| Magnitude | 5.5 |
| Alert | Strong |
| Depth | 10.0 km |
| Coordinates | 28.533, -43.551 |
| UTC time | 1991-10-17 21:02:51.280 |
Earthquake details
Thursday, October 17, 1991 Earthquake
The earthquake hit northern Mid-Atlantic Ridge on Thursday, October 17, 1991 at 21:02 UTC with a magnitude of 5.5. The closest known location in the current dataset is St. John's, about 2261.8 km away. The epicenter is located at longitude -43.551 and latitude 28.533.
| Location | northern Mid-Atlantic Ridge |
| Country | northern Mid-Atlantic Ridge |
| Severity | Strong |
Earthquake map 1991-10-17
Closest countries
The 12 closest cities near the epicenter.
| St. John's | 2261.8 km |
| Les Abymes | 2292.0 km |
| Baie-Mahault | 2299.0 km |
| Mindelo | 2300.5 km |
| Le Lamentin | 2374.2 km |
| Fort Royal | 2380.7 km |
| Bridgetown | 2391.1 km |
| Sydney | 2440.1 km |
| St Croix | 2474.9 km |
| Halifax | 2520.3 km |
| Fajardo | 2521.1 km |
| Dartmouth | 2522.3 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.3
northern Mid-Atlantic Ridge
Unknown · 2025-10-03 07:12 UTC
35.7 km
M 4.9
northern Mid-Atlantic Ridge
Unknown · 2025-10-03 04:23 UTC
48.2 km
M 5.1
northern Mid-Atlantic Ridge
Unknown · 2025-10-03 04:17 UTC
38.0 km
M 4.3
northern Mid-Atlantic Ridge
Unknown · 2025-04-01 18:13 UTC
48.4 km
M 4.6
northern Mid-Atlantic Ridge
Unknown · 2025-02-20 13:12 UTC
58.3 km
M 4.4
northern Mid-Atlantic Ridge
Unknown · 2024-07-23 02:56 UTC
24.1 km
M 4.7
northern Mid-Atlantic Ridge
Unknown · 2024-03-29 20:06 UTC
8.4 km
M 4.6
northern Mid-Atlantic Ridge
Unknown · 2024-03-22 17:31 UTC
26.7 km
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