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M5.1 Earthquake near 77 km SSW of San Jose Village, Northern Mariana Islands

UTC time: 2026-09-16 18:06:41 UTC Local time: —

Earthquake newsQuakeMap24

First published: 2026-09-16 18:17:11 UTC Content updated: 2026-09-18 18:23:06 UTC

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

Magnitude

M5.1

Depth: 110.8 km
Source: USGS

77 km SSW of San Jose Village, Northern Mariana Islands

Map

About this earthquake

A magnitude M5.1 earthquake was recorded near 77 km SSW of San Jose Village, Northern Mariana Islands on September 16, 2026 at 18:06 UTC. At around 111 km, the focal depth places this among intermediate-depth events. Earthquakes of this magnitude can damage poorly built structures.

The event was recorded by USGS.

Details

a05e59e3dd9300da374f32987111c490df55f9d5

Magnitude

M5.1

Depth

110.8 km

UTC time

2026-09-16 18:06:41 UTC

Local time

—

Country

—

Source

usgs

Coordinates

14.28660, 145.47290

Temperature

28.5°C

Depth profile

Intermediate

110.8 km

Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

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 16, 2026, 6:11 PM UTC · Last checked: Sep 21, 2026, 5:07 PM 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, 6:06 PM UTC · Last checked: Sep 21, 2026, 5:07 PM UTC

Sep 20, 2026, 7:00 PM UTC – Sep 21, 2026, 7:00 PM UTC

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	20.75 %	0–2
M ≥ 4.0	2.95 %	0–1
M ≥ 5.0	0.31 %	0–0
M ≥ 6.0	0.03 %	0–0
M ≥ 7.0	< 0.01 %	0–0

Sep 20, 2026, 7:00 PM UTC – Sep 27, 2026, 7:00 PM UTC

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	50.79 %	0–9
M ≥ 4.0	12.12 %	0–1
M ≥ 5.0	1.49 %	0–0
M ≥ 6.0	0.15 %	0–0
M ≥ 7.0	0.02 %	0–0

Sep 20, 2026, 7:00 PM UTC – Oct 20, 2026, 7:00 PM UTC

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	68.70 %	0–21
M ≥ 4.0	23.06 %	0–3
M ≥ 5.0	3.41 %	0–1
M ≥ 6.0	0.36 %	0–0
M ≥ 7.0	0.04 %	0–0

Sep 20, 2026, 7:00 PM UTC – Sep 20, 2027, 7:00 PM UTC

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	85.00 %	0–57
M ≥ 4.0	41.55 %	0–6
M ≥ 5.0	8.42 %	0–1
M ≥ 6.0	0.97 %	0–0
M ≥ 7.0	0.10 %	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

10 Felt reports · max reported intensity 3.1

Tectonic context

Located on the Mariana Plate.

Near the boundary Philippine Sea ↔ Mariana · about 123 km away

Nearby population centers

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

PlaceDistanceDirectionPopulation

Yigo Village89.7 kmSW20'539

GeoNames · CC BY 4.0

Volcanoes nearby

Esmeralda Bank

Distance: 78 km ·Stratovolcano ·Elevation: -74 m ·United States
NW Rota-1

Distance: 83 km ·Stratovolcano ·Elevation: -455 m ·Last eruption: 2010 ·United States
Ruby

Distance: 147 km ·Stratovolcano ·Elevation: -174 m ·Last eruption: 2023 ·United States
Mariana Back-Arc Segment at 15.5°N

Distance: 162 km ·Fissure vent ·Elevation: -4'100 m ·Last eruption: 2015 ·United States
East Diamante

Distance: 184 km ·Stratovolcano ·Elevation: -127 m ·United States
Forecast Seamount

Distance: 194 km ·Stratovolcano ·Elevation: -1'456 m ·United States

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

Rota International AirportNorthern Mariana Islands · ROP · PGRO
28.0 kmStraight-line distance
Francisco Manglona Borja / Tinian International AirportNorthern Mariana Islands · TIQ · PGWT
80.8 kmStraight-line distance
Saipan International AirportNorthern Mariana Islands · SPN · PGSN
96.6 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-21

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

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 hours0

Strongest subsequent eventM5.3

M5.32026-09-20 03:43:25 UTC140.2 km108 km ESE of Yigo Village, Guam M4.92026-09-20 06:47:56 UTC116.4 kmGUAM REGION

Comparison of seismic sources

4 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

RESIFM5.186.6 km2.2 km

EMSCM5.2103.0 km15.1 km

GFZM5.2102.0 km11.7 km

USGSM5.1110.8 km0.0 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≥482

Earlier events M≥535

Compared since2025-01-01

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

Strongest earlier events

M6.12025-08-10 04:56:49 UTC131.5 km117 km ESE of Yigo Village, Guam M6.02025-08-10 04:56:48 UTC132.5 km93 km ESE of Inarajan Village, Guam M6.02025-03-01 20:02:12 UTC79.6 km M5.92025-12-15 23:06:18 UTC56.5 kmMariana Islands M5.92025-08-10 04:56:48 UTC132.6 kmGUAM REGION

Stats (last 24h)

Global (24h)

632

Country (24h)

—

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