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M5.4 Earthquake near 148 km SSE of Tateyama, Japan

UTC time: 2026-08-21 12:02:07 UTC Local time: —
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.

Magnitude
M5.4
Depth
61.7 km
Source
USGS

148 km SSE of Tateyama, Japan

Map

M5.4 Earthquake near 148 km SSE of Tateyama, Japan · 2026-08-21 — Map showing the location of the epicenter
M5.4 Earthquake near 148 km SSE of Tateyama, Japan · 2026-08-21 — Map showing the location of the epicenter

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

Depth profile Depth: 61.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 61.7 km
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 20, 2026, 5:22 PM UTC

Source: EMSC / LastQuake

Estimated impact

Green No or minimal impact expected.
Estimated population exposed
IV 7'734
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

  • Kurose Hole
    Distance: 74 km ·Caldera ·Elevation: -114 m ·Japan
  • Mikurajima
    Distance: 74 km ·Stratovolcano ·Elevation: 851 m ·Last eruption: -4100 ·Japan
  • Hachijojima
    Distance: 86 km ·Stratovolcano(es) ·Elevation: 854 m ·Last eruption: 1606 ·Japan
  • Miyakejima
    Distance: 89 km ·Stratovolcano ·Elevation: 775 m ·Last eruption: 2010 ·Japan
  • Kozushima
    Distance: 126 km ·Lava dome(s) ·Elevation: 572 m ·Last eruption: 838 ·Japan
  • Niijima
    Distance: 127 km ·Lava dome(s) ·Elevation: 432 m ·Last eruption: 886 ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Miyakejima AirportJapan · MYE · RJTQ
    85.5 kmStraight-line distance
  • Hachijojima AirportJapan · HAC · RJTH
    86.8 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-20

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

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 overview

Historical 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)
587
Country (24h)
—
—
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