| Magnitude | 6.9 |
| Alert | Severe |
| Depth | 33.0 km |
| Coordinates | 16.882, 122.361 |
| UTC time | 1977-07-21 13:45:54.000 |
Earthquake details
Thursday, July 21, 1977 Earthquake
The earthquake hit Philippines on Thursday, July 21, 1977 at 13:45 UTC with a magnitude of 6.9. The closest known location in the current dataset is Ilagan (Philippines - PH), about 58.3 km away. The epicenter is located at longitude 122.361 and latitude 16.882.
| Location | Santiago |
| Country | Philippines (PH) |
| Severity | Severe |
Earthquake map 1977-07-21
Closest countries
The 12 closest cities near the epicenter.
| Ilagan | 58.3 km |
| Aglipay | 88.0 km |
| Ramon | 88.7 km |
| Santiago | 89.2 km |
| Tuguegarao City | 106.2 km |
| Solana | 111.5 km |
| Solano | 132.1 km |
| Bayombong | 136.7 km |
| Dupax Del Norte | 148.3 km |
| Aparri | 181.1 km |
| Bongabon | 190.4 km |
| La Trinidad | 195.0 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
|
M 4.5
Santiago
Philippines · 2026-04-20 21:07 UTC
|
100.7 km |
|
M 4.1
Santiago
Philippines · 2025-11-28 10:16 UTC
|
56.5 km |
|
M 4.4
Aglipay
Philippines · 2025-05-24 11:07 UTC
|
86.7 km |
|
M 4.4
Santiago
Philippines · 2025-04-30 22:15 UTC
|
56.3 km |
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