Light magnitude 3.9 earthquake at 1 km depth31 Mar 06:28 UTC: First to report: INETER after 8 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeMar 31, 2026 06:20:31 UTC - Local time at epicenterTuesday, Mar 31, 2026, at 12:20 am (GMT -6)Statuspreliminary (automatic detection)Magnitude3.9Depth1 kmEpicenter latitude / longitude8.858°N / 84.314°WCosta RicaSeismic antipode8.858°S / 95.686°EShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceINETERNearest volcanoDurika (125 km / 78 mi)Weather at epicenter at time of quakeHeavy Intensity Rain 28.4°C (83 F), humidity: 70%, wind: 2 m/s (3 kts) from WSWEstimated seismic energy released4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) | equivalent to ONE quake of magnitude 3.9 | about seismic energy9 minutes agoMar 31, 2026 06:20 GMT / Mar 31, 2026 12:20 am (GMT -6)Lat / Lng: 8.858 / -84.314: 66 km Al Sur De Puerto Quepos, Costa RicaSource: INETERDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22859107',8.85800,-84.31400,'9 minutes ago: Mag. 3.9, 66 km Al Sur De Puerto Quepos, Costa Rica',html,'quakes-5-24.png',18,18,9,9,124]); 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 Costa RicaNearby placesThe closest larger town where the quake might have been felt is San Isidro, a town with 35,000 inhabitants in Costa Rica, in 88 km (55 mi) distance northeast 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 Costa Rica, San Jose, 122 km (76 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(*)RegionCountry66 km (41 mi)N of epicenterQuepos(pop: 7,810)II: Very weakProvincia de PuntarenasCosta Rica74 km (46 mi)N of epicenterParrita(pop: 3,730)II: Very weakProvincia de PuntarenasCosta Rica87 km (54 mi)E of epicenterPuerto Cortes(pop: 3,850)II: Very weakOsa, Provincia de PuntarenasCosta Rica88 km (55 mi)NE of epicenterSan Isidro(pop: 34,900)II: Very weakPerez Zeledon, Provincia de San JoseCosta Rica89 km (55 mi)NE of epicenterDaniel Flores(pop: 10,000)II: Very weakPerez Zeledon, Provincia de San JoseCosta Rica91 km (57 mi)NW of epicenterJaco(pop: 4,090)II: Very weakGarabito, Provincia de PuntarenasCosta Rica93 km (58 mi)NE of epicenterMercedes(pop: 5,470)II: Very weakPerez Zeledon, Provincia de San JoseCosta Rica95 km (59 mi)N of epicenterSan Marcos(pop: 4,260)II: Very weakTarrazu, Provincia de San JoseCosta Rica99 km (61 mi)N of epicenterTejar(pop: 22,400)II: Very weakAcosta, Provincia de San JoseCosta Rica108 km (67 mi)N of epicenterSan Rafael Abajo(pop: 27,400)II: Very weakPuriscal, Provincia de San JoseCosta Rica114 km (71 mi)N of epicenterAserri(pop: 25,900)II: Very weakAserri, Provincia de San JoseCosta Rica116 km (72 mi)N of epicenterSan Miguel(pop: 28,800)II: Very weakDesamparados, Provincia de San JoseCosta Rica116 km (72 mi)N of epicenterSan Juan de Dios(pop: 15,500)II: Very weakDesamparados, Provincia de San JoseCosta Rica116 km (72 mi)N of epicenterSan Rafael Arriba(pop: 15,100)II: Very weakDesamparados, Provincia de San JoseCosta Rica118 km (73 mi)N of epicenterPatarra(pop: 24,000)II: Very weakDesamparados, Provincia de San JoseCosta Rica119 km (74 mi)N of epicenterSan Felipe(pop: 25,000)II: Very weakAlajuelita, Provincia de San JoseCosta Rica120 km (74 mi)NE of epicenterParaiso(pop: 