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Major magnitude 7.6 earthquake - Province of Aurora, Central Luzon, 69 km southeast of Santiago, Philippines, on Thursday, August 1, 1968 at 20:19 GMT

Major magnitude 7.6 earthquake - Province of Aurora, Central Luzon, 69 km southeast of Santiago, Philippines, on Thursday, August 1, 1968 at 20:19 GMT

Major magnitude 7.6 earthquake at 25 km depth

Date & time: Aug 1, 1968 20:19:22 UTC
Magnitude: 7.6
Depth: 25.0 km
Epicenter latitude / longitude: 16.316°N / 122.067°E (Province of Aurora, Central Luzon, Philippines)
Antipode: 16.316°S / 57.933°W
Nearest volcano: Amorong (145 km / 90 mi)
Nearby towns and cities:
40 km (25 mi) ESE of Masaya Sur (Isabela, Valle del Cagayán) (pop: 5,520) --> See nearby quakes!
65 km (40 mi) SE of Alicia (Isabela, Cagayan Valley) (pop: 24,700) --> See nearby quakes!
69 km (43 mi) SE of Santiago (Cagayan Valley) (pop: 108,400) --> See nearby quakes!
77 km (48 mi) SE of Ramon (Cagayan Valley) (pop: 36,300) --> See nearby quakes!
95 km (59 mi) SSE of Ilagan (Cagayan Valley) (pop: 72,400) --> See nearby quakes!
97 km (60 mi) ESE of Solano (Nueva Vizcaya, Cagayan Valley) (pop: 36,200) --> See nearby quakes!
100 km (62 mi) E of Bayombong (Cagayan Valley) (pop: 48,200) --> See nearby quakes!
206 km (128 mi) NE of San Fernando City (pop: 251,200) --> See nearby quakes!
215 km (134 mi) NNE of Quezon City (National Capital Region) (pop: 2,761,700) --> See nearby quakes!
223 km (139 mi) NNE of Manila (National Capital Region) (pop: 1,600,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
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!) | 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
7.625 kmLuzon, 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.
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Aftershocks

[More info]

Recorded aftershocks, latest first (18 quakes)

Date and timeMag
Depth
LocationDetails
Jul 10, 1970 21:06
52 years ago
5.8

85 km
33 km SW of Nasugbu, Batangas, Calabarzon, PhilippinesMore
May 1, 1970 03:22
52 years ago
5.9

32 km
82 km E of Cabanatuan City, Province of Nueva Ecija, Central Luzon, PhilippinesMore
Apr 15, 1970 13:14
52 years ago
6.2

25 km
85 km NE of Polillo Island, Quezon, Calabarzon, PhilippinesMore
Apr 12, 1970 05:18
52 years ago
5.6

23 km
65 km NE of Polillo Island, Quezon, Calabarzon, PhilippinesMore
Apr 12, 1970 04:16
52 years ago
5.7

19 km
49 km N of Polillo Island, Quezon, Calabarzon, PhilippinesMore
Apr 12, 1970 04:01
52 years ago
6.9

23 km
36 km N of Polillo Island, Quezon, Calabarzon, PhilippinesMore
Apr 8, 1970 21:23
52 years ago
6.5

25 km
81 km E of Cabanatuan City, Province of Nueva Ecija, Central Luzon, PhilippinesMore
Apr 7, 1970 06:34
52 years ago
5.8

25 km
91 km E of Cabanatuan City, Province of Nueva Ecija, Central Luzon, PhilippinesMore
Apr 7, 1970 06:11
52 years ago
5.6

25 km
97 km E of Cabanatuan City, Province of Nueva Ecija, Central Luzon, PhilippinesMore
Apr 7, 1970 05:34
52 years ago
7.4

25 km
79 km NE of Cabanatuan City, Province of Nueva Ecija, Central Luzon, PhilippinesMore
Feb 26, 1970 15:50
52 years ago
5.8

35 km
67 km W of Batangas, Calabarzon, PhilippinesMore
Oct 6, 1969 12:48
53 years ago
5.8

45 km
6.1 km SW of Poblacion, San Felipe, PhilippinesMore
Jun 24, 1969 10:58
53 years ago
5.9

15 km
20 km S of Naga City, Province of Camarines Sur, Bicol, PhilippinesMore
Nov 22, 1968 11:38
54 years ago
5.6

10 km
9.7 km S of Pagsañgahan, Quezon, Calabarzon, PhilippinesMore
Nov 22, 1968 08:59
54 years ago
6.1

35 km
63 km E of Maddela, Province of Quirino, Cagayan Valley, PhilippinesMore
Aug 28, 1968 20:42
54 years ago
6.4

20 km
61 km SE of Suklayin, Province of Aurora, Central Luzon, PhilippinesMore
Aug 14, 1968 07:56
54 years ago
5.7

23 km
49 km NE of Patnanungan, Quezon, Calabarzon, PhilippinesMore
Aug 3, 1968 06:25
54 years ago
6.4

25 km
Province of Aurora, Central Luzon, 66 km SE of Alicia, PhilippinesMore

Earlier earthquakes in the same area

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