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Major mag. 7.6 earthquake - Costa Rica on Monday, 22 April 1991

Major mag. 7.6 earthquake  - Costa Rica on Monday, 22 April 1991
Date & time: Monday, 22 April 1991 21:56 UTC
Magnitude: 7.6
Depth: 10.0 km
Epicenter latitude / longitude: 9.685°N / 83.073°W (Costa Rica)
Nearest volcano: Durika (43 km / 27 mi)
Nearby towns and cities:
26 km (16 mi) SW of Cahuita (pop: 600)
34 km (21 mi) S of Limón (pop: 63,100)
50 km (31 mi) SE of Matina (pop: 2,300)
52 km (33 mi) NW of Sixaola (pop: 1,800)
114 km (71 mi) SE of San José (pop: 335,000)
157 km (97 mi) NW of David (pop: 82,000)
Primary data source: USGS
Estimated released energy: 1.6 x 1016 joules (4402 gigawatt hours, equivalent to 3.8 x 106 tons of TNT or 236.7 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
Mon, 22 Apr 21:56 UTCM 7.6 / 10 km Costa RicaUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!

Aftershocks of the 7.6 quake: Costa Rica, 22 Apr 1991 21:56

More info
Recorded aftershocks, latest first (21 quakes):
  • 18 May 1992 23:19 UTC
    | M 6.3 |
    17.8 km (11.1 mi) depth
    |
    263 km (163 mi) distance
    | USGS | Strong mag. 6.3 earthquake - South of Panama on Monday, 18 May 1992
  • 07 Mar 1992 01:53 UTC
    | M 6.6 |
    78.9 km (49 mi) depth
    |
    149 km (93 mi) distance
    | USGS | Strong mag. 6.6 earthquake - Costa Rica on Saturday, 7 March 1992
  • 21 Dec 1991 22:02 UTC
    | M 5.1 |
    24.3 km (15.1 mi) depth
    |
    158 km (98 mi) distance
    | USGS | Details
  • 20 Dec 1991 18:10 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    60 km (37 mi) distance
    | USGS | Details
  • 10 Nov 1991 08:20 UTC
    | M 5.4 |
    37.2 km (23.1 mi) depth
    |
    41 km (25 mi) distance
    | USGS | Details
  • 23 Sep 1991 15:16 UTC
    | M 5.0 |
    10 km (6.2 mi) depth
    |
    180 km (112 mi) distance
    | USGS | Details
  • 13 Sep 1991 01:34 UTC
    | M 5.2 |
    54.2 km (33.7 mi) depth
    |
    252 km (156 mi) distance
    | USGS | Details
  • 09 Aug 1991 09:33 UTC
    | M 5.2 |
    5 km (3.1 mi) depth
    |
    108 km (67 mi) distance
    | USGS | Details
  • 27 May 1991 18:40 UTC
    | M 5.7 |
    10 km (6.2 mi) depth
    |
    47 km (29 mi) distance
    | USGS | Details
  • 15 May 1991 14:34 UTC
    | M 5.2 |
    32.9 km (20.4 mi) depth
    |
    105 km (65 mi) distance
    | USGS | Details
  • 04 May 1991 03:42 UTC
    | M 6.2 |
    10 km (6.2 mi) depth
    |
    74 km (46 mi) distance
    | USGS | Strong mag. 6.2 earthquake - Panama-Costa Rica Border Region on Saturday, 4 May 1991
  • 27 Apr 1991 05:42 UTC
    | M 5.3 |
    10 km (6.2 mi) depth
    |
    66 km (41 mi) distance
    | USGS | Details
  • 24 Apr 1991 19:13 UTC
    | M 6.2 |
    12.7 km (7.9 mi) depth
    |
    49 km (30 mi) distance
    | USGS | Strong mag. 6.2 earthquake - Costa Rica on Wednesday, 24 April 1991
  • 23 Apr 1991 18:56 UTC
    | M 5.2 |
    10 km (6.2 mi) depth
    |
    46 km (29 mi) distance
    | USGS | Details
  • 23 Apr 1991 08:32 UTC
    | M 5.0 |
    10 km (6.2 mi) depth
    |
    31 km (19 mi) distance
    | USGS | Details
  • 23 Apr 1991 05:37 UTC
    | M 5.2 |
    10 km (6.2 mi) depth
    |
    41 km (25 mi) distance
    | USGS | Details
  • Show all

Earlier earthquakes in the same area

Major mag. 7.6 earthquake - Costa Rica on Monday, 22 April 1991
 

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