Very strong mag. 6.8 earthquake - Tigdos Island, 30 km north of Bislig City, Philippines, on Sunday, November 7, 1976 at 17:09 (GMT)

Very strong mag. 6.8 earthquake - Tigdos Island, 30 km north of Bislig City, Philippines, on Sunday, November 7, 1976 at 17:09 (GMT)

Very strong magnitude 6.8 earthquake at 60 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Nov 7, 1976 17:09:06 UTC
Magnitude: 6.8
Depth: 60.0 km
Epicenter latitude / longitude: 8.478°N / 126.375°E (Province of Surigao del Sur, Caraga, Philippines)
Antipode: 8.478°S / 53.625°W
Nearest volcano: Leonard Range (127 km / 79 mi)
Nearby towns and cities:
13 km (8 mi) NNE of Hinatuan (pop: 10,100) --> See nearby quakes!
30 km (19 mi) NNE of Bislig City (pop: 67,600) --> See nearby quakes!
47 km (29 mi) E of San Francisco (Agusan del Sur) (pop: 18,500) --> See nearby quakes!
53 km (33 mi) ESE of Bah-Bah (Agusan del Sur) (pop: 28,600) --> See nearby quakes!
55 km (34 mi) NE of Bunawan (Agusan del Sur) (pop: 15,500) --> See nearby quakes!
70 km (43 mi) SSE of Tandag (pop: 29,000) --> See nearby quakes!
74 km (46 mi) ESE of Bayugan (pop: 40,600) --> See nearby quakes!
105 km (65 mi) ESE of Butuan (pop: 309,700) --> See nearby quakes!
177 km (110 mi) NNE of Davao City (pop: 1,212,500) --> See nearby quakes!
900 km (559 mi) SE of Manila (National Capital Region) (pop: 1,600,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1 x 1015 joules (278 gigawatt hours, equivalent to 2.4 x 105 tons of TNT or 14.9 atomic bombs!) More info
Show interactive Map
[smaller] [bigger]
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!
If you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable to earthquake science, seismic 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.
Mag.DepthLocationSource
6.860 kmMindanao, PhilippinesUSGS
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!
Volcanoes & Earthquakes - new app for Android

Aftershocks

More info

Recorded aftershocks, latest first (23 quakes)

  • 30 Apr 1977 18:40 UTC
    | M 5.2 |
    77 km (47.8 mi) depth
    |
    99 km (61 mi) distance
    | USGS | Details
  • 28 Apr 1977 04:23 UTC
    | M 4.5 |
    73 km (45.4 mi) depth
    |
    36 km (23 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14005 km (8702 mi) distance
    | | Details
  • 21 Apr 1977 12:49 UTC
    | M 5.4 |
    33 km (20.5 mi) depth
    |
    4 km (3 mi) distance
    | USGS | Details
  • 30 Mar 1977 10:02 UTC
    | M 4.9 |
    112 km (69.6 mi) depth
    |
    102 km (64 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14005 km (8702 mi) distance
    | | Details
  • 02 Mar 1977 14:35 UTC
    | M 5.2 |
    84 km (52.2 mi) depth
    |
    47 km (29 mi) distance
    | USGS | Details
  • 01 Mar 1977 09:10 UTC
    | M 4.9 |
    121 km (75.2 mi) depth
    |
    22 km (13 mi) distance
    | USGS | Details
  • 28 Feb 1977 01:50 UTC
    | M 5.7 |
    64 km (39.8 mi) depth
    |
    87 km (54 mi) distance
    | USGS | Details
  • 15 Feb 1977 21:47 UTC
    | M 5.3 |
    74 km (46 mi) depth
    |
    56 km (35 mi) distance
    | USGS | Details
  • 19 Jan 1977 17:09 UTC
    | M 5.2 |
    94 km (58.4 mi) depth
    |
    78 km (48 mi) distance
    | USGS | Details
  • 01 Jan 1977 10:52 UTC
    | M 5.0 |
    53 km (32.9 mi) depth
    |
    8 km (5 mi) distance
    | USGS | Details
  • 21 Dec 1976 04:17 UTC
    | M 5.2 |
    70 km (43.5 mi) depth
    |
    56 km (35 mi) distance
    | USGS | Details
  • 02 Dec 1976 21:44 UTC
    | M 4.6 |
    47 km (29.2 mi) depth
    |
    31 km (19 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14005 km (8702 mi) distance
    | | Details
  • 11 Nov 1976 14:23 UTC
    | M 4.8 |
    104 km (64.6 mi) depth
    |
    35 km (22 mi) distance
    | USGS | Details
  • Show all

Earlier earthquakes in the same area

Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version
Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Improved multilanguage support
  • Tsunami alerts
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Detailed quake stats
  • Additional seismic data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.