Help Ukraine

Very strong mag. 6.9 earthquake - 55 km south of Pagadian City, Philippines, on Tuesday, December 12, 1978 at 11:44 GMT

Very strong mag. 6.9 earthquake - 55 km south of Pagadian City, Philippines, on Tuesday, December 12, 1978 at 11:44 GMT Very strong mag. 6.9 earthquake - 55 km south of Pagadian City, Philippines, on Tuesday, December 12, 1978 at 11:44 GMT

Very strong magnitude 6.9 earthquake at 33 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Dec 12, 1978 11:44:16 UTC
Magnitude: 6.9
Depth: 33.0 km
Epicenter latitude / longitude: 7.33°N / 123.492°E (Celebes Sea, Philippines)
Antipode: 7.33°S / 56.508°W
Nearest volcano: Imbing (48 km / 30 mi)
Nearby towns and cities:
18 km (11 mi) SSE of Tabina (Zamboanga del Sur) (pop: 5,070) --> See nearby quakes!
55 km (34 mi) S of Muricay (pop: 132,100) --> See nearby quakes!
55 km (34 mi) S of Pagadian City (pop: 186,900) --> See nearby quakes!
84 km (52 mi) S of Molave (Zamboanga del Sur) (pop: 21,100) --> See nearby quakes!
84 km (52 mi) W of Cotabato City (pop: 179,400) --> See nearby quakes!
86 km (53 mi) W of Parang (pop: 44,900) --> See nearby quakes!
86 km (54 mi) SSW of Tangub (Misamis Occidental) (pop: 29,700) --> See nearby quakes!
99 km (61 mi) SSW of Ozamiz City (pop: 93,100) --> See nearby quakes!
105 km (66 mi) W of Budta (pop: 1,273,700) --> See nearby quakes!
854 km (531 mi) SSE of Manila (pop: 1,600,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.4 x 1015 joules (392 gigawatt hours, equivalent to 3.4 x 105 tons of TNT or 21.1 atomic bombs!) | about seismic energy
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
6.933 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.
Volcanoes & Earthquakes - new app for Android

Aftershocks

[More info]

Recorded aftershocks, latest first (9 quakes)

Date and timeMag
Depth
LocationDetails
Apr 1, 1979 13:13
43 years ago
5.4

40 km
65 km S of Pagadian City, Zamboanga del Sur, Zamboanga Peninsula, PhilippinesMore
Apr 1, 1979 08:13
43 years ago
5.0

33 km
82 km S of Pagadian City, Zamboanga del Sur, Zamboanga Peninsula, PhilippinesMore
Feb 15, 1979 21:54
43 years ago
4.3

33 km
Mindanao, PhilippinesMore
Feb 2, 1979 11:54
43 years ago
5.1

49 km
Province of Sultan Kudarat, 64 km W of Koronadal, PhilippinesMore
Dec 20, 1978 21:25
43 years ago
4.2

52 km
100 km SW of Cotabato City, PH.14.B8, Mindanao Musulman, PhilippinesMore
Dec 20, 1978 20:41
43 years ago
5.1

44 km
87 km SW of Cotabato City, PH.14.B8, Mindanao Musulman, PhilippinesMore
Dec 14, 1978 18:25
43 years ago
4.8

43 km
121 km SW of Cotabato City, PH.14.B8, Mindanao Musulman, PhilippinesMore
Dec 12, 1978 14:48
43 years ago
4.4

33 km
Sagayaran Island, 39 km S of Pagadian City, PhilippinesMore
Dec 12, 1978 12:20
43 years ago
4.8

33 km
83 km S of Pagadian City, Zamboanga del Sur, Zamboanga Peninsula, PhilippinesMore

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.