Very strong mag. 6.3 earthquake - 55 km southwest of Tumaco, Departamento de Nariño, Colombia, on Saturday, February 1, 1958 at 20:45 GMT
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Very strong magnitude 6.3 earthquake at 25 km depth
Earthquake details
| Date & time | Feb 1, 1958 20:45:49 UTC |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 6.3 |
| Depth | 25.0 km |
| Epicenter latitude / longitude | 1.446°N / 79.146°W  (North Pacific Ocean, Colombia) |
| Antipode | 1.446°S / 100.854°E |
| Shaking intensity | Strong shaking near epicenter |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Pilavo (134 km / 83 mi) |
| Nearby towns and cities | 28 km (18 mi) NW of Valdez (Eloy Alfaro, Ecuador) (pop: 11,400) | Show on map | Quakes nearby 39 km (24 mi) WNW of San Lorenzo de Esmeraldas (San Lorenzo, Ecuador) (pop: 20,200) | Show on map | Quakes nearby 55 km (34 mi) SW of Tumaco (pop: 86,700) | Show on map | Quakes nearby 85 km (53 mi) SW of Pizarro (pop: 6,110) | Show on map | Quakes nearby 163 km (101 mi) SW of El Charco (pop: 28,700) | Show on map | Quakes nearby 174 km (108 mi) WNW of Tuquerres (Túquerres) (pop: 20,200) | Show on map | Quakes nearby 199 km (124 mi) NNW of Quito (Ecuador) (pop: 1,399,800) | Show on map | Quakes nearby 209 km (130 mi) W of Pasto (pop: 382,200) | Show on map | Quakes nearby 366 km (227 mi) SW of Santiago de Cali (pop: 2,392,900) | Show on map | Quakes nearby 663 km (412 mi) WSW of Bogota (pop: 7,674,400) | Show on map | Quakes nearby |
| Estimated seismic energy released | 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 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 |
| 6.3 | 25 km | near the coast of Ecuador (Colombia) | 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 (3 quakes)
Date and time | Mag Depth | Location | Details |
| Apr 15, 1958 01:30 64 years ago | 6.1 25 km | 10 km SE of Esmeraldas, Ecuador | More |
| Apr 14, 1958 21:32 64 years ago | 6.8 25 km | Rio Verde, 31 km SE of Esmeraldas, Ecuador | More |
| Apr 3, 1958 08:25 64 years ago | 5.7 25 km | 51 km N of Esmeraldas, Ecuador | More |
Earlier earthquakes in the same area
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