Moderate magnitude 4.3 earthquake at unknown depth21 Aug 02:12 UTC: First to report: EMSC after 6 minutes.21 Aug 02:13: Magnitude recalculated from 4.2 to 4.5.21 Aug 02:19: Now using data updates from USGSI didn't feel itI felt this quakeEarthquake detailsDate & timeAug 21, 2026 02:06:18 UTC - Local time at epicenterFriday, Aug 21, 2026, at 05:06 am (Europe/Istanbul GMT +3)Statusconfirmed (manually revised)Magnitude4.30Depth10 kmEpicenter latitude / longitude41.0198°N / 33.5713°EArac Ilcesi, Kastamonu, TurkeySeismic antipode41.0198°S / 146.429°WQuality26 seismic stationsShaking intensityIV Light shaking near epicenterFelt1 reportPrimary data sourceUSGS (United States Geological Survey)Weather at epicenter at time of quakeClear Sky 10.3°C (50 F), humidity: 75%, wind: 1 m/s (2 kts) from EEstimated 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 energy29 minutes ago reported feltAug 21, 2026 02:06 GMT / Aug 21, 2026 05:06 am (Istanbul time)Lat / Lng: 41.0198 / 33.5713: 11 km NNW of Ilgaz, TurkeySource: USGSOther sources: RaspberryShake: 4.2 / 12 km, AFAD: 4.2 / 12 km, 1 more...Detail info | Read user reports | You felt it? - Report it!';storedMarkers.push(['quake-23299837',41.01980,33.57130,'29 minutes ago: Mag. 4.3, 11 km NNW of Ilgaz, Turkey',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 TurkeyNearby placesThe closest larger town where the quake might have been felt is Kastamonu, a city with more than 130,000 inhabitants in Turkey, in 43 km (27 mi) distance northeast of the epicenter. People likely experienced weak shaking there. Many smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking. In the capital of Turkey, Ankara, 137 km (85 mi) away from the epicenter, the earthquake was probably felt as very weak shaking.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry12 km (7 mi)SE of epicenterIlgaz(pop: 13,000)IV: LightCankiriTurkey21 km (13 mi)N of epicenterIhsangazi(pop: 2,960)IV: LightIhsangazi Ilcesi, KastamonuTurkey32 km (20 mi)S of epicenterKorgun(pop: 7,660)III: WeakCankiriTurkey32 km (20 mi)NW of epicenterArac(pop: 5,590)III: WeakArac Ilcesi, KastamonuTurkey32 km (20 mi)W of epicenterBayramoeren(pop: 3,050)III: WeakBayramoeren Ilcesi, CankiriTurkey33 km (20 mi)SW of epicenterKursunlu(pop: 12,000)III: WeakKursunlu Ilcesi, CankiriTurkey34 km (21 mi)SE of epicenterYaprakli(pop: 6,390)III: WeakYaprakli Ilcesi, CankiriTurkey39 km (24 mi)E of epicenterTosya(pop: 24,000)III: WeakKastamonuTurkey40 km (25 mi)SE of epicenterSarıkaya(pop: 30)III: WeakCankiriTurkey43 km (27 mi)NE of epicenterKastamonu(pop: 125,600)III: WeakCide, KastamonuTurkey47 km (29 mi)S of epicenterCankiri(pop: 90,600)III: WeakCankiriTurkey47 km (29 mi)S of epicenterKhanjarah(pop: 71,400)III: WeakTurkey47 km (29 mi)SW of epicenterAtkaracalar(pop: 5,090)III: WeakCankiriTurkey50 km (31 mi)NW of epicenterKarakaya(pop: 110)III: WeakKastamonuTurkey52 km (32 mi)N of epicenterDaday(pop: 5,200)III: WeakKastamonuTurkey53 km (33 mi)SE of epicenterAhacik(pop: 995)III: WeakBayat Ilcesi, CorumTurkey54 km (33 mi)N of epicenterKasabaörencik(pop: 77)III: WeakKastamonuTurkey55 km (34 mi)S of epicenterEldivan(pop: 6,400)III: WeakCankiriTurkey59 km (37 mi)SW of epicenterOrta(pop: 6,070)III: WeakCankiriTurkey60 km (38 mi)NE of epicenterYukaribatak(pop: 523)III: WeakKastamonu, KastamonuTurkey61 km (38 mi)W of epicenterCerkes(pop: 17,800)III: WeakCerkes Ilcesi, CankiriTurkey65 km (40 mi)S of epicenterSabanoezue(pop: 7,720)III: WeakSabanoezue, CankiriTurkey65 km (41 mi)SE of epicenterKurucay(pop: 557)III: WeakBayat