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Strong mag. 6.1 earthquake - Costa Rica on Friday, 17 August 2018 - information

Strong mag. 6.1 earthquake - Costa Rica on Friday, 17 August 2018 at 23:22 (GMT)

Strong mag. 6.1 earthquake  - Costa Rica on Friday, 17 August 2018 at 23:22 (GMT)
17 Aug 23:28 UTC: First to report: GFZ after 6 minutes.
Aug 17 23:30: Magnitude recalculated from 6.2 to 6.1.
Date & time: 2018-08-17 11:22:23 UTC
Magnitude: 6.1
Depth: 10.0 km
Epicenter latitude / longitude: 8.66°N / 83.2°W (Costa Rica)
Nearest volcano: Baru (74 km / 46 mi)
Nearby towns and cities:
11 km (7 mi) NW of Golfito (pop: 6,800)
28 km (17 mi) W of Corredor (pop: 7,100)
31 km (19 mi) SW of San Vito (pop: 4,000)
88 km (55 mi) NW of David (pop: 82,000)
149 km (93 mi) S of Limón (pop: 63,100)
172 km (107 mi) SE of San José (pop: 335,000)
Primary data source: GFZ
Estimated released energy: 8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

Data for the same earthquake reported by different agencies

Info: The 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.
TimeMag. / DepthLocationSource
2018-08-17 23:22:23 UTCM 6.1 / 10 kmCosta RicaGFZ
2018-08-17 23:22:26 UTCM 6.0 / 40 kmCOSTA RICAEMSC
2018-08-17 23:22:24 UTC
2018-08-17 17:22:24 -06:00
M 6.1 / 15 km14km N of Golfito, Costa RicaUSGS
2018-08-17 23:22:26 UTCM 6.2 / 34.8 kmCosta RicaINGV

shake map
(shakemap: USGS)

