Light magnitude 3.9 earthquake at unknown depth20 Oct 03:40 UTC: First to report: EMSC after 17 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeOct 20, 2026 03:23:20 UTC - Local time at epicenterTuesday, Oct 20, 2026, at 11:23 am (GMT +8)Statusconfirmed (manually revised)Magnitude3.90DepthUnknownEpicenter latitude / longitude49.0081°N / 104.4516°EOrhon Aymag, MongoliaSeismic antipode49.0081°S / 75.548°WChileShaking intensityV Moderate shaking near epicenterFelt1 reportPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoKhanuy Gol (130 km / 81 mi)Weather at epicenter at time of quakeClear Sky -3°C (27 F), humidity: 65%, wind: 2 m/s (5 kts) from WEstimated seismic energy released4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) | equivalent to ONE quake of magnitude 3.9 | about seismic energy36 minutes ago reported feltOct 20, 2026 03:23 GMT / Oct 20, 2026 11:23 am (GMT +8)Lat / Lng: 49.0081 / 104.4516: Central MongoliaSource: EMSCDetail info | Read user reports | You felt it? - Report it!';storedMarkers.push(['quake-23450621',49.00810,104.45160,'36 minutes ago: Mag. 3.9, Central Mongolia',html,'quakes-5-24.png',18,18,9,9,124]); 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 MongoliaNearby placesThe closest larger town where the quake might have been felt is Erdenet, a town with 98,000 inhabitants in Mongolia, in 27 km (17 mi) distance west 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. In the capital of Mongolia, Ulaanbaatar, 217 km (135 mi) away from the epicenter, the earthquake could not be felt.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry7 km (4 mi)NW of epicenterJargalant(pop: 3,420)IV: LightOrhon AymagMongolia27 km (17 mi)W of epicenterErdenet(pop: 97,800)III: WeakOrhon AymagMongolia35 km (22 mi)N of epicenterSoert(pop: 4,700)III: WeakBulganMongolia108 km (67 mi)E of epicenterHongor(pop: 5,870)II: Very weakDarhan-Uul AymagMongolia119 km (74 mi)NE of epicenterDarhan(pop: 83,900)II: Very weakDarhan-Uul AymagMongolia132 km (82 mi)S of epicenterDashinchilling(pop: 2,300)II: Very weakBulganMongolia135 km (84 mi)W of epicenterHutag(pop: 4,590)II: Very weakBulganMongolia146 km (91 mi)E of epicenterSharingol(pop: 7,800)II: Very weakSelenge AymagMongolia148 km (92 mi)E of epicenterDzuunharaa(pop: 18,800)II: Very weakSelenge AymagMongolia153 km (95 mi)NE of epicenterOrhon(pop: 3,250)II: Very weakDarhan-Uul AymagMongolia159 km (99 mi)SE of epicenterArgalant(pop: 1,960)II: Very weakCentral AymagMongolia172 km (107 mi)W of epicenterSharga(pop: 3,050)I: Not feltBulganMongolia174 km (108 mi)NW of epicenterZakamensk(pop: 12,300)I: Not feltRespublika BuryatiyaRussia186 km (115 mi)NE of epicenterSuehbaatar(pop: 22,700)I: Not feltSelenge AymagMongolia186 km (116 mi)S of epicenterUlaanhudag(pop: 1,500)I: Not feltCentral AymagMongolia189 km (117 mi)N of epicenterPetropavlovka(pop: 7,580)I: Not feltRespublika BuryatiyaRussia194 km (120 mi)NE of epicenterNaushki(pop: 3,510)I: Not feltRespublika BuryatiyaRussia201 km (125 mi)N of epicenterBayangol(pop: 1,430)I: Not feltRespublika BuryatiyaRussia207 km (129 mi)NE of epicenterKyakhta(pop: 18,400)I: Not feltRespublika BuryatiyaRussia217 km (135 mi)SE of epicenterUlaanbaatar(pop: 844,800)I: Not feltUlaanbaatar HotMongolia223 km (139 mi)NE of epicenterDzhida(pop: 4,910)I: Not feltRespublika BuryatiyaRussia235 km (146 mi)SE of epicenterZuunmod(pop: 17,000)I: Not feltCentral AymagMongolia235 km (146 mi)SE of epicenterDzuunmod(pop: 17,000)I: Not feltCentral AymagMongolia235 km (146 mi)SW of epicenterHarhorin(pop: 9,000)I: Not feltÖvörhangayMongolia248 km (154 mi)NE of epicenterSelenduma(pop: 2,560)I: Not feltRespublika BuryatiyaRussia248 km (154 mi)NE of epicenterKudara-Somon(pop: 1,480)I: Not feltRespublika BuryatiyaRussia251 km (156 mi)SE of epicenterNalayh(pop: 39,600)I: Not feltUlaanbaatar HotMongolia260 km (162 mi)NE of epicenterOkino-Klyuchi(pop: 1,100)I: Not feltRespublika BuryatiyaRussia264 km (164 mi)W of epicenterTsengel(pop: 8,350)I: Not feltHoevsgoel AymagMongolia267 km (166 mi)NE of epicenterGusinoye Ozero(pop: 3,210)I: Not feltRespublika BuryatiyaRussia273 km (170 mi)N of epicenterVydrino(pop: 5,300)I: Not feltRespublika BuryatiyaRussia277 km (172 mi)N of epicenterRechka-Vydrino(pop: 5,210)I: Not feltRespublika BuryatiyaRussia280 km (174 mi)N of epicenterBaykal'sk(pop: 15,600)I: Not feltIrkutsk OblastRussia280 km (174 mi)SW of epicenterTsetserleg(pop: 21,600)I: Not feltArhangay AymagMongolia286 km (178 mi)NE of epicenterBichura(pop: 9,560)I: Not feltRespublika BuryatiyaRussia292 km (182 mi)NE of epicenterGusinoozyorsk(pop: 24,100)I: Not feltRespublika BuryatiyaRussia331 km (206 mi)NE of epicenterMukhorshibir'(pop: 5,500)I: Not feltRespublika BuryatiyaRussia344 km (214 mi)NE of epicenterTarbagatay(pop: 4,180)I: Not feltRespublika BuryatiyaRussia387 km (240 mi)NW of epicenterTurt(pop: 2,140)I: Not feltHoevsgoel AymagMongoliaNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quake (1)So far, we have received 1 report for this quake from Mongolia.It came from near Erdenet, a town with 98,000 inhabitants in Orhon Aymag in 27 km (17 mi) distance west of the epicenter, Mongolia.This section is being updated as new data comes in.User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.Translateerdenet (27.1 km W of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 sList of cities/places with most reportsPlaceDistance from epicenterAverage reported Shaking IntensityNr. of reportsErdenet, Orhon Aymag, Mongolia(Pop.: 97,814)27 km (17 mi)W of epicenterIII: Weak shaking1Note: Only reports with latitude/longitude coordinate positions given (1 in total) could be used for statistics.What is Intensity and the Mercalli Intensity Scale?The amount of shaking that occurs on the surface due to an earthquake is called the intensity. It is commonly measured on the so-called Modified Mercalli Intensity Scale (MMI) ranging from 1 (not felt) to 10 (extreme shaking), and given in Roman numerals as I,II,...IX, X, and often displayed with color codes ranging from light blue to dark red.Earthquake intensity depends mainly on the magnitude and depth of the quake as well as the distance from the epicenter: The further away, the less shaking intensity occurs.Read more about the MMI scale!Number of reports by intensityShaking intensityNumber of reportsMin-Max distance from epicenter (*)Average distance (*)III: Weak shaking127–27 km (16.8–16.8 mi)27 km (17 mi)Notes(*) Reports are filtered to exclude those that are likely highly inaccurate or esaggerated.Only reports with latitude/longitude coordinate positions given (1 in total) could be used for geographic statistics.Get the Android appI didn't feel itI felt this quakeIf you were near the epicenter and felt it, please share your experience and submit a short "I felt it" report! Other users would love to hear about it!If you did NOT feel the quake although you were in the area, please report it as well! Your contribution is valuable to earthquake science and seismic hazard analysis.