Moderate magnitude 4.3 earthquake at 7 km depth12 Aug 22:47 UTC: First to report: BMKG after 6 minutes.12 Aug 22:50: Now using data updates from EMSCI didn't feel itI felt this quakeEarthquake detailsDate & timeAug 12, 2026 22:41:13 UTC - Local time at epicenterThursday, Aug 13, 2026, at 06:41 am (Asia/Makassar GMT +8)StatusconfirmedMagnitude4.30Depth7 kmEpicenter latitude / longitude1.49°N / 118.93°EProvinsi Kalimantan Timur, IndonesiaSeismic antipode1.49°S / 61.07°WBrazilShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Weather at epicenter at time of quakeOvercast Clouds 27.6°C (82 F), humidity: 80%, wind: 6 m/s (12 kts) from SSWEstimated seismic energy released1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 tons of TNT) | equivalent to ONE quake of magnitude 4.3 | about seismic energy25 minutes agoAug 12, 2026 22:41 GMT / Aug 13, 2026 06:41 am (Makassar time)Lat / Lng: 1.49 / 118.93: Kalimantan, IndonesiaSource: EMSCOther sources: RaspberryShake: 4.3 / 7 km, BMKG: 4.3 / 7 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23267163',1.49000,118.93000,'25 minutes ago: Mag. 4.3, Kalimantan, 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 Bontang, a city with more than 190,000 inhabitants in Indonesia, in 221 km (137 mi) distance southwest 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(*)RegionCountry221 km (137 mi)SW of epicenterBontang(pop: 190,000)II: Very weakProvinsi Kalimantan TimurIndonesia230 km (143 mi)NW of epicenterTanjung Selor(pop: 56,600)II: Very weakKabupaten Bulungan, North KalimantanIndonesia251 km (156 mi)NW of epicenterTarakan(pop: 250,000)II: Very weakNorth KalimantanIndonesia287 km (178 mi)S of epicenterPalu(pop: 373,200)I: Not feltSulawesi TengahIndonesia297 km (184 mi)SW of epicenterSamarinda(pop: 831,500)I: Not feltProvinsi Kalimantan TimurIndonesia298 km (185 mi)SW of epicenterMuarajawa(pop: 13,200)I: Not feltProvinsi Kalimantan TimurIndonesia308 km (191 mi)SW of epicenterLoa Janan(pop: 212,800)I: Not feltKabupaten Kutai Kartanegara, Provinsi Kalimantan TimurIndonesia324 km (201 mi)N of epicenterKampong Indarasabak(pop: 1,560)I: Not feltBahagian Tawau, SabahMalaysia327 km (203 mi)NW of epicenterNunukan(pop: 67,000)I: Not feltNorth KalimantanIndonesia327 km (203 mi)N of epicenterTawau(pop: 372,600)I: Not feltSabahMalaysia338 km (210 mi)NW of epicenterWallace Bay(pop: 2,990)I: Not feltBahagian Tawau, SabahMalaysia347 km (215 mi)NW of epicenterMalinau(pop: 25,600)I: Not feltNorth KalimantanIndonesia379 km (235 mi)SW of epicenterCity of Balikpapan(pop: 700,000)I: Not feltProvinsi Kalimantan TimurIndonesia386 km (240 mi)SW of epicenterBalikpapan(pop: 695,300)I: Not feltProvinsi Kalimantan TimurIndonesiaNotes:(*) 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 GMT2026-08-12EpicenterAgency4.37 km4.3 mi22:41:13KALIMANTAN, INDONESIAEMSC (European-Mediterranean Seismological Centre)4.37 km4.3 mi22:41:13Borneo0 km (0 mi) epicenter difference with EMSCRaspberryShake (RaspberryShake)4.37 km4.3 mi22:41:13Borneo0 km (0 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 2 km2 (1 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 2 km (2 mi).