Moderate magnitude 4.0 earthquake at 8 km depth9 Oct 21:00 UTC: First to report: VolcanoDiscovery after 5 minutes.9 Oct 21:00: Now using data updates from INETERI didn't feel itI felt this quakeEarthquake detailsDate & timeOct 9, 2026 20:55:31 UTC - Local time at epicenterFriday, Oct 9, 2026, at 02:55 pm (America/Costa Rica GMT -6)Statuspreliminary (automatic detection)Magnitude4.0Depth8 kmEpicenter latitude / longitude9.133°N / 83.555°WPerez Zeledon, Provincia de San Jose, Costa RicaAlso near: Panama 69 km (43 mi) awaySeismic antipode9.133°S / 96.445°EShaking intensityIV Light shaking near epicenterFelt2 reportsPrimary data sourceINETERNearest volcanoIrazu (100 km / 62 mi)Weather at epicenter at time of quakeOvercast Clouds 25.9°C (79 F), humidity: 90%, wind: 1 m/s (2 kts) from SWEstimated seismic energy released6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 tons of TNT) | equivalent to ONE quake of magnitude 4.0 | about seismic energy13 minutes ago reported feltOct 9, 2026 20:55 GMT / Oct 9, 2026 02:55 pm (Costa Rica time)Lat / Lng: 9.133 / -83.555: 36 km Al Norte De Dominical, Costa RicaSource: INETERDetail info | Read user reports | You felt it? - Report it!';storedMarkers.push(['quake-23424354',9.13300,-83.55500,'13 minutes ago: Mag. 4.0, 36 km Al Norte De Dominical, Costa Rica',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 Costa RicaNearby placesThe closest larger town where the quake might have been felt is Paraiso, a town with 40,000 inhabitants in Costa Rica, in 86 km (53 mi) distance northwest of the epicenter. People likely experienced very weak shaking there. Many smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking. In the capital of Costa Rica, San Jose, 106 km (66 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(*)RegionCountry16 km (10 mi)N of epicenterMercedes(pop: 5,470)IV: LightPerez Zeledon, Provincia de San JoseCosta Rica19 km (12 mi)S of epicenterPuerto Cortes(pop: 3,850)III: WeakOsa, Provincia de PuntarenasCosta Rica25 km (15 mi)E of epicenterBuenos Aires(pop: 11,700)III: WeakProvincia de PuntarenasCosta Rica26 km (16 mi)NW of epicenterDaniel Flores(pop: 10,000)III: WeakPerez Zeledon, Provincia de San JoseCosta Rica30 km (19 mi)NW of epicenterSan Isidro(pop: 34,900)III: WeakPerez Zeledon, Provincia de San JoseCosta Rica73 km (45 mi)SE of epicenterSan Vito(pop: 3,980)II: Very weakCoto Brus, Provincia de PuntarenasCosta Rica74 km (46 mi)NW of epicenterQuepos(pop: 7,810)II: Very weakProvincia de PuntarenasCosta Rica76 km (47 mi)SE of epicenterGolfito(pop: 6,780)II: Very weakProvincia de PuntarenasCosta Rica77 km (48 mi)N of epicenterPejibaye(pop: 1,630)II: Very weakJimenez, Provincia de CartagoCosta Rica78 km (48 mi)NW of epicenterSan Marcos(pop: 4,260)II: Very weakTarrazu, Provincia de San JoseCosta Rica86 km (53 mi)NW of epicenterParaiso(pop: 39,700)II: Very weakParaiso, Provincia de CartagoCosta Rica87 km (54 mi)SE of epicenterCorredor(pop: 7,080)II: Very weakProvincia de PuntarenasCosta Rica87 km (54 mi)N of epicenterTurrialba(pop: 29,000)II: Very weakProvincia de CartagoCosta Rica91 km (56 mi)NW of epicenterCartago(pop: 26,600)II: Very weakProvincia de CartagoCosta Rica98 km (61 mi)NW of epicenterTres Rios(pop: 10,400)II: Very weakLa Union, Provincia de CartagoCosta Rica98 km (61 mi)NW of epicenterSan Diego(pop: 17,000)II: Very weakLa Union, Provincia de CartagoCosta Rica99 km (61 mi)NW of epicenterPatarra(pop: 24,000)II: Very weakDesamparados, Provincia de San JoseCosta Rica99 km (62 mi)NW of epicenterSan Miguel(pop: 28,800)II: Very weakDesamparados, Provincia de San JoseCosta Rica100 km (62 mi)NW of epicenterAserri(pop: 25,900)II: Very weakAserri, Provincia de San JoseCosta Rica100 km (62 mi)NW of epicenterSan Rafael Arriba(pop: 15,100)II: Very weakDesamparados, Provincia de San JoseCosta Rica101 km (63 mi)NW of epicenterTejar(pop: 22,400)II: Very weakAcosta, Provincia de San JoseCosta Rica101 km (63 mi)NW of epicenterSan Juan de Dios(pop: 15,500)II: Very weakDesamparados, Provincia de San JoseCosta Rica102 km (63 mi)NW of epicenterCurridabat(pop: 34,600)II: Very weakProvincia de San JoseCosta Rica104 km (65 mi)NW of epicenterSan Pedro(pop: 27,500)II: Very weakMontes de Oca, Provincia de San JoseCosta Rica105 km (65 mi)NW of epicenterSan Felipe(pop: 25,000)II: Very weakAlajuelita, Provincia de San JoseCosta Rica105 km (66 mi)NW of epicenterIpis(pop: 26,700)II: Very weakGoicoechea, Provincia de San JoseCosta Rica106 km (66 mi)NW of epicenterPurral(pop: 30,000)II: Very weakGoicoechea, Provincia de San JoseCosta Rica106 km (66 mi)NW of epicenterGuadalupe(pop: 26,000)II: Very weakGoicoechea, Provincia de San JoseCosta Rica106 km (66 mi)NW of epicenterSan Jose(pop: 335,000)II: Very weakSan Jose, Provincia de San JoseCosta Rica107 km (66 mi)NW of epicenterSan Vicente(pop: 34,400)II: Very weakMoravia, Provincia de San JoseCosta Rica107 km (66 mi)NW of epicenterCalle Blancos(pop: 20,700)II: Very weakGoicoechea, Provincia de San JoseCosta Rica107 km (66 mi)NW of epicenterSan Vicente(pop: 34,400)II: Very weakMoravia, Provincia de San JoseCosta Rica107 km (66 mi)NW of epicenterSan Vicente de Moravia(pop: 34,400)II: Very weakMoravia, Provincia de San JoseCosta Rica108 km (67 mi)NW of epicenterColima(pop: 15,900)II: Very weakTibas, Provincia de San JoseCosta Rica109 km (68 mi)NW of epicenterSan Juan(pop: 26,000)II: Very weakTibas, Provincia de San JoseCosta Rica109 km (68 mi)NW of epicenterSan Rafael(pop: 25,400)II: Very weakEscazu, Provincia de San JoseCosta Rica111 km (69 mi)NE of epicenterPuerto Limón(pop: 63,100)II: Very weakLimon, Provincia de LimonCosta Rica112 km (70 mi)NW of epicenterSan Rafael Abajo(pop: 27,400)II: Very weakPuriscal, Provincia de San JoseCosta Rica115 km (71 mi)NW of epicenterSan Francisco(pop: 55,900)II: Very weakHeredia, Provincia de HerediaCosta Rica122 km (76 mi)NW of epicenterAlajuela(pop: 47,500)II: Very weakProvincia de AlajuelaCosta RicaNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quake (4)The first report about ground shaking reached us after only 5 minutes, before other agencies reported it. So far, we have received 4 reports for this quake from Costa Rica. Out of these, 2 people indicated they felt it. The quake was reported to have been felt in up to approx. 110 km (68 mi) distance.Most reports came from San Jose (1 report), the capital of Costa Rica with 340,000 inhabitants in 106 km (66 mi) distance northwest of the epicenter. Further below is a list of places where most people reported this quake.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.Translate374.9 km ESE of epicenter [Map] / not felt (reported through our app)105.8 km NNW of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)130.5 km ESE of epicenter [Map] / not felt (reported through our iOS app)120.6 km ENE of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)List of cities/places with most reportsPlaceDistance from epicenterAverage reported Shaking IntensityNr. of reportsSan Jose, Provincia de San Jose, Costa Rica(Pop.: 335,007)106 km (66 mi)NW of epicenterII: Very weak shaking1Note: Only reports with latitude/longitude coordinate positions given (4 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 (*)I: Not felt2130–374 km (81–233 mi)252 km (157 mi)II: Very weak shaking1106–106 km (66–66 mi)106 km (66 mi)Notes(*) Reports are filtered to exclude those that are likely highly inaccurate or esaggerated.Only reports with latitude/longitude coordinate positions given (4 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 GMT2026-10-9EpicenterAgency4.08 km5 mi20:55:3136 Km al norte de Dominical, Costa RicaINETERAftershocks 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 1 km2 (0 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 2 km (1 mi).[More info]Recorded aftershocks, latest first (0 quake)Oct 9, 2026 02:55 pm (Costa Rica)13 minutes ago - felt4.08 km0 km - This quake30 km SE of San Isidro, Provincia de San Jose, Costa RicaMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 26 years and our earthquake archive back to 1900, there are about 1,400 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.03 quakes per year (or 1 quake every 31.3 years)Mag. 6 or higher: 0.23 quakes per year (or 1 quake every 4.3 years)Mag. 5 or higher: 2.1 quakes per yearMag. 4 or higher: 43 quakes per year (or 3.6 quakes per month)Mag. 3 or higher: 453 quakes per year (or 37.8 quakes per month)Mag. 2 or higher: 1,200 quakes per year (or 3.2 quakes per day)Mag. 1 or higher: 1,300 quakes per year (or 3.7 quakes per day)The area where this quake occurred has a very high level of seismic activity. It has had at least 4 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 30 to 35 years.Number of quakes per yearPrevious quakes in the same area of this earthquake