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M5.1 Earthquake near 162 km SSW of Merizo Village, Guam

UTC time: 2026-09-10 13:28:16 UTC Local time: —

Earthquake newsQuakeMap24

First published: 2026-09-10 13:43:05 UTC Content updated: 2026-09-12 13:53:11 UTC

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.

Magnitude

M5.1

Depth: 10.0 km
Source: USGS

162 km SSW of Merizo Village, Guam

Map

About this earthquake

On September 10, 2026 at 13:28 UTC, a magnitude M5.1 earthquake occurred near 162 km SSW of Merizo Village, Guam. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

The event was recorded by USGS.

Details

f6f2b61a99f62a59fe855dcf970b4e3b60b67391

Magnitude

M5.1

Depth

10.0 km

UTC time

2026-09-10 13:28:16 UTC

Local time

—

Country

—

Source

usgs

Coordinates

12.02650, 143.87390

Temperature

28.2°C

Depth profile

Shallow

10 km

Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Felt reports

2felt reports at EMSC / LastQuake

Voluntary reports of feeling this earthquake. The count is not an intensity measurement and is not added to USGS DYFI reports.

Data updated: Sep 10, 2026, 1:32 PM UTC · Last checked: Sep 21, 2026, 10:52 AM UTC

Source: EMSC / LastQuake

Official USGS aftershock forecast

Probability of at least one aftershock at or above the specified magnitude during the entire stated time window. This does not predict an individual earthquake.

Issued: Sep 20, 2026, 1:28 PM UTC · Last checked: Sep 21, 2026, 10:52 AM UTC

Sep 20, 2026, 2:00 PM UTC – Sep 21, 2026, 2:00 PM UTC

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	8.64 %	0–1
M ≥ 4.0	1.01 %	0–0
M ≥ 5.0	0.10 %	0–0
M ≥ 6.0	0.01 %	0–0
M ≥ 7.0	< 0.01 %	0–0

Sep 20, 2026, 2:00 PM UTC – Sep 27, 2026, 2:00 PM UTC

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	30.58 %	0–4
M ≥ 4.0	5.30 %	0–1
M ≥ 5.0	0.58 %	0–0
M ≥ 6.0	0.06 %	0–0
M ≥ 7.0	< 0.01 %	0–0

Sep 20, 2026, 2:00 PM UTC – Oct 20, 2026, 2:00 PM UTC

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	50.53 %	0–10
M ≥ 4.0	12.55 %	0–2
M ≥ 5.0	1.58 %	0–0
M ≥ 6.0	0.16 %	0–0
M ≥ 7.0	0.02 %	0–0

Sep 20, 2026, 2:00 PM UTC – Sep 20, 2027, 2:00 PM UTC

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	72.19 %	0–29
M ≥ 4.0	27.35 %	0–4
M ≥ 5.0	4.48 %	0–1
M ≥ 6.0	0.49 %	0–0
M ≥ 7.0	0.05 %	0–0

The range is the 95% forecast interval for the number of earthquakes. Magnitude thresholds and time windows overlap: do not add the values. Windows already in progress still refer to the entire stated period.

Source: USGS — Operational Aftershock Forecast

Estimated impact

3 Felt reports · max reported intensity 2

Tectonic context

Located on the Mariana Plate.

Near the boundary Mariana ↔ Pacific · about 37 km away

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation

Hagåtña187.0 kmNE1'051

GeoNames · CC BY 4.0

Volcanoes nearby

Seamount X

Distance: 137 km ·Stratovolcano ·Elevation: -1'230 m ·United States
Forecast Seamount

Distance: 153 km ·Stratovolcano ·Elevation: -1'456 m ·United States
NW Rota-1

Distance: 302 km ·Stratovolcano ·Elevation: -455 m ·Last eruption: 2010 ·United States
Esmeralda Bank

Distance: 358 km ·Stratovolcano ·Elevation: -74 m ·United States
Mariana Back-Arc Segment at 15.5°N

Distance: 382 km ·Fissure vent ·Elevation: -4'100 m ·Last eruption: 2015 ·United States
Ruby

Distance: 438 km ·Stratovolcano ·Elevation: -174 m ·Last eruption: 2023 ·United States

Subsequent earthquakes nearby

Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.

First 6 hours0

First 24 hours0

First 72 hours1

Strongest subsequent eventM5.3

M4.42026-09-11 18:59:48 UTC128.3 km158 km W of Merizo Village, Guam M5.32026-09-20 03:43:31 UTC134.9 kmMariana Islands

Comparison of seismic sources

3 sources currently report magnitudes from M5.1 to M5.2.

Measurements can differ because agencies use different networks and calculation methods. Values may be revised.

SourceMagnitudeDepthPosition difference

GFZM5.210.0 km11.1 km

USGSM5.110.0 km0.0 km

EMSCM5.234.0 km20.9 km

No unambiguous area assignment

Context for this earthquake

This event has no unambiguous country assignment in the analysed catalogue. It is therefore not assigned to a regional profile.

Earthquake overview

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#24

Earlier events M≥464

Earlier events M≥538

Compared since2025-01-01

The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.

Strongest earlier events

M6.12025-05-28 13:34:16 UTC147.6 km51 km SSE of Inarajan Village, Guam M6.02025-11-04 07:37:25 UTC85.1 kmNorthern Mariana Islands-Guam [Sea] M5.92025-12-24 15:00:37 UTC65.2 kmNorthern Mariana Islands-Guam [Sea] M5.92025-12-24 15:00:35 UTC66.8 kmSouth of Mariana Islands M5.92025-11-04 07:37:23 UTC89.6 km192 km WSW of Merizo Village, Guam

Stats (last 24h)

Global (24h)

580

Country (24h)

—

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No recent events available.