| Magnitude | 5.1 |
| Alert | Strong |
| Depth | 46.0 km |
| Coordinates | 17.212, 122.432 |
| UTC time | 1977-07-21 18:55:34.600 |
Earthquake details
Thursday, July 21, 1977 Earthquake
The earthquake hit Philippines on Thursday, July 21, 1977 at 18:55 UTC with a magnitude of 5.1. The closest known location in the current dataset is Ilagan (Philippines - PH), about 58.2 km away. The epicenter is located at longitude 122.432 and latitude 17.212.
| Location | Tuguegarao City |
| Country | Philippines (PH) |
| Severity | Strong |
Earthquake map 1977-07-21
Closest countries
The 12 closest cities near the epicenter.
| Ilagan | 58.2 km |
| Tuguegarao City | 87.7 km |
| Solana | 92.7 km |
| Ramon | 106.7 km |
| Santiago | 110.7 km |
| Aglipay | 116.2 km |
| Aparri | 152.6 km |
| Solano | 154.0 km |
| Bayombong | 159.0 km |
| Dupax Del Norte | 173.5 km |
| Tagudin | 213.8 km |
| La Trinidad | 213.8 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
|
M 4.6
Laoag
Philippines · 2025-11-22 17:18 UTC
|
179.3 km |
|
M 4.7
Tuguegarao City
Philippines · 2025-10-10 16:54 UTC
|
33.1 km |
|
M 4.7
Aparri
Philippines · 2025-08-11 02:55 UTC
|
148.0 km |
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