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Very strong mag. 6.7 earthquake - 23 km south of Pulau Baronto Island, Indonesia, on Tuesday, March 15, 1983 at 19:58 GMT

Very strong mag. 6.7 earthquake - 23 km south of Pulau Baronto Island, Indonesia, on Tuesday, March 15, 1983 at 19:58 GMT Very strong mag. 6.7 earthquake - 23 km south of Pulau Baronto Island, Indonesia, on Tuesday, March 15, 1983 at 19:58 GMT

Very strong magnitude 6.7 earthquake at 41 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.

Earthquake details

Date & timeMar 15, 1983 19:58:30 UTC
Local time at epicenter
StatusConfirmed
Magnitude6.7
Depth41.0 km
Epicenter latitude / longitude5.346°N / 126.566°E (Philippine Sea, Indonesia)
Antipode5.346°S / 53.434°W
Shaking intensityStrong shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoBalut (132 km / 82 mi)
Nearby towns and cities157 km (98 mi) ESE of Malapatan (Sarangani, Philippines) (pop: 19,400) | Show on map | Quakes nearby
159 km (99 mi) SE of Malita (Philippines) (pop: 41,100) | Show on map | Quakes nearby
160 km (99 mi) ESE of Glan (Sarangani, Philippines) (pop: 24,300) | Show on map | Quakes nearby
164 km (102 mi) ESE of Alabel (Philippines) (pop: 43,300) | Show on map | Quakes nearby
176 km (109 mi) SE of Maluñgun (Philippines) (pop: 52,200) | Show on map | Quakes nearby
176 km (110 mi) ESE of General Santos City (Philippines) (pop: 679,600) | Show on map | Quakes nearby
181 km (112 mi) SE of Santa Maria (Philippines) (pop: 16,800) | Show on map | Quakes nearby
183 km (114 mi) SSE of Mati (Philippines) (pop: 105,900) | Show on map | Quakes nearby
183 km (114 mi) SSE of Lupon (Davao Oriental, Philippines) (pop: 27,200) | Show on map | Quakes nearby
193 km (120 mi) ESE of Polomolok (Philippines) (pop: 64,000) | Show on map | Quakes nearby
Estimated seismic energy released7.1 x 1014 joules (197 gigawatt hours, equivalent to 1.7 x 105 tons of TNT or 10.6 atomic bombs!) | about seismic energy
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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
6.741 kmMindanao, Philippines (Indonesia)USGS
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.
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Aftershocks

[More info]

Recorded aftershocks, latest first (23 quakes)

Date and timeMag
Depth
LocationDetails
Sep 10, 1983 10:43
39 years ago
5.0

147 km
32 km SW of Sigaboy Island, Province of Davao Oriental, PhilippinesMore
Aug 24, 1983 07:03
39 years ago
4.6

33 km
82 km SE of Mati, Province of Davao Oriental, PhilippinesMore
Jul 29, 1983 20:25
39 years ago
5.2

53 km
Pulau Baronto, Indonesia, 171 km SE of General Santos City, PhilippinesMore
Jul 20, 1983 22:57
39 years ago
5.7

43 km
175 km SE of Mati, Province of Davao Oriental, PhilippinesMore
Jul 19, 1983 10:50
39 years ago
4.5

84 km
Philippines, 30 km W of Pulau Baronto Island, IndonesiaMore
Jul 18, 1983 14:32
39 years ago
4.3

33 km
42 km S of Olanivan Island, Province of Davao del Sur, PhilippinesMore
Jul 17, 1983 05:22
39 years ago
5.2

50 km
20 km SW of Pulau Baronto Island, IndonesiaMore
Jul 16, 1983 08:56
39 years ago
4.7

33 km
Pulau Mianggas, 155 km S of Mati, Province of Davao Oriental, PhilippinesMore
Jul 16, 1983 02:32
39 years ago
5.2

45 km
Pulau Baronto, 149 km SE of Alabel, Sarangani, Soccsksargen, PhilippinesMore
Jul 15, 1983 12:22
39 years ago
4.7

33 km
Pulau Baronto, 161 km S of Mati, Province of Davao Oriental, PhilippinesMore
Jul 15, 1983 10:45
39 years ago
5.7

49 km
Pulau Baronto, 143 km SE of Malita, Davao Occidental, PhilippinesMore
Jul 14, 1983 19:47
39 years ago
6.3

43 km
Pulau Baronto, 142 km SE of Alabel, Sarangani, Soccsksargen, PhilippinesMore
Jul 14, 1983 19:45
39 years ago
4.7

33 km
Pulau Mianggas, 162 km S of Mati, Province of Davao Oriental, PhilippinesMore
Jul 4, 1983 22:00
39 years ago
5.1

98 km
Pulau Nusa, 391 km NE of Manado, North Sulawesi, IndonesiaMore
Jun 24, 1983 18:55
39 years ago
5.2

51 km
95 km S of Alabel, Sarangani, Soccsksargen, PhilippinesMore
Jun 16, 1983 00:21
39 years ago
4.4

33 km
83 km NE of Pulau Garat Island, North Sulawesi, IndonesiaMore
Jun 15, 1983 07:33
39 years ago
5.2

54 km
83 km NE of Pulau Garat Island, North Sulawesi, IndonesiaMore
May 10, 1983 20:50
39 years ago
4.9

96 km
102 km SE of Mati, Province of Davao Oriental, PhilippinesMore
Apr 22, 1983 07:51
39 years ago
5.6

68 km
120 km SE of Mati, Province of Davao Oriental, PhilippinesMore
Apr 8, 1983 15:15
39 years ago
4.8

70 km
65 km E of Olanivan Island, Province of Davao del Sur, PhilippinesMore
Apr 5, 1983 07:40
39 years ago
5.1

62 km
Philippines, 26 km SW of Pulau Baronto Island, IndonesiaMore
Mar 24, 1983 02:09
39 years ago
4.4

67 km
Philippines, 25 km E of Pulau Mianggas Island, North Sulawesi, IndonesiaMore
Mar 15, 1983 20:31
39 years ago
4.8

65 km
Pulau Mianggas, 163 km S of Mati, Province of Davao Oriental, PhilippinesMore

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