39,700)II: Very weakParaiso, Provincia de CartagoCosta Rica120 km (75 mi)N of epicenterCartago(pop: 26,600)II: Very weakProvincia de CartagoCosta Rica121 km (75 mi)N of epicenterSan Rafael(pop: 25,400)II: Very weakEscazu, Provincia de San JoseCosta Rica121 km (75 mi)N of epicenterSan Diego(pop: 17,000)II: Very weakLa Union, Provincia de CartagoCosta Rica121 km (75 mi)N of epicenterCurridabat(pop: 34,600)II: Very weakProvincia de San JoseCosta Rica122 km (76 mi)N of epicenterSan Jose(pop: 335,000)II: Very weakSan Jose, Provincia de San JoseCosta Rica122 km (76 mi)N of epicenterSan Pedro(pop: 27,500)II: Very weakMontes de Oca, Provincia de San JoseCosta Rica124 km (77 mi)N of epicenterColima(pop: 15,900)II: Very weakTibas, Provincia de San JoseCosta Rica124 km (77 mi)N of epicenterCalle Blancos(pop: 20,700)II: Very weakGoicoechea, Provincia de San JoseCosta Rica124 km (77 mi)N of epicenterGuadalupe(pop: 26,000)II: Very weakGoicoechea, Provincia de San JoseCosta Rica125 km (78 mi)N of epicenterSan Juan(pop: 26,000)II: Very weakTibas, Provincia de San JoseCosta Rica126 km (78 mi)N of epicenterSan Vicente(pop: 34,400)II: Very weakMoravia, Provincia de San JoseCosta Rica126 km (78 mi)N of epicenterPurral(pop: 30,000)II: Very weakGoicoechea, Provincia de San JoseCosta Rica126 km (78 mi)N of epicenterSan Vicente(pop: 34,400)II: Very weakMoravia, Provincia de San JoseCosta Rica126 km (78 mi)N of epicenterSan Vicente de Moravia(pop: 34,400)II: Very weakMoravia, Provincia de San JoseCosta Rica128 km (79 mi)N of epicenterIpis(pop: 26,700)II: Very weakGoicoechea, Provincia de San JoseCosta Rica128 km (79 mi)N of epicenterSan Francisco(pop: 55,900)II: Very weakHeredia, Provincia de HerediaCosta Rica129 km (80 mi)N of epicenterHeredia(pop: 21,900)II: Very weakProvincia de HerediaCosta Rica129 km (80 mi)N of epicenterSan Pablo(pop: 21,700)II: Very weakProvincia de HerediaCosta Rica129 km (80 mi)N of epicenterMercedes(pop: 26,000)II: Very weakHeredia, Provincia de HerediaCosta Rica129 km (80 mi)N of epicenterAlajuela(pop: 47,500)II: Very weakProvincia de AlajuelaCosta Rica135 km (84 mi)NW of epicenterChacarita(pop: 26,400)II: Very weakPuntarenas, Provincia de PuntarenasCosta Rica135 km (84 mi)NE of epicenterTurrialba(pop: 29,000)II: Very weakProvincia de CartagoCosta Rica137 km (85 mi)NW of epicenterPuntarenas(pop: 35,700)II: Very weakProvincia de PuntarenasCosta RicaNotes:(*) 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 GMT2026-03-31EpicenterAgency3.91 km0.6 mi06:20:3166 Km al sur de Puerto Quepos, Costa RicaINETEREarthquake statisticsAverage number of earthquakesBased on data from the past 26 years and our earthquake archive back to 1900, there are about 838 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.19 quakes per year (or 1 quake every 5.3 years)Mag. 5 or higher: 1.56 quakes per yearMag. 4 or higher: 35.6 quakes per year (or 3 quakes per month)Mag. 3 or higher: 339 quakes per year (or 28.2 quakes per month)Mag. 2 or higher: 749 quakes per year (or 62 quakes per month)Mag. 1 or higher: 835 quakes per year (or 70 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 24 quakes above magnitude 6 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