(Unconfirmed) Moderate magnitude 4.0 earthquake at 40 km depth17 Aug 23:32 UTC: First to report: RaspberryShake after 6 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeAug 17, 2026 23:26:21 UTC - Local time at epicenterMonday, Aug 17, 2026, at 11:26 pm (Universal Time GMT +0)Statusunconfirmed (automatic detection)Magnitude4.0Depth39.9 kmEpicenter latitude / longitude23.27°N / 121.56°ETaiwanSeismic antipode23.27°S / 58.44°WParaguayShaking intensityIII Weak shaking near epicenterFelt0 reportsPrimary data sourceRaspberryShake (RaspberryShake)Nearest volcanoUnnamed 24.00°N/121.83°E (86 km / 53 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 energy6 minutes agoAug 17, 2026 23:26 GMT / Aug 17, 2026 11:26 pm (Universal Time)Lat / Lng: 23.27 / 121.56: TaiwanSource: RaspberryShakeDetail info | You felt it? - Report it!';storedMarkers.push(['quake-23286135',23.27000,121.56000,'6 minutes ago: Mag. 4.0, Taiwan',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 TaiwanNearby placesThe closest larger town where the quake might have been felt is Taitung, a city with more than 100,000 inhabitants in Taiwan, in 71 km (44 mi) distance southwest of the epicenter. People likely experienced very weak shaking there. Several smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking. In the capital of Taiwan, Taipei, 198 km (123 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(*)RegionCountry39 km (24 mi)SW of epicenterChishang(pop: 7,980)III: WeakTaitung, TaiwanTaiwan48 km (30 mi)SW of epicenterGuanshan(pop: 8,160)II: Very weakTaitung, TaiwanTaiwan71 km (44 mi)SW of epicenterTaitung(pop: 103,300)II: Very weakTaiwanTaiwan79 km (49 mi)N of epicenterHualien City(pop: 99,500)II: Very weakHualien, TaiwanTaiwan95 km (59 mi)N of epicenterXiulin(pop: 17,100)II: Very weakHualien, TaiwanTaiwan98 km (61 mi)NW of epicenterLugu(pop: 17,700)II: Very weakNantou, TaiwanTaiwan98 km (61 mi)NW of epicenterPuli(pop: 86,400)II: Very weakNantou, TaiwanTaiwan105 km (65 mi)NW of epicenterZhushan(pop: 44,100)II: Very weakNantou, TaiwanTaiwan115 km (71 mi)NW of epicenterDouliu(pop: 107,900)II: Very weakYunlin, TaiwanTaiwan116 km (72 mi)W of epicenterChiayi City(pop: 263,200)II: Very weakChiayi, TaiwanTaiwan116 km (72 mi)NW of epicenterNantou(pop: 105,700)II: Very weakTaiwanTaiwan118 km (73 mi)NW of epicenterZhongxing New Village(pop: 25,500)II: Very weakNantou, TaiwanTaiwan119 km (74 mi)NW of epicenterCaotun(pop: 96,800)II: Very weakNantou, TaiwanTaiwan119 km (74 mi)NW of epicenterTianzhong(pop: 34,900)II: Very weakChanghua, TaiwanTaiwan121 km (75 mi)NW of epicenterCitong(pop: 25,000)II: Very weakYunlin, TaiwanTaiwan121 km (75 mi)NW of epicenterShetou(pop: 36,600)II: Very weakChanghua, TaiwanTaiwan125 km (77 mi)NW of epicenterWufeng(pop: 65,600)II: Very weakTaichung City, TaiwanTaiwan125 km (78 mi)NW of epicenterBeidou(pop: 33,300)II: Very weakChanghua, TaiwanTaiwan126 km (78 mi)NW of epicenterYuanlin(pop: 124,700)II: Very weakChanghua, TaiwanTaiwan126 km (78 mi)NW of epicenterYongjing(pop: 35,400)II: Very weakChanghua, TaiwanTaiwan126 km (79 mi)NW of epicenterXiluo(pop: 37,200)II: Very weakYunlin, TaiwanTaiwan127 km (79 mi)W of epicenterTaibao(pop: 38,700)II: Very weakChiyayi County, TaiwanTaiwan128 km (79 mi)W of epicenterXinying(pop: 75,000)II: Very weakTainan, TaiwanTaiwan128 km (80 mi)W of epicenterXingang(pop: 30,500)II: Very weakChiyayi County, TaiwanTaiwan132 km (82 mi)SW of epicenterChaozhou(pop: 53,300)II: Very weakPingtung, TaiwanTaiwan132 km (82 mi)NW of epicenterTaichung(pop: 2,850,300)II: Very weakTaiwanTaiwan133 km (82 mi)W of epicenterBeigang(pop: 33,300)II: Very weakYunlin, TaiwanTaiwan134 km (83 mi)NW of epicenterXihu(pop: 54,000)II: Very weakChanghua, TaiwanTaiwan135 km (84 mi)NW of epicenterChang-hua(pop: 226,600)II: Very weakChanghua, TaiwanTaiwan136 km (84 mi)NW of epicenterChanghua(pop: 226,600)II: Very weakTaiwanTaiwan136 km (85 mi)W of epicenterYongkang(pop: 233,700)II: Very weakTainan, TaiwanTaiwan140 km (87 mi)NW of epicenterErlin(pop: 43,700)II: Very weakChanghua, TaiwanTaiwan141 km (88 mi)W of epicenterTainan(pop: 1,856,600)II: Very weakTaiwanTaiwan142 km (88 mi)SW of epicenterFengshan(pop: 356,500)II: Very weakKaohsiung, KaohsiungTaiwan145 km (90 mi)SW of epicenterDonggang(pop: 47,700)II: Very weakPingtung, TaiwanTaiwan145 km (90 mi)NW of epicenterBuzi(pop: 40,500)II: Very weakTaichung City, TaiwanTaiwan147 km (91 mi)SW of epicenterKaohsiung(pop: 2,737,700)II: Very weakKaohsiungTaiwan162 km (101 mi)NW of epicenterMiaoli(pop: 86,300)II: Very weakTaiwanTaiwan171 km (106 mi)NW of epicenterToufen Township(pop: 106,300)II: Very weakMiaoli, TaiwanTaiwan198 km (123 mi)N of epicenterTaipei(pop: 7,871,900)I: Not feltTaiwanTaiwanNotes:(*) 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 GMT2026-08-17EpicenterAgency4.040 km25 mi23:26:21TaiwanRaspberryShake (RaspberryShake)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 17, 2026 11:26 pm (Universal Time)6 minutes ago4.040 km0 km - This quakeTaiwanMain 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 230 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.12 quakes per year (or 1 quake every 8.5 years)Mag. 6 or higher: 1 quakes per year (or 1 quake every 1 years)Mag. 5 or higher: 8.3 quakes per yearMag. 4 or higher: 114 quakes per year (or 9.5 quakes per month)Mag. 3 or higher: 189 quakes per year (or 15.8 quakes per month)Mag. 2 or higher: 223 quakes per year (or 18.6 quakes per month)Mag. 1 or higher: 3,200 quakes per year (or 8.8 quakes per day)The area where this quake occurred has a very high level of seismic activity. It has had at least 15 quakes above magnitude 7 since 1900, 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