Moderate mag. 5.1 earthquake - 7.9 km northwest of Nicoya, Provincia de Guanacaste, Costa Rica, on Friday, 1 September 2017 at 07:42 (GMT)

Moderate mag. 5.1 earthquake - 7.9 km northwest of Nicoya, Provincia de Guanacaste, Costa Rica, on Friday, 1 September 2017 at 07:42 (GMT)

Moderate magnitude 5.1 earthquake at 45 km depth

1 Sep 07:50 UTC: First to report: GFZ after 8 minutes.
Date & time: 1 Sep 2017 07:42:47 UTC
Magnitude: 5.1
Depth: 45.0 km
Epicenter latitude / longitude: 10.21°N / 85.49°W (Nicoya, Provincia de Guanacaste, Costa Rica)
Nearest volcano: Miravalles (70 km / 43 mi)
Nearby towns and cities:
8 km (5 mi) NNW of Nicoya (Guanacaste) (pop: 15,300) --> See nearby quakes!
12 km (7 mi) ESE of Santa Cruz (Guanacaste) (pop: 12,300) --> See nearby quakes!
48 km (30 mi) S of Liberia (Guanacaste) (pop: 45,400) --> See nearby quakes!
49 km (31 mi) WSW of Canas (Cañas, Guanacaste) (pop: 20,300) --> See nearby quakes!
82 km (51 mi) WNW of Chacarita (Puntarenas) (pop: 26,400) --> See nearby quakes!
91 km (57 mi) SSW of San José (Upala, Alajuela) (pop: 31,400) --> See nearby quakes!
94 km (58 mi) WNW of Esparza (Espíritu Santo, Puntarenas) (pop: 15,600) --> See nearby quakes!
157 km (98 mi) W of San Jose (San José) (pop: 335,000) --> See nearby quakes!
229 km (143 mi) SSE of Managua (Nicaragua) (pop: 973,100) --> See nearby quakes!
270 km (168 mi) W of Puerto Limon (Limón) (pop: 63,100) --> See nearby quakes!
Primary data source: GFZ (German Research Centre for Geosciences)
Estimated released energy: 2.8 x 1012 joules (783 megawatt hours, equivalent to 674 tons of TNT) More info
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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.
MagnitudeDepthLocationSource
M 5.145 kmCosta RicaGFZ
M 5.319 km- 10km SW of Nicoya, Costa RicaUSGS
M 5.616 km17 km al Noroeste de Samara, Nicoya.RSN

User reports for this quake (38)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Heredia Costa Rica (149.6 km E of epicenter) [Map] / Moderate shaking (MMI V) : I was sleeping and i felt that something just shaked my bed, i also heard windows creak and i felt a little bit dizzy (reported through our app)
La Fortuna / Very weak shaking (MMI II) : I was based at El Silencio deal campo hotel about 5km from La Fortuna. Windows shook slightly and I heard them shake. It woke me up and lasted between 5 and 8 seconds. Easily recognisable that it was a tremor.
Santa Eulalia 5 to 10 seconds. (124 km E of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Austin, Texas (2576.8 km NNW of epicenter) [Map] / Very weak shaking (MMI II)
Los Pargos / Moderate shaking (MMI V)
Playa Flamingo, Guanacaste, Costa Rica / Light shaking (MMI IV)
Fue fuerte y se sintió en toda Costa Rica / Strong shaking (MMI VI)
Nosara / Moderate shaking (MMI V)
Portegolpe, Guanacaste / Moderate shaking (MMI V) : A bump and then shaking. Woke us up. More sustained than most.
San Jose, hotel Barcelo / Weak shaking (MMI III) : Woke Up, due to vibration. Heard door vibrating and saw hung-up television shake A bit. Coffee mugs rattled. Only lasten A few minutes.
Black Stallion ranch / Moderate shaking (MMI V) : Shook kinda strong for a while, woke us up & got me in emergency mode for a few seconds ?
40.9 km NW of epicenter [Map] / Moderate shaking (MMI V) : Strong enough to wake up me and my son. Shaking lasted about 4-5 seconds.
Nosara Huacas / Moderate shaking (MMI V) : Felt abrupt shaking for about ten seconds. Started looking for safest place in house and opened front door a little and got truck keys
Tamarindo / Strong shaking (MMI VI) : Felt rumbling for about 5-10 sec then heavy shaking for 3-5 seconds
Jaco / Light shaking (MMI IV) : Bunk beds in hostel room all swayed back and forth- not so much shaking
Samara / Light shaking (MMI IV)
Samara, Guanacaste Province, Costa Rica (294 km N of epicenter) [Map] / Moderate shaking (MMI V) : Woke us up. Bottle fell in bathroom, animals all freaked out (me too).
Cañas (50 km ENE of epicenter) [Map] / Moderate shaking (MMI V) : Me despertó (reported through our app)
Arenal Volcano (94 km ENE of epicenter) [Map] / Very strong shaking (MMI VII) : It woke myself, my sister and my husband up out of our sleep..I woke up holding on.
La Mansión de Nicoya (17.8 km SE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Corozalito, Guanacaste / Moderate shaking (MMI V) : I was awake and screamed and ran when it did not stop immediately. It was a strong shaking not rolling earthquake . My husband and son were awakened.
Samara / Light shaking (MMI IV)
89.7 km ENE of epicenter [Map] / Weak shaking (MMI III)
Riu palace, guanacaste / Light shaking (MMI IV)
Samara / Light shaking (MMI IV)
Playa potrero / Light shaking (MMI IV)
San José / Light shaking (MMI IV)
Samara Costa Rica / Moderate shaking (MMI V)
Samara / Moderate shaking (MMI V) : Woke me up felt the house and ground shaking others in the locale felt too - animals!
Grecia (131.8 km E of epicenter) [Map] / Moderate shaking (MMI V) : Woke me and my wife (reported through our app)
40.7 km NW of epicenter [Map] / Light shaking (MMI IV)
Monteverde / Weak shaking (MMI III) : Light shaking woke us up, but the windows didn't rattle and no items were jostled.
Fue fuerte y se sintió en toda Costa Rica (147.2 km E of epicenter) [Map] / Strong shaking (MMI VI) (reported through our app)
Playa Grande (41.5 km WNW of epicenter) [Map] / Light shaking (MMI IV)
Santa Teresa cobano / Light shaking (MMI IV)
Palmares, Alajuela (116.8 km E of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
riu palace sardinal / Moderate shaking (MMI V) : I woke froma deep sleep to find the hotel walks shaking hard. It was terrifying. My daughter slept through it. very scary.
Tamarindo (39.7 km WNW of epicenter) [Map] / Light shaking (MMI IV)
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