Moderate mag. 4.4 earthquake - Aegean Sea, 64 km south of Nisi Folegandros Island, Greece, on Thursday, Jun 19, 2025, at 01:53 pm (GMT +3)

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The depth of the quake could not be determined, but is assumed to be shallow.The quake was not felt (or at least not reported so).Quake Data | Interactive map | Seismograms | User reports | Aftershocks | Earlier quakes here | Quakes in Greece | South Aegean | Crete | AtticaHint: Click on the image to see different maps of this quake!Moderate magnitude 4.4 earthquake at unknown depth19 Jun 10:57 UTC: First to report: UOA after 3 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeJun 19, 2025 10:53:49 UTC - Local time at epicenterThursday, Jun 19, 2025, at 10:53 am (Universal Time GMT +0)Statuspreliminary (automatic detection)Magnitude4.4Depth10 kmEpicenter latitude / longitude36.0588°N / 24.8426°EGreeceSeismic antipode36.0588°S / 155.157°WShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceUOA (University of Athens - Seismological Laboratory)Nearest volcanoSantorini (63 km / 39 mi)Estimated seismic energy released2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 tons of TNT) | equivalent to ONE quake of magnitude 4.4 | about seismic energy4 minutes agoJun 19, 2025 10:53 GMT / Jun 19, 2025 10:53 am (Universal Time)Lat / Lng: 36.0588 / 24.8426: Greece: 66.3 km SW of ThiraSource: UOADetail info | You felt it? - Report it!';storedMarkers.push(['quake-21879974',36.05880,24.84260,'4 minutes ago: Mag. 4.4, Greece: 66.3 km SW of Thira',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+="&notFelt=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 CreteNearby placesThe closest larger town where the quake might have been felt is Chania, a town with 54,000 inhabitants in Greece, in 95 km (59 mi) distance southwest 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  Greece, Athens, 236 km (147 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(*)RegionCountry61 km (38 mi)NE of epicenterPotamos(pop: 113)III: WeakNomos Kykladon, South AegeanGreece64 km (39 mi)NE of epicenterEmporeio(pop: 1,950)III: WeakNomos Kykladon, South AegeanGreece64 km (40 mi)N of epicenterFolegandros(pop: 667)III: WeakNomos Kykladon, South AegeanGreece78 km (48 mi)S of epicenterPerama(pop: 1,660)III: WeakRethymno, CreteGreece79 km (49 mi)S of epicenterStavromenos Rethymnis(pop: 678)III: WeakRethymno, CreteGreece79 km (49 mi)S of epicenterRodia(pop: 797)III: WeakHeraklion Regional Unit, CreteGreece82 km (51 mi)NW of epicenterAdamantas(pop: 1,350)III: WeakNomos Kykladon, South AegeanGreece84 km (52 mi)SW of epicenterRethymno(pop: 32,500)III: WeakCreteGreece84 km (52 mi)NE of epicenterIos(pop: 2,020)III: WeakNomos Kykladon, South AegeanGreece84 km (52 mi)N of epicenterAlyki(pop: 17)III: WeakNomos Kykladon, South AegeanGreece85 km (53 mi)SW of epicenterMouzouras(pop: 1,460)III: WeakChania, CreteGreece85 km (53 mi)S of epicenterNea Alikarnassos(pop: 12,900)III: WeakHeraklion Regional Unit, CreteGreece91 km (56 mi)SW of epicenterKalyves(pop: 1,430)III: WeakChania, CreteGreece94 km (58 mi)SW of epicenterGeorgioupolis(pop: 2,480)III: WeakChania, CreteGreece95 km (59 mi)SW of epicenterChania(pop: 53,900)III: WeakCreteGreece101 km (63 mi)SW of epicenterKares Apokorronou(pop: 37)II: Very weakChania, CreteGreece236 km (147 mi)NW of epicenterAthens(pop: 664,000)II: Very weakNomarchia Athinas, AtticaGreeceNotes:(*) 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 GMT2025-06-19EpicenterAgency4.410 km6.2 mi(*)10:53:49.266.3 km SW of ThiraUOA (University of Athens - Seismological Laboratory)Notes:(*) A depth given as 10 km often means that the the depth of the quake could be not determined with sufficient accuracy."; HTMLcontent += ""; mainMap.addToMap("station"+id, lat, lon, title,HTMLcontent); mainMap.map.panTo([lat,lon]); document.getElementById("map_canvas").scrollIntoView();}]]>SeismogramsSeismic station: Ankara, Turkey (ANTO/IU network) | Distance from quake: 815 km / 506 mi | Show on map | Station InfoSeismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.2-4.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtoolShow moreAftershocks 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 3 km2 (1 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 3 km (2 mi).[More info]Recorded aftershocks, latest first (0 quake)Jun 19, 2025 10:53 am (Universal Time)4 minutes ago4.410 km0 km - This quakeGreece: 66.3 km SW of ThiraMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 55 years and our earthquake archive back to 1900, there are about 2,200 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.05 quakes per year (or 1 quake every 20.8 years)Mag. 5 or higher: 0.43 quakes per year (or 1 quake every 2.3 years)Mag. 4 or higher: 30.3 quakes per year (or 2.5 quakes per month)Mag. 3 or higher: 216 quakes per year (or 18 quakes per month)Mag. 2 or higher: 1,200 quakes per year (or 3.4 quakes per day)Mag. 1 or higher: 2,200 quakes per year (or 6 quakes per day)The area where this quake occurred has a high level of seismic activity. It has had at least 6 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 20 to 25 years.Number of quakes per yearPrevious quakes in the same area of this earthquake