Ilcesi, CorumTurkey68 km (42 mi)N of epicenterSeydiler(pop: 3,220)III: WeakKastamonuTurkey68 km (42 mi)NW of epicenterEflani(pop: 4,430)III: WeakKarabuekTurkey69 km (43 mi)N of epicenterDevrekani(pop: 6,640)III: WeakKastamonuTurkey71 km (44 mi)SE of epicenterBayat(pop: 5,610)III: WeakCorumTurkey73 km (45 mi)N of epicenterAzdavay(pop: 3,290)III: WeakKastamonuTurkey76 km (47 mi)NW of epicenterPinarbasi(pop: 2,490)III: WeakPinarbasi Ilcesi, KastamonuTurkey77 km (48 mi)S of epicenterKaradayi(pop: 528)III: WeakCankiri, CankiriTurkey77 km (48 mi)NE of epicenterTaskoeprue(pop: 17,500)III: WeakTaskoeprue Ilcesi, KastamonuTurkey82 km (51 mi)E of epicenterIskilip(pop: 19,800)III: WeakIskilip Ilcesi, CorumTurkey83 km (51 mi)SE of epicenterKizilirmak(pop: 3,260)III: WeakKizilirmak Ilcesi, CankiriTurkey84 km (52 mi)SW of epicenterSalin(pop: 504)III: WeakKizilcahamam Ilcesi, AnkaraTurkey86 km (53 mi)SW of epicenterÇatköy(pop: 122)III: WeakAnkaraTurkey98 km (61 mi)SE of epicenterUgurludag(pop: 7,400)II: Very weakUgurludag Ilcesi, CorumTurkey101 km (63 mi)NE of epicenterHanoenue(pop: 2,450)II: Very weakHanoenue Ilcesi, KastamonuTurkey103 km (64 mi)SW of epicenterPazar(pop: 235)II: Very weakKizilcahamam Ilcesi, AnkaraTurkey137 km (85 mi)SW of epicenterAnkara(pop: 3,517,200)II: Very weakAnkaraTurkeyNotes:(*) 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 Turkey.It came from near Konya, a city of 1.4 million people in 362 km (225 mi) distance south of the epicenter, Turkey.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.TranslateKonya (365.7 km SSW of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)List of cities/places with most reportsPlaceDistance from epicenterAverage reported Shaking IntensityNr. of reportsKonya, Konya, Turkey(Pop.: 1,433,861)362 km (225 mi)S of epicenterII: Very 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 (*)II: Very weak shaking1365–365 km (227–227 mi)365 km (227 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 GMT2026-08-21EpicenterAgency4.310 km6.2 mi(*)±1.9 km02:06:18.76811 km NNW of Ilgaz, TurkeyEpicenter uncertainty: ± 5.6 kmUSGS (United States Geological Survey)4.212 km7.5 mi02:06:17Türkiye7.2 km (4.5 mi) epicenter difference with USGSRaspberryShake (RaspberryShake)4.212 km7.5 mi02:06:17Ilgaz (Çankırı)7.2 km (4.5 mi) epicenter difference with USGSAFAD (Disaster and Emergency Management Authority)4.45 km3.1 mi02:06:16EKSIK-ILGAZ (CANKIRI)5.8 km (3.6 mi) epicenter difference with USGSKOERI-RETMC (Kandilli Oservatory and Earthquake Research Institute in Istanbul)Notes:(*) A depth given as 10 km often means that the the depth of the quake could be not determined with sufficient accuracy.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 21, 2026 05:06 am (Istanbul)29 minutes ago4.310 km0 km - This quakeKastamonu, 47 km N of Cankiri, Cankiri, TurkeyMain 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 205 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 62.5 years)Mag. 6 or higher: 0.07 quakes per year (or 1 quake every 14.1 years)Mag. 5 or higher: 0.09 quakes per year (or 1 quake every 11.2 years)Mag. 4 or higher: 2 quakes per yearMag. 3 or higher: 11.7 quakes per yearMag. 2 or higher: 71 quakes per year (or 5.9 quakes per month)Mag. 1 or higher: 194 quakes per year (or 16.2 quakes per month)The area where this quake occurred has a high level of seismic activity. It has had at least 2 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 60 to 65 years.Number of quakes per yearPrevious quakes in the same area of this earthquake