daya, Nanggroe Aceh Darussalam ProvinceIndonesia292 km (181 mi)NE of epicenterPematangsiantar(pop: 274,800)I: Not feltKota Pematang Siantar, North SumatraIndonesia306 km (190 mi)E of epicenterBandar(pop: 31,400)I: Not feltKabupaten Labuhan Batu, North SumatraIndonesia308 km (191 mi)NE of epicenterBinjai(pop: 279,300)I: Not feltNorth SumatraIndonesia311 km (193 mi)NE of epicenterDeli Tua(pop: 27,900)I: Not feltKabupaten Deli Serdang, North SumatraIndonesia312 km (194 mi)NE of epicenterPekan Bahapal(pop: 40,000)I: Not feltKabupaten Simalungun, North SumatraIndonesia313 km (194 mi)NE of epicenterSunggal(pop: 157,900)I: Not feltKota Medan, North SumatraIndonesia316 km (197 mi)E of epicenterRantauprapat(pop: 103,000)I: Not feltKabupaten Labuhan Batu, North SumatraIndonesia317 km (197 mi)NE of epicenterMedan(pop: 2,435,300)I: Not feltNorth SumatraIndonesia319 km (198 mi)NE of epicenterStabat(pop: 26,900)I: Not feltKabupaten Langkat, North SumatraIndonesia328 km (204 mi)NE of epicenterTebingtinggi(pop: 117,500)I: Not feltKota Tebing Tinggi, North SumatraIndonesia333 km (207 mi)NE of epicenterPercut(pop: 311,100)I: Not feltKabupaten Deli Serdang, North SumatraIndonesia334 km (207 mi)NE of epicenterPerbaungan(pop: 157,200)I: Not feltKabupaten Serdang Bedagai, North SumatraIndonesia336 km (209 mi)NE of epicenterBelawan(pop: 102,700)I: Not feltKota Medan, North SumatraIndonesia341 km (212 mi)NE of epicenterKisaran(pop: 141,900)I: Not feltKabupaten Asahan, North SumatraIndonesia341 km (212 mi)N of epicenterPangkalan Brandan(pop: 25,500)I: Not feltKabupaten Langkat, North SumatraIndonesia343 km (213 mi)NE of epicenterLabuhan Deli(pop: 49,700)I: Not feltKota Medan, North SumatraIndonesia348 km (216 mi)NE of epicenterTanjungtiram(pop: 25,100)I: Not feltKabupaten Langkat, North SumatraIndonesia356 km (221 mi)NE of epicenterTanjungbalai(pop: 183,200)I: Not feltKota Tanjung Balai, North SumatraIndonesia360 km (224 mi)NE of epicenterTeluk Nibung(pop: 25,100)I: Not feltKota Tanjung Balai, North SumatraIndonesiaNotes:(*) 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 GMT2025-06-8EpicenterAgency4.118 km11 mi04:23:52Northern Sumatra, IndonesiaBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)"; HTMLcontent += ""; mainMap.addToMap("station"+id, lat, lon, title,HTMLcontent); mainMap.map.panTo([lat,lon]); document.getElementById("map_canvas").scrollIntoView();}]]>SeismogramsSeismic station: Parapat, Indonesia (PSI/PS network) | Distance from quake: 260 km / 162 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: 0.2-5.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtoolShow 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 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)Jun 8, 2025 04:23 am (Universal Time)6 minutes ago4.118 km0 km - This quakeNorthern Sumatra, IndonesiaMain 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 48 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.36 quakes per year (or 1 quake every 2.8 years)Mag. 5 or higher: 6.5 quakes per yearMag. 4 or higher: 22.5 quakes per yearMag. 3 or higher: 48 quakes per year (or 4 quakes per month)Mag. 2 or higher: 51 quakes per year (or 4.2 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 10 quakes above magnitude 6 since 2000, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 1 to 5 years.Number of quakes per yearPrevious quakes in the same area of this earthquake