Light magnitude 3.9 earthquake at 16 km depth17 Sep 12:28 UTC: First to report: INETER after 6 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeSep 17, 2026 12:22:26 UTC - Local time at epicenterThursday, Sep 17, 2026, at 06:22 am (GMT -6)Statuspreliminary (automatic detection)Magnitude3.9Depth16 kmEpicenter latitude / longitude9.18°N / 84.145°WCosta RicaSeismic antipode9.18°S / 95.855°EShaking intensityIV Light shaking near epicenterFelt1 reportPrimary data sourceINETERNearest volcanoIrazu (94 km / 58 mi)Weather at epicenter at time of quakeLight Rain 28.3°C (83 F), humidity: 78%, wind: 2 m/s (5 kts) from SEEstimated 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 energy14 minutes ago reported feltSep 17, 2026 12:22 GMT / Sep 17, 2026 06:22 am (GMT -6)Lat / Lng: 9.18 / -84.145: 28 km Al Sur De Puerto Quepos, Costa RicaSource: INETERDetail info | Read user reports | You felt it? - Report it!';storedMarkers.push(['quake-23370187',9.18000,-84.14500,'14 minutes ago: Mag. 3.9, 28 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 Jose, the capital of Costa Rica with 340,000 inhabitants, in 84 km (52 mi) distance north 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.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry28 km (17 mi)N of epicenterQuepos(pop: 7,810)III: WeakProvincia de PuntarenasCosta Rica43 km (27 mi)NW of epicenterParrita(pop: 3,730)III: WeakProvincia de PuntarenasCosta Rica53 km (33 mi)NE of epicenterSan Isidro(pop: 34,900)II: Very weakPerez Zeledon, Provincia de San JoseCosta Rica55 km (34 mi)E of epicenterDaniel Flores(pop: 10,000)II: Very weakPerez Zeledon, Provincia de San JoseCosta Rica55 km (34 mi)N of epicenterSan Marcos(pop: 4,260)II: Very weakTarrazu, Provincia de San JoseCosta Rica63 km (39 mi)E of epicenterMercedes(pop: 5,470)II: Very weakPerez Zeledon, Provincia de San JoseCosta Rica63 km (39 mi)N of epicenterTejar(pop: 22,400)II: Very weakAcosta, Provincia de San JoseCosta Rica74 km (46 mi)N of epicenterSan Rafael Abajo(pop: 27,400)II: Very weakPuriscal, Provincia de San JoseCosta Rica76 km (47 mi)N of epicenterAserri(pop: 25,900)II: Very weakAserri, Provincia de San JoseCosta Rica77 km (48 mi)N of epicenterSan Miguel(pop: 28,800)II: Very weakDesamparados, Provincia de San JoseCosta Rica78 km (48 mi)N of epicenterSan Rafael Arriba(pop: 15,100)II: Very weakDesamparados, Provincia de San JoseCosta Rica78 km (48 mi)N of epicenterSan Juan de Dios(pop: 15,500)II: Very weakDesamparados, Provincia de San JoseCosta Rica79 km (49 mi)N of epicenterPatarra(pop: 24,000)II: Very weakDesamparados, Provincia de San JoseCosta Rica79 km (49 mi)NE of epicenterParaiso(pop: 39,700)II: Very weakParaiso, Provincia de CartagoCosta Rica81 km (50 mi)N of epicenterAlajuelita(pop: 13,800)II: Very weakProvincia de San JoseCosta Rica81 km (50 mi)N of epicenterSan Felipe(pop: 25,000)II: Very weakAlajuelita, Provincia de San JoseCosta Rica82 km (51 mi)N of epicenterSan Diego(pop: 17,000)II: Very weakLa Union, Provincia de CartagoCosta Rica82 km (51 mi)N of epicenterEscazu(pop: 12,100)II: Very weakEscazu, Provincia de San JoseCosta Rica83 km (51 mi)N of epicenterCurridabat(pop: 34,600)II: Very weakProvincia de San JoseCosta Rica83 km (52 mi)N of epicenterSan Rafael(pop: 25,400)II: Very weakEscazu, Provincia de San JoseCosta Rica84 km (52 mi)N of epicenterSan Pedro(pop: 27,500)II: Very weakMontes de Oca, Provincia de San JoseCosta Rica84 km (52 mi)N of epicenterSan Jose(pop: 335,000)II: Very weakSan Jose, Provincia de San JoseCosta Rica85 km (53 mi)N of epicenterConcepcion(pop: 14,000)II: Very weakLa Union, Provincia de CartagoCosta Rica86 km (53 mi)N of epicenterGuadalupe(pop: 26,000)II: Very weakGoicoechea, Provincia de San JoseCosta Rica86 km (53 mi)N of epicenterColima(pop: 15,900)II: Very weakTibas, Provincia de San JoseCosta Rica86 km (53 mi)N of epicenterCalle Blancos(pop: 20,700)II: Very weakGoicoechea, Provincia de San JoseCosta Rica86 km (54 mi)N of epicenterSabanilla(pop: 13,300)II: Very weakMontes de Oca, Provincia de San JoseCosta Rica87 km (54 mi)N of epicenterSan Juan(pop: 26,000)II: Very weakTibas, Provincia de San JoseCosta Rica87 km (54 mi)N of epicenterPurral(pop: 30,000)II: Very weakGoicoechea, Provincia de San JoseCosta Rica87 km (54 mi)N of epicenterSan Vicente(pop: 34,400)II: Very weakMoravia, Provincia de San JoseCosta Rica88 km (54 mi)N of epicenterSan Vicente(pop: 34,400)II: Very weakMoravia, Provincia de San JoseCosta Rica88 km (54 mi)N of epicenterSan Vicente de Moravia(pop: 34,400)II: Very weakMoravia, Provincia de San JoseCosta Rica89 km (55 mi)N of epicenterIpis(pop: 26,700)II: Very weakGoicoechea, Provincia de San JoseCosta Rica90 km (56 mi)N of epicenterSan Francisco(pop: 55,900)II: Very weakHeredia, Provincia de HerediaCosta Rica91 km (56 mi)N of epicenterSan Pablo(pop: 21,700)II: Very weakProvincia de HerediaCosta Rica91 km (57 mi)N of epicenterHeredia(pop: 21,900)II: Very weakProvincia de HerediaCosta Rica92 km (57 mi)N of epicenterMercedes(pop: 26,000)II: Very weakHeredia, Provincia de HerediaCosta Rica93 km (58 mi)N of epicenterAlajuela(pop: 47,500)II: Very weakProvincia de AlajuelaCosta Rica95 km (59 mi)NE of epicenterTurrialba(pop: 29,000)II: Very weakProvincia de CartagoCosta Rica151 km (94 mi)NE of epicenterPuerto Limón(pop: 63,100)II: Very weakLimon, Provincia de LimonCosta RicaNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quake (1)So far, we have received 1 report for this quake from Costa Rica.It came from near San Jose, the capital of Costa Rica with 340,000 inhabitants in 84 km (52 mi) distance north of the epicenter.