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
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Major magnitude 7.6 earthquake at 25 km depth
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
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. | Depth | Location | Source |
| 7.6 | 25 km | Luzon, Philippines | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Aftershocks
[More info]
Recorded aftershocks, latest first (18 quakes)
Date and time | Mag Depth | Location | Details |
| Jul 10, 1970 21:06 52 years ago | 5.8 85 km | 33 km SW of Nasugbu, Batangas, Calabarzon, Philippines | More |
| May 1, 1970 03:22 52 years ago | 5.9 32 km | 82 km E of Cabanatuan City, Province of Nueva Ecija, Central Luzon, Philippines | More |
| Apr 15, 1970 13:14 52 years ago | 6.2 25 km | 85 km NE of Polillo Island, Quezon, Calabarzon, Philippines | More |
| Apr 12, 1970 05:18 52 years ago | 5.6 23 km | 65 km NE of Polillo Island, Quezon, Calabarzon, Philippines | More |
| Apr 12, 1970 04:16 52 years ago | 5.7 19 km | 49 km N of Polillo Island, Quezon, Calabarzon, Philippines | More |
| Apr 12, 1970 04:01 52 years ago | 6.9 23 km | 36 km N of Polillo Island, Quezon, Calabarzon, Philippines | More |
| Apr 8, 1970 21:23 52 years ago | 6.5 25 km | 81 km E of Cabanatuan City, Province of Nueva Ecija, Central Luzon, Philippines | More |
| Apr 7, 1970 06:34 52 years ago | 5.8 25 km | 91 km E of Cabanatuan City, Province of Nueva Ecija, Central Luzon, Philippines | More |
| Apr 7, 1970 06:11 52 years ago | 5.6 25 km | 97 km E of Cabanatuan City, Province of Nueva Ecija, Central Luzon, Philippines | More |
| Apr 7, 1970 05:34 52 years ago | 7.4 25 km | 79 km NE of Cabanatuan City, Province of Nueva Ecija, Central Luzon, Philippines | More |
| Feb 26, 1970 15:50 52 years ago | 5.8 35 km | 67 km W of Batangas, Calabarzon, Philippines | More |
| Oct 6, 1969 12:48 53 years ago | 5.8 45 km | 6.1 km SW of Poblacion, San Felipe, Philippines | More |
| Jun 24, 1969 10:58 53 years ago | 5.9 15 km | 20 km S of Naga City, Province of Camarines Sur, Bicol, Philippines | More |
| Nov 22, 1968 11:38 54 years ago | 5.6 10 km | 9.7 km S of Pagsañgahan, Quezon, Calabarzon, Philippines | More |
| Nov 22, 1968 08:59 54 years ago | 6.1 35 km | 63 km E of Maddela, Province of Quirino, Cagayan Valley, Philippines | More |
| Aug 28, 1968 20:42 54 years ago | 6.4 20 km | 61 km SE of Suklayin, Province of Aurora, Central Luzon, Philippines | More |
| Aug 14, 1968 07:56 54 years ago | 5.7 23 km | 49 km NE of Patnanungan, Quezon, Calabarzon, Philippines | More |
| Aug 3, 1968 06:25 54 years ago | 6.4 25 km | Province of Aurora, Central Luzon, 66 km SE of Alicia, Philippines | More |
Earlier earthquakes in the same area
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