QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us2000ai4f
USGS us2000ai4f

8 Sept 2017, 16:20

157 km SSW of Lotofag?, Samoa

A magnitude 5 mb earthquake at 10 km depth.

Depth10 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated7 December 2017Latest timestamp stored in this record

Published location

Where is 157 km SSW of Lotofag?, Samoa?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

-15.280500, -172.452900

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Map data © OpenStreetMap contributors

What the numbers mean

Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.

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Nearby events with a similar magnitude

M 5

Samoa Islands region

M 5

185 km ESE of Hihifo, Tonga

M 5

113 km SSW of Lotofag?, Samoa

M 5

181 km ESE of Hihifo, Tonga

M 5

249 km ENE of Neiafu, Tonga

M 5

205 km SE of Hihifo, Tonga

Catalog fields and provenance
Event ID
us2000ai4f
Coordinates
-15.2805, -172.4529
Network
us
Significance
385