User reports for this quake (186)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Was banging the wife and I dunno but she loved it / Violent shaking (MMI IX)
Punta Mala (60.6 km NW of epicenter) [Map] / Weak shaking (MMI III) : I was sitting in a chair inside a building and felt two short tremors that felt like a heavy truck passing by. Other people in the building felt it too and we immediately identified it as an eartquake. It was my first earthquake ever!
Arenal area . (259.6 km NW of epicenter) [Map] / Light shaking (MMI IV) : Licht shaking of the building, sitting outside ~ 20 der, 3 waves
148.9 km NW of epicenter [Map] / Light shaking (MMI IV)
Tejar, Cartago / Moderate shaking (MMI V)
Dnta Corcovado Lodge (32.1 km W of epicenter) [Map] / Very strong shaking (MMI VII) : For 20 secs or so the ground shook - the animals and reptiles fell quiet as the lodge we were in shook considerably - no damage, then the rainforest returned to normal - aftershock about 160 mins later and a further stronger one a day later
Volcan Panama / Moderate shaking (MMI V)
Playa hermosa / Light shaking (MMI IV)
San jose / Weak shaking (MMI III) : We thought there was a ghost in our hostel shaking the bed (we are really not use to earthquake)!
Ojochal, CR / Moderate shaking (MMI V)
202.1 km NW of epicenter [Map] / Light shaking (MMI IV) : I sitting outside and feltmy chairmoving side to side. The trees shook too. (reported through our app)
San Jose / Light shaking (MMI IV) : Soft shaking
Puerto Viejo (120.8 km NNE of epicenter) [Map] / Weak shaking (MMI III)
drake bay / Strong shaking (MMI VI) : buildings shaking for about 20 seconds
Samana Dominican Republic (1898.7 km NE of epicenter) [Map] / Light shaking (MMI IV) : Sitting at table my shelf with dishes rattled for a for a few seconds. Definitely an earthquake. Thought it was here in the D.R. but can find no record so I figured it must have been the one from Costa Rico? It was about that same time.
Los Algarrobos, Dolerá, Chiriquí muy fuerte (86.9 km E of epicenter) [Map] / Very strong shaking (MMI VII) (reported through our app)
52.5 km ENE of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
Costa Rica Spanish Institute Quepos (134.1 km NW of epicenter) [Map] / Weak shaking (MMI III)
Jaco / Weak shaking (MMI III)
168.2 km NNW of epicenter [Map] / Light shaking (MMI IV) : varias oscilaciones unos 10 seg.
La Garita, Alajuela (203.5 km NW of epicenter) [Map] / Moderate shaking (MMI V) : laying down, shakes for a while not certain, then knew, before I got to door, hard and moderate then stopped. It was 6.0 but felt the 4.9 aftershock later did not go out.
san jose / Light shaking (MMI IV)
Puerto jiminez (17.8 km SW of epicenter) [Map] / Strong shaking (MMI VI)
Escazú, Costa Rica / Light shaking (MMI IV)
La Fortuna / Light shaking (MMI IV)
Bocas / Moderate shaking (MMI V)
82.5 km NW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Drake Bay (55.5 km W of epicenter) [Map] / Very strong shaking (MMI VII) : It was a hard shaking that lasted at least 30 seconds.
Monteverde / Very weak shaking (MMI II)
Uvita / Weak shaking (MMI III)
Nuevo Arenal / Light shaking (MMI IV) : Gentle side to side movement.
Hereida (181.9 km NW of epicenter) [Map] / Light shaking (MMI IV) : Sitting at dining room table and felt light shaking, the ceiling fans and glass wear rattled.
181.9 km NW of epicenter [Map] / Severe shaking (MMI VIII) (reported through our app)
San Isidro De Grecia (201.2 km NW of epicenter) [Map] / Light shaking (MMI IV) : 40 seconds of a soft sway
Paso Ancho, Panama / Very strong shaking (MMI VII)
70.9 km NW of epicenter [Map] / Light shaking (MMI IV)
Jaco / Light shaking (MMI IV) : I experienced a long lasting (about 45 seconds) wobbling shake. The monitors on my desk shifted a bit. It felt kind of like being on a boat in lightly choppy waters. My hanging lights swayed a bit.
Carate (34.3 km SW of epicenter) [Map] / Very strong shaking (MMI VII) : Very strong jolt and shaking. Lost all our vino, some glasses, etc. Minor secondary shake. Rock walls dislodged.
Monteverde, Costa Rica / Weak shaking (MMI III)
Boquete / Moderate shaking (MMI V)
Ojochal / Weak shaking (MMI III) : In hammock by pool. Mild shake and water ripple.
Corcovado / Moderate shaking (MMI V)
175.2 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
Los Suenos / Light shaking (MMI IV)
Los Suenos / Light shaking (MMI IV)
San José / Light shaking (MMI IV)
David chiriqui (83.8 km E of epicenter) [Map] / Strong shaking (MMI VI) (reported through our app)
Alajuela / Moderate shaking (MMI V)
Puerto Armuelles, Panama (57.7 km SE of epicenter) [Map] / Moderate shaking (MMI V) : Window blinds and clothes in closet swaying. Unsteady to walk.
San Jose (173.4 km NW of epicenter) [Map] / Very weak shaking (MMI II)
on hill north of Ojochal de Osa, Puntarenas (70 km NW of epicenter) [Map] / Light shaking (MMI IV) : Noticed aftershock. Ripples on pool parallel to north wall. No apparent damage. Local weather light rain (heavier earlier). sunset on enveloping cloud surreal Light initial shaking for part of a minute, then intensified for a while, then stopped. Aftershock was brief and not as intense.
Zarcero / Light shaking (MMI IV) : Laying on the couch and it was a rolling ride. Enough shaking to make the rocking chair rock on its own. Lasted 15-20 seconds.
Barbacoas de Puriscal, SJ / Moderate shaking (MMI V)
Puntarenas - Garabito - Jacp / Moderate shaking (MMI V)