[More info]Recorded aftershocks, latest first (0 quake)Aug 13, 2026 06:41 am (Makassar)25 minutes ago4.37 km0 km - This quakeCelebes Sea, 50 km E of Pulau Tanjungbuayabuaya Island, IndonesiaMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 56 years and our earthquake archive back to 1900, there are about 14 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 5 or higher: 0.12 quakes per year (or 1 quake every 8.5 years)Mag. 4 or higher: 1.44 quakes per yearMag. 3 or higher: 7.6 quakes per yearMag. 2 or higher: 12.7 quakes per yearThe area where this quake occurred has a moderate level of seismic activity. However, It has had at least 7 quakes above magnitude 5 since 1970, 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 3 weeks after a magnitude 4.3 earthquake had hit on Saturday, Jul 25, 2026, at 06:53 pm local time (Asia/Makassar GMT +8) in 26 km (16 mi) distance to the north:Mag. 4.3 earthquake Celebes Sea - 68 km northeast of Pulau Tanjungbuayabuaya Island, Indonesia - Jul 25, 2026 -The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 7.4. It had occurred 8 years earlier, on Friday, Sep 28, 2018, at 06:02 pm local time (Asia/Makassar GMT +8) in Sulawesi Tengah, Indonesia:Mag. 7.4 earthquake Kabupaten Donggala - Sulawesi Tengah, Indonesia - Sep 28, 2018 -The strongest-ever (since 1900) recorded quake in this area measured magnitude 7.9. It had occurred 31 years ago earlier, on Monday, Jan 1, 1996, at 04:05 pm local time (Asia/Makassar GMT +8) in Sulawesi Tengah, Indonesia:Mag. 7.9 earthquake Makassar Strait - 61 km southwest of Pulau Simatang Island, Indonesia - Jan 1, 1996 -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 TimeMagDepthDistanceLocationDetailsMapJul 25, 06:53 pm (Makassar)4.329 km26 km (16 mi) to the NCelebes Sea, 68 km northeast of Pulau Tanjungbuayabuaya Island, Indonesia 1 reportInfoFeb 27, 02:06 pm (Makassar)4.29 km18 km (11 mi) to the SWCelebes Sea, 35 km east of Pulau Tanjungbuayabuaya Island, IndonesiaInfoDec 29, 2025 11:59 am (Makassar)5.0?10 km94 km (59 mi) to the SWKabupaten Kutai Timur, 128 km northeast of Bontang, Indonesia (unconfirmed)InfoJul 27, 2025 02:29 am (Makassar)4.010 km81 km (50 mi) to the SMakassar Strait, 72 km south of Pulau Tanjungbuayabuaya Island, IndonesiaInfoJun 16, 2025 11:08 am (Makassar)4.710 km88 km (55 mi) to the SMakassar Strait, 76 km south of Pulau Tanjungbuayabuaya Island, IndonesiaInfoSep 15, 2024 09:08 pm (Makassar)5.56.5 km53 km (33 mi) to the WKabupaten Berau, 174 km northeast of Bontang, Indonesia 3 reportsInfoSep 15, 2024 07:28 pm (Makassar)4.310 km51 km (32 mi) to the W180 km NE of Bontang, Indonesia 1 reportInfoNov 19, 2023 02:42 am (GMT +8)4.725 km96 km (59 mi) to the SEMakassar Strait, 105 km west of Pulau Simatang Island, IndonesiaInfoJan 29, 2022 01:07 pm (Makassar)4.5146 km12 km (7.2 mi) to the E Makassar Strait, Indonesia 1 reportInfoApr 6, 2020 04:44 am (Makassar)4.730 km72 km (45 mi) to the SW 230 km northeast of Samarinda, Kalimantan Timur, IndonesiaInfoFeb 4, 2020 06:53 pm (Makassar)4.421 km90 km (56 mi) to the SE 202 km north of Palu, Sulawesi Tengah, IndonesiaInfoAug 9, 2019 12:05 am (Makassar)4.610 km15 km (9.6 mi) to the E Celebes Sea (Indonesia)InfoMar 29, 2019 03:13 pm (Makassar)5.110 km48 km (30 mi) to the WCelebes Sea, 4.3 km southeast of Pulau Tanjungbuayabuaya Island, Indonesia 1 reportInfoSep 28, 2018 06:02 pm (Makassar)7.410 km217 km (135 mi) to the SEKabupaten Donggala, 76 km north of Palu, Kota Palu, Sulawesi Tengah, Indonesia 35 reportsInfoAug 30, 2017 04:05 am (Makassar)4.525 km83 km (51 mi) to the NCelebes