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.Translate84.4 km N of epicenter [Map] / Very weak shaking (MMI II) (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)84 km (52 mi)N of epicenterII: Very weak shaking1Note: Only reports with latitude/longitude coordinate positions given (1 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 (*)II: Very weak shaking184–84 km (52–52 mi)84 km (52 mi)Notes(*) Reports are filtered to exclude those that are likely highly inaccurate or esaggerated.Only reports with latitude/longitude coordinate positions given (1 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 GMT2026-09-17EpicenterAgency3.916 km9.9 mi12:22:2628 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 1,500 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.02 quakes per year (or 1 quake every 62.5 years)Mag. 6 or higher: 0.26 quakes per year (or 1 quake every 3.9 years)Mag. 5 or higher: 1.98 quakes per yearMag. 4 or higher: 44 quakes per year (or 3.7 quakes per month)Mag. 3 or higher: 460 quakes per year (or 38.4 quakes per month)Mag. 2 or higher: 1,200 quakes per year (or 3.3 quakes per day)Mag. 1 or higher: 1,400 quakes per year (or 3.9 quakes per day)The area where this quake occurred has a very high level of seismic activity. It has had at least 2 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 60 to 65 years.Number of quakes per yearPrevious quakes in the same area of this earthquakeThe earthquake occurred 5 days after a magnitude 4.0 earthquake had hit on Saturday, Sep 12, 2026, at 03:59 am (GMT -6 local time) in 28 km (17 mi) distance to the south:Mag. 4.0 earthquake North Pacific Ocean - 62 km southwest of San Isidro, Costa Rica -The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 6.5. It had occurred 9 years earlier, on Sunday, Nov 12, 2017, at 08:28 pm local time (America/Costa Rica GMT -6) in Provincia de San Jose, Costa Rica:Mag. 6.5 earthquake 30 km southwest of San Rafael Abajo - Provincia de San Jose, Costa Rica - Nov 12, 2017 -The strongest-ever (since 1900) recorded quake in this area measured magnitude 7.6. It had occurred 14 years ago earlier, on Wednesday, Sep 5, 2012, at 08:42 am local time (America/Costa Rica GMT -6) in Provincia de Guanacaste, Costa Rica:Mag. 7.6 earthquake 17 km southeast of Nicoya - Provincia de Guanacaste, Costa Rica - Sep 5, 2012 -Below is a list and map of larger or recent quakes that had occurred near the epicenter before this earthquake (within up to 100 km/61 mi distance, up to 300 km/183 mi for very large quakes above mag. 7). Filter and sort the list by magnitude or time.Max results102050100AllMagnitudeAll2+3+4+5+6+7+8+Time before48 hours1 week30 days1 year5 years30 yearsAny ageDate and TimeMagDepthDistanceLocationDetailsMapSep 15, 01:22 am (GMT -6)3.310 km97 km (60 mi) to the SNorth Pacific Ocean, 181 km south of San Jose, Provincia de San Jose, Costa Rica I felt itInfoSep 14, 09:35 pm (GMT -6)3.08 km28 km (17 mi) to the SWNorth Pacific Ocean, 76 km southwest of San Isidro, Costa Rica I felt itInfoSep 13, 01:12 pm (GMT -6)3.79 km33 km (20 mi) to the SNorth Pacific Ocean, 72 km southwest of San Isidro, Costa Rica I felt itInfoSep 12, 03:59 am (GMT -6)4.010 km28 km (17 mi) to the SNorth Pacific Ocean, 62 km southwest of San Isidro, Costa Rica I felt it - 4 reportsInfoSep 11, 10:42 pm (GMT -6)3.910 km28 km (17 mi) to the SNorth Pacific Ocean, 64 km southwest of San Isidro, Costa Rica I felt itInfoSep 11, 08:19 pm (Costa_Rica)4.515 km34 km (21 mi) to the SNorth Pacific Ocean, 71 km southwest of San Isidro, Costa Rica I felt it - 16 reportsInfoSep 11, 12:07 am (GMT -6)4.829 km34 km (21 mi) to the SNorth Pacific Ocean, 75 km southwest of San Isidro, Costa Rica I felt it - 2 reportsInfoSep 11, 12:03 am (GMT -6)5.128 km28 km (18 mi) to the SNorth Pacific Ocean, 62 km southwest of San Isidro, Costa Rica I felt it - 1 reportInfoSep 10, 03:38 am (GMT -6)6.3155 km54 km (33 mi) to the SWNorth Pacific Ocean, 101 km southwest of San Isidro, Costa RicaInfoOct 21, 2025 09:57 pm (Costa Rica)5.931 km21 km (13 mi) to the N 7 km SSW of Quepos, Costa Rica 835 reportsInfoNov 12, 2017 08:28 pm (Costa Rica)6.525 km61 km (38 mi) to the NW 30 km southwest of San Rafael Abajo, Provincia de San Jose, Costa Rica 151 reportsInfoSep 5, 2012 08:42 am (Costa Rica)7.635 km163 km (101 mi) to the NW 11 km ENE of Hojancha, Costa Rica 6 reportsInfoFeb 13, 2012 04:55 am (Costa Rica)5.916 km2.7 km (1.7 mi) to the ENorth Pacific Ocean, 28 km south of Quepos, Provincia de Puntarenas, Costa RicaInfoMay 13, 2011 04:47 pm (Costa Rica)5.973 km88 km (55 mi) to the N 7.6 km east of Atenas, Provincia de Alajuela, Costa RicaInfoMay 31, 2010 09:26 pm (Costa Rica)6.018 km18 km (11 mi) to the NNorth Pacific Ocean, 68 km south of San Jose, Provincia de San Jose, Costa RicaInfoMay 20, 2010 04:16 pm (Costa Rica)5.921 km19 km (12 mi) to the NWNorth Pacific Ocean, 80 km south of San Jose, Provincia de San Jose, Costa RicaInfoNov 20, 2004 02:07 am (Costa Rica)6.416 km47 km (29 mi) to the NProvincia de Puntarenas, 38 km south of San Jose, Costa RicaInfoJun 15, 2002 08:46 pm (Costa Rica)6.435 km47 km (29 mi) to the SNorth Pacific Ocean, 72 km southwest of San Isidro, Costa RicaInfoFeb 20, 2000 02:27 am (Costa Rica)5.720 km36 km (23 mi) to the SNorth Pacific Ocean, 74 km southwest of San Isidro, Costa RicaInfoAug 21, 1999 04:49 am (GMT -6)5.824 km37 km (23 mi) to the SENorth Pacific Ocean, 57 km southwest of San Isidro, Costa RicaInfoAug 20, 1999 04:02 am (Costa Rica)6.920 km15 km (9.4 mi) to the SNorth Pacific Ocean, 99 km south of San Jose, Provincia de San Jose, Costa RicaInfoSep 4, 1996 01:06 pm (Costa Rica)6.233 km24 km (15 mi) to the NWNorth Pacific Ocean, 66 km south of San Jose, Provincia de San Jose, Costa RicaInfoAug 28, 1996 11:16 am (Costa Rica)5.933 km29 km (18 mi) to the NWNorth Pacific Ocean, 67 km south of San Jose, Provincia de San Jose, Costa RicaInfoApr 24, 1991 01:13 pm (Costa Rica)6.213 km93 km (58 mi) to the NEProvincia de Cartago, 66 km east of San Jose, Provincia de San Jose, Costa RicaInfoApr 22, 1991 03:56 pm (Costa Rica)7.610 km130 km (81 mi) to the NE 34 km south of Puerto Limón, Provincia de Limon, Costa RicaInfoDec 22, 1990 11:27 am (Costa Rica)6.017 km79 km (49 mi) to the N 25 km west of San Jose, Provincia de San Jose, Costa RicaInfoApr 27, 1990 07:23 pm (Costa Rica)6.423 km78 km (48 mi) to the SEProvincia de Puntarenas, 58 km south of San Isidro, Costa RicaInfoMar 25, 1990 07:22 am (Costa Rica)7.322 