Linda Vista de Coto Brus (31.7 km ENE of epicenter) [Map] / Very strong shaking (MMI VII) : Many new cracks in the walls. Some broken glasses.
Escazu / Light shaking (MMI IV)
Terraba indigenous territory (46.3 km NNW of epicenter) [Map] / Moderate shaking (MMI V) : We all felt it. I was in bed and ran outside where others had gathered. We had to hold flat screen tv from falling off table.
San Jose / Moderate shaking (MMI V)
heredia / Light shaking (MMI IV) : fue muy fuerte pero rápidamente pasó
177.5 km NW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Boquete, Chiriquí province, Panama (82.9 km E of epicenter) [Map] / Light shaking (MMI IV) : Slight aftershock at 052 EST (reported through our app)
Golfito / Moderate shaking (MMI V) : No damage to wooden houses, glasses fell, trees shook
Uvita (83.6 km NW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
San Jose (166.8 km NW of epicenter) [Map] / Light shaking (MMI IV)
Mariott San Jose (182.3 km NW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Puerto Viejo / Very weak shaking (MMI II) : Felt more like rocking back and forth
San José / Very weak shaking (MMI II)
92.7 km NW of epicenter [Map] / Weak shaking (MMI III)
Puerto Viejo de Limon , Costa Rica (121.9 km ENE of epicenter) [Map] / Moderate shaking (MMI V) : Rock and roll for long duration
87.3 km ESE of epicenter [Map] / not felt (reported through our app)
Escazu / Weak shaking (MMI III) : Just felt a circular motion, nothing around me moved out of place.
213.9 km NW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
59.3 km E of epicenter [Map] / Light shaking (MMI IV) : Scared and ran out of house.
Jaco / Weak shaking (MMI III) : Was laying on the couch face facing up in a one floor apartment. The house shook for a few seconds.
173.7 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
186 km NW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
88.1 km ESE of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
Palo Verde San Isidro de El Guarco, Cartago / Moderate shaking (MMI V)
Isla san cristobal bocas del toro panama / Light shaking (MMI IV) : 1 item feel from shelf, lasted 20-30 seconds
San José, Hotel Presidents bar (171.1 km NW of epicenter) [Map] / Very weak shaking (MMI II) : The floor of the bar went a little fluid. Everyone looked up and at each other and the waiter motioned for people to stay calm. It was over within a few seconds.
Perez zeledon / Moderate shaking (MMI V)
San Isidro de Heredia / Moderate shaking (MMI V) : Moderate shaking, sideways, rocking movements, Cabin, wooden 1 story, horses laid down lasted about 20-30 seconds
San Ramon (213.1 km NW of epicenter) [Map] / Light shaking (MMI IV) : Shook me on the couch (reported through our app)
sortova panama (60.8 km E of epicenter) [Map] / Strong shaking (MMI VI) : rolling, dogs alarmed.
Escazú / Moderate shaking (MMI V)
66 km ENE of epicenter [Map] / Light shaking (MMI IV) : Two shakes, an initial 10 seconds, a slight pause, and then a 2nd shaking another 10 seconds that was a little harder the 2nd time. Sound waves continued the entire time.
San Jose, St Ana / Strong shaking (MMI VI) : Was a short warm up then full quake
176.4 km NW of epicenter [Map] / Light shaking (MMI IV)
Parrita (149.6 km NW of epicenter) [Map] / Weak shaking (MMI III)
Quepos (136.1 km NW of epicenter) [Map] / Light shaking (MMI IV)
San Josecito / Moderate shaking (MMI V)
Escazú, costa rica / Light shaking (MMI IV)
Piedras Blancas / Strong shaking (MMI VI)
178.4 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
San Jose / Weak shaking (MMI III)
alajuela / Strong shaking (MMI VI)
Ciudad Cortés / Moderate shaking (MMI V)
173.5 km NW of epicenter [Map] / Weak shaking (MMI III)
San Jose (168.2 km NW of epicenter) [Map] / Light shaking (MMI IV) : Long low undulating waves for approx 7 seconds
Carate costa ricA / Moderate shaking (MMI V)
Heredia / Weak shaking (MMI III)
San Vito Coto Brus / Strong shaking (MMI VI) : Strongest I’ve felt here in the 7 years we’ve lived in the area. Things fell off shelves and some furniture did move.
La Fortuna / Weak shaking (MMI III)
115.2 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
180.1 km NW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Ojochal, Osa Costa Rica / Light shaking (MMI IV)
Golfito / Very strong shaking (MMI VII)
82 km NW of epicenter [Map] / Light shaking (MMI IV) : Bed was shaking. Walls and floor moving. Rattling heard
Playa Cocles talamanca Puerto viejo / Light shaking (MMI IV)
San José, escazu / Moderate shaking (MMI V)
Pavas, San Jose, Costa Roca / Moderate shaking (MMI V)
Alfombra, Costa Rica / Moderate shaking (MMI V) : Long quake in duration.
69.7 km NW of epicenter [Map] / Moderate shaking (MMI V)
Escazu, Costa Rica / Light shaking (MMI IV) : Was on the 7th floor of a condo building, felt building shake like as if in a rocking chair
160.8 km NW of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
134.8 km NW of epicenter [Map] / Moderate shaking (MMI V) : I felt it 10 15 seconds Isla Damas
SJO Airport (185.1 km NW of epicenter) [Map] / Light shaking (MMI IV)
San José / Light shaking (MMI IV)
coronado de osa (67.8 km NW of epicenter) [Map] / Strong shaking (MMI VI)
San Jose / Weak shaking (MMI III)
Volcan ,David,Chiriqui, Panama (63.1 km ENE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
179.2 km NW of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
Parque los Sauces, San Francisco de Dos Rios, San / Very weak shaking (MMI II)