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 GMT2026-10-20EpicenterAgency3.90 km0 mi03:23:20.35±0.11sCENTRAL MONGOLIAEpicenter uncertainty: ± 2 kmEMSC (European-Mediterranean Seismological Centre)Previous quakes in the same area of this earthquakeThe earthquake occurred 43 weeks after a magnitude 3.9 earthquake had hit on Wednesday, Dec 24, 2025, at 06:38 pm local time (Asia/Ulaanbaatar GMT +8) in 73 km (45 mi) distance to the west:Mag. 3.9 earthquake 3.5 km south of Bulgan - Bulgan, Mongolia - Dec 24, 2025 -The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 4.4. It had occurred 7 years earlier, on Tuesday, Mar 3, 2020, at 07:16 am local time (Universal Time GMT +0) in Bulgan, Mongolia:Mag. 4.4 earthquake Bulgan - Orhon Aymag, Mongolia - Mar 3, 2020 -The strongest-ever (since 1900) recorded quake in this area measured magnitude 7.0. It had occurred 60 years ago earlier, on Thursday, Jan 5, 1967, at 08:14 am local time (Asia/Ulaanbaatar GMT +8) in Bulgan, Mongolia:Mag. 7.0 earthquake Bulgan - Ulaanbaatar Hot, Mongolia - Jan 5, 1967 -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 TimeMagDepthDistanceLocationDetailsMapDec 24, 2025 06:38 pm (Ulaanbaatar)3.910 km73 km (45 mi) to the W 3.5 km south of Bulgan, Bulgan, Mongolia 1 reportInfoMar 3, 2020 07:16 am (Universal Time)4.410 km11 km (7 mi) to the WBulgan, 17 km east of Erdenet, Orhon Aymag, MongoliaInfoFeb 2, 2015 04:30 am (Universal Time)3.210 km100 km (62 mi) to the SW 66 km south of Bulgan, Bulgan, MongoliaInfoOct 16, 2012 11:53 pm (Ulaanbaatar)4.40 km39 km (24 mi) to the SSelenge Aymag, 56 km southeast of Erdenet, Orhon Aymag, MongoliaInfoNov 19, 2010 08:49 pm (Ulaanbaatar)4.30.7 km86 km (53 mi) to the NWBulgan, 61 km northwest of Erdenet, Orhon Aymag, MongoliaInfoJul 10, 2010 03:28 pm (Ulaanbaatar)4.310 km92 km (57 mi) to the W 30 km northwest of Bulgan, Bulgan, MongoliaInfoMar 19, 2010 04:40 pm (Ulaanbaatar)4.310 km32 km (20 mi) to the NESelenge Aymag, 50 km northeast of Erdenet, Orhon Aymag, MongoliaInfoMar 4, 2007 10:04 pm (Ulaanbaatar)4.36 km100 km (62 mi) to the S MongoliaInfoAug 30, 2005 11:06 pm (Ulaanbaatar)4.020 km54 km (34 mi) to the W Central MongoliaInfoNov 2, 2004 09:21 pm (Universal Time)2.110 km74 km (46 mi) to the NE MongoliaInfoOct 3, 2004 03:59 am (Ulaanbaatar)3.818 km28 km (18 mi) to the S 45 km SE of Erdenet, MongoliaInfoMay 11, 2004 05:56 pm (Universal Time)2.210 km100 km (62 mi) to the SW MongoliaInfoJan 31, 2004 03:49 pm (Universal Time)2.410 km39 km (24 mi) to the NW MongoliaInfoAug 19, 2003 09:35 am (Universal Time)2.110 km93 km (58 mi) to the E MongoliaInfoJul 16, 2003 01:05 pm (Universal Time)2.110 km83 km (52 mi) to the E MongoliaInfoJan 26, 2003 04:22 pm (Universal Time)2.110 km87 km (54 mi) to the S MongoliaInfoMay 18, 2000 02:40 am (Ulaanbaatar)4.233 km67 km (42 mi) to the NESelenge Aymag, 54 km west of Darhan, Darhan-Uul Aymag, MongoliaInfoMay 17, 2000 12:08 pm (Universal Time)4.510 km64 km (40 mi) to the NESelenge Aymag, 55 km southwest of Darhan, Darhan-Uul Aymag, MongoliaInfoMay 8, 2000 01:37 am (Universal Time)3.533 km80 km (50 mi) to the NW MongoliaInfoFeb 2, 1999 09:22 pm (Ulaanbaatar)3.733 km91 km (57 mi) to the NE 28 km WSW of Darhan, MongoliaInfoSep 25, 1998 01:55 am (Universal Time)4.033 km39 km (24 mi) to the N central MongoliaInfoJan 19, 1994 06:46 am (Universal Time)3.513 km83 km (52 mi) to the W 26 km northwest of Bulgan, Bulgan, MongoliaInfoJan 19, 1994 04:59 am (Universal Time)4.533 km64 km (40 mi) to the W central MongoliaInfoJan 17, 1994 12:58 am (Ulaanbaatar)4.812 km86 km (54 mi) to the W 37 km NNW of Bulgan, MongoliaInfoJan 5, 1967 10:10 am (Ulaanbaatar)4.133 km40 km (25 mi) to the E MongoliaInfoJan 5, 1967 08:14 am (Ulaanbaatar)7.013 km140 km (87 mi) to the SWBulgan, 288 km west of Ulaanbaatar, Ulaanbaatar Hot, MongoliaInfoMap 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]