km110 km (68 mi) to the NW 7 km SSE of Puntarenas, Costa RicaInfoJul 3, 1983 11:14 am (Costa Rica)6.533 km73 km (45 mi) to the NEProvincia de Cartago, 54 km southeast of San Jose, Costa RicaInfoApr 2, 1983 08:50 pm (Costa Rica)7.137 km124 km (77 mi) to the SE 13 km north of Golfito, Provincia de Puntarenas, Costa RicaInfoAug 23, 1979 10:26 pm (Costa Rica)6.440 km77 km (48 mi) to the EProvincia de Puntarenas, 52 km southeast of San Isidro, Costa RicaInfoAug 22, 1978 06:38 pm (Costa Rica)7.056 km164 km (102 mi) to the NW 19 km N of Nandayure, Costa RicaInfoFeb 28, 1974 02:20 pm (Costa Rica)6.246 km19 km (12 mi) to the NENorth Pacific Ocean, 67 km south of San Jose, Provincia de San Jose, Costa RicaInfoSep 9, 1952 06:54 am (GMT -6)6.615 km24 km (15 mi) to the SWNorth Pacific Ocean, 72 km southwest of San Isidro, Costa RicaInfoOct 5, 1950 04:09 pm (Universal Time)7.598 km175 km (109 mi) to the NW Costa RicaInfoNov 19, 1948 01:04 am (Universal Time)6.325 km52 km (32 mi) to the NE 9 km NW of San Isidro, Costa RicaInfoDec 6, 1941 09:24 pm (Universal Time)6.915 km90 km (56 mi) to the SWNorth Pacific Ocean, 167 km south of San Jose, Provincia de San Jose, Costa RicaInfoDec 5, 1941 08:47 pm (Universal Time)7.420 km107 km (66 mi) to the SENorth Pacific Ocean, 71 km southwest of Golfito, Costa RicaInfoOct 27, 1940 05:35 am (Universal Time)6.735 km39 km (25 mi) to the NW 8.5 km southwest of Parrita, Provincia de Puntarenas, Costa RicaInfoDec 22, 1939 04:44 am (Universal Time)6.825 km82 km (51 mi) to the NW Costa RicaInfoDec 21, 1939 08:54 pm (Universal Time)7.525 km95 km (59 mi) to the NProvincia de Alajuela, 36 km west of San Jose, Provincia de San Jose, Costa RicaInfoMar 9, 1937 03:40 pm (Universal Time)6.420 km85 km (53 mi) to the SE 15 km southeast of Puerto Cortes, Provincia de Puntarenas, Costa RicaInfoJul 18, 1934 01:36 am (Universal Time)7.530 km232 km (144 mi) to the SENorth Pacific Ocean, 64 km south of David, Provincia de Chiriqui, PanamaInfoMar 4, 1924 10:07 am (Universal Time)6.725 km61 km (38 mi) to the NWProvincia de San Jose, 76 km west of Paraiso, Provincia de Cartago, Costa RicaInfoAug 16, 1909 06:58 am (Universal Time)7.10 km93 km (58 mi) to the N 12 km northeast of San Jose, Provincia de San Jose, Costa RicaInfoDec 30, 1907 05:26 am (Universal Time)7.235 km306 km (190 mi) to the NW 92 km SW of San Juan Del Sur, NicaraguaInfoJan 20, 1905 12:23 pm (Costa Rica)6.80 km95 km (59 mi) to the NW 22 km southeast of Puntarenas, Provincia de Puntarenas, Costa RicaInfoDec 20, 1904 12:44 am (Panama)7.20 km148 km (92 mi) to the E 40 km southwest of Changuinola, Provincia de Bocas del Toro, PanamaInfoJun 21, 1900 02:52 pm (Costa Rica)7.50 km174 km (108 mi) to the NW 18 km south of Nicoya, Provincia de Guanacaste, Costa RicaInfoMap of earlier quakes in the area of this quakeMax results102050100AllMagnitudeAll2+3+4+5+6+7+8+Time before48 hours1 week30 days1 year5 years30 yearsAny ageOldest quakes are shown in yellow, most recent in red.[quakes -][quakes +][smaller][bigger]