Puerto Viejo / Moderate shaking (MMI V) : Moderate shaking - house we are in really swayed
Uvita / Light shaking (MMI IV) : Though first quake we have experienced
120.2 km NNE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
200.8 km NW of epicenter [Map] / Light shaking (MMI IV) : Felt on volcano Poas (reported through our app)
Bocas / Moderate shaking (MMI V)
Puerto Jimenez, Costa Rica / Moderate shaking (MMI V)
Osa Mountain Village / Moderate shaking (MMI V)
169.4 km NW of epicenter [Map] / Moderate shaking (MMI V) : moderate shaking lasted 10 15 seconds Isla Danas
Birri de Heredia / Moderate shaking (MMI V)
Escaleras, Dominical / Light shaking (MMI IV)
52.5 km ENE of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
San Jose Real Intercontinental / Light shaking (MMI IV) : Staying at the Real Intercontinental. Did not last long but could feel and see the building shake and move for about 20 seconds.
179.9 km NW of epicenter [Map] / Very weak shaking (MMI II)
Ojochal Costa Rica / Light shaking (MMI IV) : Quite short - less than 10 seconds
Dominical, Costa Rica / Light shaking (MMI IV)
186.2 km NW of epicenter [Map] / Strong shaking (MMI VI) (reported through our app)
191.6 km NW of epicenter [Map] / Moderate shaking (MMI V)
ATENAS, ALAJUELA / Light shaking (MMI IV) : Longer than usual rolling motion, moderate but a bit scary
133.9 km NW of epicenter [Map] / Moderate shaking (MMI V) : On vacation here in Manuel Antonio, the earthquake didn’t seem to large, but we’re from California, so earthquakes aren’t a very big deal for us.
San José Escazú (175.3 km NW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
165.6 km NNW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
184.9 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
mercedes norte heredia (180.5 km NW of epicenter) [Map] / Weak shaking (MMI III) : was sitting on the bed. felt a light shaking in a wave sort of motion. only lasted a short time.
San Jose / Light shaking (MMI IV) : I felt a light shaking
Jaco / Weak shaking (MMI III)
188.5 km NW of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
Platanillo (96.7 km NW of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Dominical, Costa Rica / Moderate shaking (MMI V) : started small and grew slowly for about 30 seconds or so
jaco / Weak shaking (MMI III)
279.1 km NW of epicenter [Map] / Strong shaking (MMI VI) (reported through our app)
176.3 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
286.4 km NW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
San José, Costa Rica / Light shaking (MMI IV)
Changuinola (118.4 km NE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
La unión concepción tres rios / Light shaking (MMI IV)
186.6 km NW of epicenter [Map] / Strong shaking (MMI VI)
168.6 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
Surrey / Moderate shaking (MMI V)
Ipis Guadalupe / Moderate shaking (MMI V)
200 km NW of epicenter [Map] / Weak shaking (MMI III)
167.4 km NW of epicenter [Map] / Severe shaking (MMI VIII) (reported through our app)
San Carlos (Panama, 349 km E of epicenter) : On 21st floor of condo, felt a back and forth swaying here in San Carlos Panama. (reported through EMSC)
Puerto Armuelles (Panama, 56 km SE of epicenter) : Shook for a long time. No damage. (reported through EMSC)
Jacó (Costa Rica, 192 km NW of epicenter) : At a restaurant and the lights were swinging (reported through EMSC)
(Costa Rica, 183 km NW of epicenter) : Not too much strong. (reported through EMSC)
San José (Costa Rica, 173 km NW of epicenter) : A fair shake in central San Jose, not so severe. (reported through EMSC)
San José (Costa Rica, 171 km NW of epicenter) : Fuerte temblor en Golfito, Costa Rica (reported through EMSC)
Savegre (Costa Rica, 117 km NW of epicenter) : On central coast of Costa Rica. Shook for a good 30 seconds. Pool got waves. (reported through EMSC)
David (Panama, 84 km E of epicenter) : Se sintió por aproximadamente 20 segundos (reported through EMSC)
San Pablo Viejo (Panama, 76 km E of epicenter) : Algo fuerte (reported through EMSC)
Volcán (Panama, 59 km E of epicenter) : Stay moving for a while felt strong shuck up the house strong (reported through EMSC)
Puerto Armuelles (Panama, 55 km SE of epicenter) : Muy fuerte, se sintió por 30s al menos. (reported through EMSC)
Golfito (Costa Rica, 9 km SE of epicenter) : Se sintió fuerte, desde el puro epicentro (reported through EMSC)
Panamá (Panama, 404 km E of epicenter) : Increíblemente lo sentí en Parque Lefevre en Panamá (reported through EMSC)
San Miguelito (Panama, 403 km E of epicenter) : No se sintió en Ciudad de Panamá (reported through EMSC)
Coronado (Panama, 361 km E of epicenter) : Juste une légère ondulation (reported through EMSC)
San José (Costa Rica, 174 km NW of epicenter) : Strong shaking (reported through EMSC)
San José (Costa Rica, 173 km NW of epicenter) : Leve en la ciudad capital, San José, Rohrmoser (reported through EMSC)
Esterillos Este (Costa Rica, 168 km NW of epicenter) : Lasted for about 10 seconds (reported through EMSC)
San José (Costa Rica, 167 km NW of epicenter) : Como gelatina ups! (reported through EMSC)
Quepos (Costa Rica, 136 km NW of epicenter) : Shook for at least 7 seconds. Monkeys went crazy for 10 minutes (reported through EMSC)
Bocas del Toro Province (Panama, 124 km NE of epicenter) : Felt the sofa move for about 10 seconds. (reported through EMSC)
Savegre (Costa Rica, 108 km NW of epicenter) : Near Dominical, pretty strong shaking for 10-15 sec. (reported through EMSC)

