Magnitude
M5.4
- Depth
- 61.7 km
- Source
- USGS
148 km SSE of Tateyama, Japan
M5.4 Earthquake near 148 km SSE of Tateyama, Japan
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded Content updated:
Automatically generated from measurement data by QuakeMap24. Values may change after further analysis. How our reports are produced ↗
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About this earthquake
On August 21, 2026 at 12:02 UTC, a magnitude M5.4 earthquake occurred near 148 km SSE of Tateyama, Japan. With a focal depth of about 62 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size can cause damage near the epicenter.
The data is provided by USGS and cross-checked across seismological networks.
Details
ID
51be993ae69949c64f3c43f1d54c5c5bf9f3121a
Magnitude
M5.4
Depth
61.7 km
UTC time
2026-08-21 12:02:07 UTC
Local time
—
Country
—
Source
usgs
Coordinates
33.71710,
140.38020
Temperature
27.5°C
Depth profile
Shallow
61.7 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
17felt 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: Aug 22, 2026, 5:02 PM UTC · Last checked: Sep 6, 2026, 5:07 PM UTC
Source: EMSC / LastQuake
Estimated impact
Green
No or minimal impact expected.
Estimated population exposed
9
Felt reports · max reported intensity 2.7
Ground shaking
IV
Light · Intensity (MMI) IV
Felt by many, no damage.
Tectonic context
Located on the Philippine Sea Plate.
Near the boundary Okhotsk ↔ Philippine Sea · about 99 km away
Nearby population centers
Distances are straight-line distances from the epicenter. Population data: GeoNames.
PlaceDistanceDirectionPopulation
Tateyama148.5 kmN50'064
Yokosuka186.0 kmN409'478
Yokohama202.2 kmN3'777'491
GeoNames · CC BY 4.0
Volcanoes nearby
Radius · 100 km
Nearby infrastructure
Airports
- Miyakejima Airport85.5 kmStraight-line distance
Japan · MYE · RJTQ - Hachijojima Airport86.8 kmStraight-line distanceJapan · HAC · RJTH
Source: OurAirports · Dataset date: 2026-09-06
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 hours1
Strongest subsequent eventM4.6
Comparison of seismic sources
5 sources currently report magnitudes from M5.2 to M5.5.
Measurements can differ because agencies use different networks and calculation methods. Values may be revised.
SourceMagnitudeDepthPosition difference
SERBIA_RSZM5.210.0 km14.0 km
GFZM5.410.0 km22.6 km
EMSCM5.549.0 km30.4 km
USGSM5.461.7 km0.0 km
RESIFM5.384.3 km16.4 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 overviewHistorical context nearby
Comparison with recorded earthquakes before this event within 150 km.
Magnitude rank#1
Earlier events M≥439
Earlier events M≥54
Compared since2025-01-04
The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.
Strongest earlier events
M5.22026-04-01 01:06:08 UTC124.8 km
M5.22025-11-04 22:17:26 UTC128.3 kmOff East Coast of Honshu, Japan
M5.22026-02-23 22:33:57 UTC84.7 kmEvent of magnitude 5.2, near of Tokyo (Monde)
M5.12025-09-13 00:17:57 UTC133.1 kmEvent of magnitude 5.1, near of Tokyo (Monde)
M4.92026-06-06 11:29:10 UTC90.4 kmOff East Coast of Honshu, Japan
Stats (last 24h)
Global (24h)
506
Country (24h)
—
—
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