M6.6 earthquake - 5km NNE of Hojancha, Costa Rica, Wednesday, 24 October 2012 at 00:45 (GMT)

Very strong mag. 6.5 earthquake - 15 km east of Nicoya, Provincia de Guanacaste, Costa Rica, on Tue, 23 Oct 2012 18:45 (America/Costa_Rica)

Very strong mag. 6.5 earthquake - 15 km east of Nicoya, Provincia de Guanacaste, Costa Rica, on Tue, 23 Oct 2012 18:45 (America/Costa_Rica)

Very strong magnitude 6.5 earthquake at 20 km depth

24 Oct 01:00 UTC: First to report: USGS after 15 minutes.
Date & time: Oct 24, 2012 00:45:34 UTC
Local time at epicenter: Tue, 23 Oct 2012 18:45 (America/Costa_Rica)
Magnitude: 6.5
Depth: 20.1 km
Epicenter latitude / longitude: 10.1211°N / 85.3137°W (Nicoya, Provincia de Guanacaste, Costa Rica)
Antipode: 10.121°S / 94.686°E
Nearest volcano: Tenorio (76 km / 47 mi)
Nearby towns and cities:
13 km (8 mi) ENE of Hojancha (Guanacaste) (pop: 1,820) --> See nearby quakes!
15 km (10 mi) ESE of Nicoya (Guanacaste) (pop: 15,300) --> See nearby quakes!
34 km (21 mi) ESE of Santa Cruz (Guanacaste) (pop: 12,300) --> See nearby quakes!
42 km (26 mi) SW of Canas (Cañas, Guanacaste) (pop: 20,300) --> See nearby quakes!
59 km (37 mi) SSE of Liberia (Guanacaste) (pop: 45,400) --> See nearby quakes!
61 km (38 mi) WNW of Chacarita (Puntarenas) (pop: 26,400) --> See nearby quakes!
94 km (59 mi) S of San Jose (Upala, Alajuela) (pop: 31,400) --> See nearby quakes!
136 km (85 mi) W of San Jose (San José) (pop: 335,000) --> See nearby quakes!
246 km (153 mi) SSE of Managua (Nicaragua) (pop: 973,100) --> See nearby quakes!
250 km (155 mi) W of Puerto Limon (Limón) (pop: 63,100) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 atomic bombs!) 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.
Mag.DepthLocationSource
6.520 km13km ENE of Hojancha, Costa RicaUSGS
5.560 km COSTA RICAEMSC
6.315 kmNicaraguaINETER
6.422 kmCosta RicaGFZ
6.520 kmCosta RicaGeoAu
shake map
(shakemap: USGS)

User reports for this quake (9)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Boca de Sábalos, Nicaragua / Strong shaking (MMI VI) : Jagged, jerking motion, loud noise in house structure.  
malpais, costa rica / Moderate shaking (MMI V)
palmares, aljuela, Costa Rica / Light shaking (MMI IV) : The dog did not seem to notice. We were watching a movie and could feel the couch begin to sway. Nothing like the quake last month.  
arenal / Light shaking (MMI IV)
arenal / Light shaking (MMI IV)
arenal / Light shaking (MMI IV)
arenal / Light shaking (MMI IV)
Managua, Nicaragua / Very weak shaking (MMI II) : Long period wave felt.   
(Costa Rica, 143 km E of epicenter) : Some objects fell to the floor. Felt dizzy and could not exit the house. Power loss near epicenter. Complete cellphone loss throughout the country. (reported through EMSC)  
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