Aftershocks of the 6.1 quake Costa Rica 2018-08-17 23:22 UTC

More info
Recorded aftershocks, latest first (157 quakes):
  • 08 Feb 2019 05:48 UTC
    | M 3.3 |
    20 km (12.4 mi) depth
    |
    59 km (37 mi) distance
    | RSN | Details
  • 07 Feb 2019 05:41 UTC
    | M 2.9 |
    24 km (14.9 mi) depth
    |
    41 km (26 mi) distance
    | RSN | Details
  • 06 Feb 2019 11:02 UTC
    | M 3.5 |
    21 km (13 mi) depth
    |
    38 km (23 mi) distance
    | RSN | Details
  • 04 Feb 2019 12:33 UTC
    | M 3.2 |
    22 km (13.7 mi) depth
    |
    34 km (21 mi) distance
    | RSN | Details
  • 04 Feb 2019 00:12 UTC
    | M 3.1 |
    23 km (14.3 mi) depth
    |
    35 km (22 mi) distance
    | RSN | Details
  • 03 Feb 2019 08:51 UTC
    | M 2.9 |
    25 km (15.5 mi) depth
    |
    36 km (22 mi) distance
    | RSN | Details
  • 25 Jan 2019 14:27 UTC
    | M 2.9 |
    26 km (16.2 mi) depth
    |
    64 km (40 mi) distance
    | RSN | Details
  • 21 Jan 2019 21:19 UTC
    | M 2.9 |
    29 km (18 mi) depth
    |
    39 km (24 mi) distance
    | RSN | Details
  • 21 Jan 2019 17:36 UTC
    | M 3.0 |
    31 km (19.3 mi) depth
    |
    13 km (8 mi) distance
    | RSN | Details
  • 18 Jan 2019 09:33 UTC
    | M 3.1 |
    20 km (12.4 mi) depth
    |
    27 km (17 mi) distance
    | RSN | Details
  • 18 Jan 2019 09:12 UTC
    | M 3.1 |
    20 km (12.4 mi) depth
    |
    27 km (17 mi) distance
    | RSN | Details
  • 18 Jan 2019 08:08 UTC
    | M 3.1 |
    20 km (12.4 mi) depth
    |
    27 km (17 mi) distance
    | RSN | Details
  • 17 Jan 2019 10:02 UTC
    | M 3.0 |
    22 km (13.7 mi) depth
    |
    53 km (33 mi) distance
    | RSN | Details
  • 15 Jan 2019 10:16 UTC
    | M 3.7 |
    15 km (9.3 mi) depth
    |
    67 km (42 mi) distance
    | RSN | Details
  • 14 Jan 2019 19:23 UTC
    | M 3.7 |
    30 km (18.6 mi) depth
    |
    9 km (5 mi) distance
    | RSN | Details
  • 13 Jan 2019 08:37 UTC
    | M 3.8 |
    22 km (13.7 mi) depth
    |
    24 km (15 mi) distance
    | RSN | Details
  • Show all

Earlier earthquakes in the same area

Strong mag. 6.1 earthquake - Costa Rica on Friday, 17 August 2018 at 23:22 (GMT)

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