Sea, 96 km north of Pulau Tanjungbuayabuaya Island, IndonesiaInfoJul 28, 2014 05:29 am (GMT +8)4.510 km87 km (54 mi) to the SECelebes Sea, 83 km west of Pulau Simatang Island, Sulawesi Tengah, IndonesiaInfoApr 4, 2008 09:45 pm (Makassar)4.435 km36 km (22 mi) to the NCelebes Sea, 63 km northeast of Pulau Tanjungbuayabuaya Island, IndonesiaInfoAug 31, 2004 01:22 am (Universal Time)4.4130 km92 km (57 mi) to the SMakassar Strait, 83 km south of Pulau Tanjungbuayabuaya Island, IndonesiaInfoSep 7, 2001 03:41 am (Universal Time)4.633 km87 km (54 mi) to the SWKabupaten Kutai Timur, 137 km northeast of Bontang, IndonesiaInfoSep 15, 2000 06:35 pm (Universal Time)4.833 km43 km (27 mi) to the SWKabupaten Berau, 180 km northeast of Bontang, IndonesiaInfoJun 16, 2000 09:33 am (Makassar)4.833 km65 km (40 mi) to the SWKabupaten Kutai Timur, 157 km northeast of Bontang, IndonesiaInfoJun 16, 2000 09:08 am (Makassar)5.433 km76 km (47 mi) to the SWKabupaten Kutai Timur, 146 km northeast of Bontang, IndonesiaInfoApr 9, 1999 06:46 am (Universal Time)4.733 km39 km (24 mi) to the SCelebes Sea, 59 km southeast of Pulau Tanjungbuayabuaya Island, IndonesiaInfoMar 30, 1999 01:27 pm (Universal Time)4.72 km96 km (60 mi) to the SEMakassar Strait, 119 km southeast of Pulau Tanjungbuayabuaya Island, IndonesiaInfoDec 30, 1998 05:34 am (Makassar)5.333 km13 km (8.2 mi) to the WCelebes Sea, 37 km east of Pulau Tanjungbuayabuaya Island, IndonesiaInfoNov 6, 1998 04:56 am (Universal Time)4.833 km97 km (60 mi) to the SE Minahassa Peninsula, SulawesiInfoOct 30, 1997 04:27 pm (Universal Time)4.933 km94 km (59 mi) to the SE 206 km N of Palu, IndonesiaInfoNov 15, 1996 02:50 pm (Universal Time)4.533 km100 km (62 mi) to the SEMakassar Strait, 70 km west of Pulau Simatang Island, Sulawesi Tengah, IndonesiaInfoJul 22, 1996 10:19 pm (Makassar)7.033 km178 km (110 mi) to the EMakassar Strait, 8.8 km southeast of Pulau Simatang Island, IndonesiaInfoJan 1, 1996 04:05 pm (Makassar)7.924 km140 km (87 mi) to the SEMakassar Strait, 61 km southwest of Pulau Simatang Island, IndonesiaInfoFeb 4, 1992 02:43 pm (Makassar)4.936 km88 km (55 mi) to the WKabupaten Berau, 153 km northeast of Bontang, IndonesiaInfoJul 29, 1983 07:48 pm (GMT +8)5.377 km96 km (60 mi) to the SE Minahassa Peninsula, SulawesiInfoAug 15, 1968 06:14 am (Makassar)7.220 km177 km (110 mi) to the SEMakassar Strait, 119 km north of Palu, Kota Palu, Sulawesi Tengah, IndonesiaInfoOct 26, 1965 07:40 am (GMT +8)5.452 km98 km (61 mi) to the SEMakassar Strait, Provinsi Kalimantan Timur, 118 km west of Pulau Simatang Island, IndonesiaInfoNov 17, 1964 06:40 am (Makassar)5.735 km56 km (35 mi) to the SKabupaten Kutai Timur, 187 km northeast of Bontang, IndonesiaInfoJul 2, 1964 01:03 pm (Makassar)4.9133 km95 km (59 mi) to the SWMakassar Strait, 80 km south of Pulau Tanjungbuayabuaya Island, IndonesiaInfoMay 19, 1938 05:08 pm (Universal Time)7.735 km247 km (154 mi) to the SEMakassar Strait, 121 km northeast of Palu, Kota Palu, Sulawesi Tengah, IndonesiaInfoAug 8, 1927 06:43 pm (Universal Time)5.635 km68 km (42 mi) to the NWCelebes Sea, 40 km north of Pulau Tanjungbuayabuaya Island, IndonesiaInfoJun 24, 1907 03:36 am (Universal Time)6.335 km51 km (32 mi) to the NCelebes Sea, 77 km northeast of Pulau Tanjungbuayabuaya Island, 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 -][quakes +][smaller][bigger]