Moderate magnitude 4.0 earthquake at 103 km depth30 Sep 23:05 UTC: First to report: BMKG after 6 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeSep 30, 2025 22:58:41 UTC - Local time at epicenterTuesday, Sep 30, 2025, at 10:58 pm (Universal Time GMT +0)Statusconfirmed (manually revised)Magnitude4.0Depth103 kmEpicenter latitude / longitude5.35°S / 131.12°EIndonesiaSeismic antipode5.35°N / 48.88°WShaking intensityII Very weak shakingFelt0 reportsPrimary data sourceBMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Nearest volcanoManuk (94 km / 58 mi)Estimated 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 energy7 minutes agoSep 30, 2025 22:58 GMT / Sep 30, 2025 10:58 pm (Universal Time)Lat / Lng: -5.35 / 131.12: Indonesia: Banda SeaSource: BMKGDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22222540',-5.35000,131.12000,'7 minutes ago: Mag. 4.0, Indonesia: Banda 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+="¬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 near the epicenter is Tual, a town with 90,000 inhabitants in Indonesia, in 183 km (114 mi) distance to the east, but it is unlikely that the quake was felt there. DistancePlaceMax. shaking intensity(*)RegionCountry183 km (114 mi)E of epicenterTual(pop: 90,000)I: Not feltMalukuIndonesia272 km (169 mi)NE of epicenterMas(pop: 320)I: Not feltIndonesia300 km (186 mi)NE of epicenterFakfak(pop: 18,900)I: Not feltProvinsi PapuaIndonesia330 km (205 mi)NW of epicenterMasohi(pop: 36,400)I: Not feltKabupaten Maluku Tengah, MalukuIndonesia331 km (206 mi)NW of epicenterAmahai(pop: 47,700)I: Not feltKabupaten Maluku Tengah, MalukuIndonesiaNotes:(*) 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 GMT2025-09-30EpicenterAgency4.0103 km64 mi22:58:41Banda SeaBMKG (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)Sep 30, 2025 10:58 pm (Universal Time)7 minutes ago4.0103 km0 km - This quakeIndonesia: Banda SeaMain 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 40 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.02 quakes per year (or 1 quake every 41.7 years)Mag. 6 or higher: 0.16 quakes per year (or 1 quake every 6.1 years)Mag. 5 or higher: 2.5 quakes per yearMag. 4 or higher: 32 quakes per year (or 2.7 quakes per month)Mag. 3 or higher: 39.6 quakes per year (or 3.3 quakes per month)Mag. 2 or higher: 39.9 quakes per year (or 3.3 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 3 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 40 to 45 years.Number of quakes per yearPrevious quakes in the same area of this earthquake