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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 | User reports | Aftershocks | Earlier quakes here | Quakes in Russia | Kamchatka | Sakhalin OblastHint: Click on the image to see different maps of this quake!Moderate magnitude 4.9 earthquake at unknown depth21 Jul 03:31 UTC: First to report: GFZ after 18 minutes.21 Jul 03:32: Magnitude recalculated from 4.8 to 4.9.I didn't feel itI felt this quakeEarthquake detailsDate & timeJul 21, 2025 03:13:44 UTC - Local time at epicenterMonday, Jul 21, 2025, at 03:13 am (Universal Time GMT +0)Statuspreliminary (automatic detection)Magnitude4.9Depth10 kmEpicenter latitude / longitude53.08°N / 157.36°EUst'-Bol'sheretskiy Rayon, Kamchatka, RussiaSeismic antipode53.08°S / 22.64°WShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceGFZ (German Research Centre for Geosciences)Nearest volcanoKhalzan-Shapochka (17 km / 11 mi)Weather at epicenter at time of quakeOvercast Clouds 20.1°C (68 F), humidity: 60%, wind: 3 m/s (6 kts) from WSWEstimated seismic energy released1.4 x 1012 joules (392 megawatt hours, equivalent to 338 tons of TNT) | equivalent to ONE quake of magnitude 4.9 | about seismic energy18 minutes agoJul 21, 2025 03:13 GMT / Jul 21, 2025 03:13 am (Universal Time)Lat / Lng: 53.08 / 157.36: Kamchatka Peninsula, RussiaSource: GFZDetail info | You felt it? - Report it!';storedMarkers.push(['quake-21977734',53.08000,157.36000,'18 minutes ago: Mag. 4.9, Kamchatka Peninsula, Russia',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 Kamchatka KamchatkaNearby placesThe closest larger town where the quake might have been felt is Petropavlovsk-Kamchatskiy, a city with more than 180,000 inhabitants in Russia, in 85 km (53 mi) distance east 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.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)E of epicenterParatunka(pop: 1,770)III: WeakKamchatkaRussia69 km (43 mi)E of epicenterYelizovo(pop: 40,700)III: WeakKamchatkaRussia72 km (45 mi)E of epicenterVilyuchinsk(pop: 25,200)III: WeakKamchatkaRussia85 km (53 mi)E of epicenterPetropavlovsk-Kamchatskiy(pop: 181,200)III: WeakKamchatkaRussia186 km (115 mi)S of epicenterOzernovskiy(pop: 2,620)III: WeakKamchatkaRussia198 km (123 mi)NE of epicenterMil'kovo(pop: 8,250)II: Very weakKamchatkaRussia281 km (175 mi)S of epicenterSevero-Kuril'sk(pop: 2,420)II: Very weakSakhalin OblastRussia318 km (197 mi)NE of epicenterAtlasovo(pop: 5,000)II: Very weakKamchatkaRussia328 km (204 mi)N of epicenterEsso(pop: 1,970)II: Very weakKamchatkaRussia368 km (229 mi)NE of epicenterKozyrevsk(pop: 1,240)II: Very weakKamchatkaRussia424 km (264 mi)NE of epicenterKlyuchi(pop: 10,000)II: Very weakKamchatkaRussia480 km (299 mi)NE of epicenterUst’-Kamchatsk Staryy(pop: 4,940)II: Very weakKamchatkaRussia527 km (328 mi)N of epicenterTigil'(pop: 1,990)I: Not feltKamchatkaRussia610 km (379 mi)NE of epicenterNikol'skoye(pop: 613)I: Not feltKamchatkaRussiaNotes:(*) 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 GMT2025-07-21EpicenterAgency4.910 km6.2 mi(*)03:13:44.7Kamchatka Peninsula, RussiaGFZ (German Research Centre for Geosciences)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 8 km2 (3 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 5 km (3 mi).[More info]Recorded aftershocks, latest first (0 quake)Jul 21, 2025 03:13 am (Universal Time)18 minutes ago4.910 km0 km - This quakeUst'-Bol'sheretskiy Rayon, 85 km W of Petropavlovsk-Kamchatskiy, Kamchatka, RussiaMain Shock (this quake)MoreMap of aftershocksPrevious quakes in the same area of this earthquake18 minutes agoJul 21, 2025 03:13 GMT / Jul 21, 2025 03:13 am (Universal Time)Lat / Lng: 53.08 / 157.36: Kamchatka Peninsula, RussiaSource: GFZDetail info | You felt it? - Report it!',4.9,49, '#bb202a', 0.9,1.5, '#bb202a', 0.27);map2.addToMap('thisQuake',53.08,157.36,'18 minutes ago: Mag. 4.9, Kamchatka Peninsula, Russia','Earthquake: Mag 4.9 / 10 km (6.2 mi) depth18 minutes agoJul 21, 2025 03:13 GMT / Jul 21, 2025 03:13 am (Universal Time)Lat / Lng: 53.08 / 157.36: Kamchatka Peninsula, RussiaSource: GFZDetail info | You felt it? - Report it!','default'); // this will be local to this table obj function putQuakeOnMap(id,lat,lon,time,title,html,mag,zIndex) { qTableOlder.putQuakeOnMap(id,lat,lon,time,title,html,mag,zIndex); } map2.circleScale=0.5;qTableOlder.usePalette=1;qTableOlder.startVal=qTableOlder.referenceTime-(80*365.25*86400);qTableOlder.endVal=qTableOlder.referenceTime; qTableOlder.assignMap(map2); (async function(){await new Promise(r => setTimeout(r,4000));map2.map.setZoom(7)})(); })(); (async function(){while(typeof mkRequest=="undefined")await new Promise(r=>setTimeout(r,500));mkRequest("https://server2.allquakes.com/api/getPrevious.php?quakeId=21977734","get","",function(httpObj){let r=httpObj.responseText,d=document;if(""!=r&&200==httpObj.status){let o=JSON.parse(r);if(!o){d.getElementById("olderQuakesSection").remove();return};let table=d.getElementById("qTableOlder");table.innerHTML+=o.tableRows,qTableOlder.alternateBg(),d.getElementById("placeholder_largestQText").innerHTML=o.html,d.getElementById("sectionPreviousCWrap").style.display="",eval(o.js)}})})();]]>Sources: VolcanoDiscovery / VolcanoAdventures and other sources as noted.Use of material: Most text and images on our websites are owned by us. Re-use is generally not permitted without authorization. Contact us for licensing rights.