(Unconfirmed) Moderate magnitude 4.5 earthquake at unknown depth30 Jul 17:31 UTC: First to report: RaspberryShake after 10 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeJul 30, 2025 17:21:04 UTC - Local time at epicenterWednesday, Jul 30, 2025, at 05:21 pm (Universal Time GMT +0)Statusunconfirmed (automatic detection)Magnitude4.5Depth10 kmEpicenter latitude / longitude9.317°N / 94.393°EIndiaSeismic antipode9.317°S / 85.607°WShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceRaspberryShake (RaspberryShake)Estimated seismic energy released3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 tons of TNT) | equivalent to ONE quake of magnitude 4.5 | about seismic energy10 minutes agoJul 30, 2025 17:21 GMT / Jul 30, 2025 05:21 pm (Universal Time)Lat / Lng: 9.317 / 94.393: Nicobar Islands, India RegionSource: RaspberryShakeDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22007215',9.31700,94.39300,'10 minutes ago: Mag. 4.5, Nicobar Islands, India Region',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 IndiaNearby placesThe closest larger town where the quake might have been felt is Port Blair, a city with more than 110,000 inhabitants in India, in 317 km (197 mi) distance northwest of the epicenter. People likely experienced very weak shaking there.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry317 km (197 mi)NW of epicenterPort Blair(pop: 112,100)II: Very weakSouth Andaman, Union Territory of Andaman and Nicobar IslandsIndia322 km (200 mi)NW of epicenterBamboo Flat(pop: 7,410)II: Very weakUnion Territory of Andaman and Nicobar IslandsIndiaNotes:(*) 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 GMT2025-07-30EpicenterAgency4.510 km6.2 mi(*)17:21:04Nicobar Islands, India RegionRaspberryShake (RaspberryShake)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 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)Jul 30, 2025 05:21 pm (Universal Time)10 minutes ago4.510 km0 km - This quakeNicobar Islands, India RegionMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 25 years and our earthquake archive back to 1900, there are about 44 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.09 quakes per year (or 1 quake every 11.4 years)Mag. 5 or higher: 2.3 quakes per yearMag. 4 or higher: 31.8 quakes per year (or 2.7 quakes per month)Mag. 3 or higher: 44 quakes per year (or 3.7 quakes per month)Mag. 2 or higher: 44 quakes per year (or 3.7 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 11 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 10 to 15 years.Number of quakes per yearPrevious quakes in the same area of this earthquake