Japan earthquakes

M5.4 earthquake 10 km SW of Hasaki, Japan

A magnitude 5.4 earthquake struck 10 km SW of Hasaki, Japan on Sun, Feb 19, 2017, 6:19 PM JST (09:19 UTC), 42 km (26 mi) below the surface.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 5.4 (Mww, W-phase moment), moderate
Magnitude from: USGS National Earthquake Information Center
Local time: Sun, Feb 19, 2017, 6:19 PM JST
UTC: 2017-02-19 09:19:31 UTC
Depth: 42.0 km (26.1 mi), shallow
Epicenter: 35.662° N, 140.752° E
Region: Japan
Felt reports: 127
Strongest shaking: IV, light shaking
PAGER alert: Green
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
5.4	Mww, W-phase moment	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.071 · 19 stations
5.49	Mw, moment	ISC-GEM global catalog	Final · ±0.1
5.4	Mwr, regional moment	USGS National Earthquake Information Center	Moment tensor · Reviewed

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated: IV, light shaking
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

127 people reported to the USGS what they felt; the strongest reported shaking was V, moderate shaking.

Estimated impact

The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.

Alert level: Green: little or no damage or loss of life expected

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Reverse (thrust)
Moment magnitude: 5.4 Mww
Nodal plane 1: Strike 204°, dip 26°, rake 108°
Nodal plane 2: Strike 4°, dip 65°, rake 81°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 6.4 km horizontally, 1.9 km in depth
Magnitude uncertainty: ±0.07
Depth from: From modeling of broad-band P waveforms
Station coverage gap: 82°
Stations used: 341

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.4 and up: 16 in the 60 days after this one and 6 in the 30 days before it.

After

Before

Earthquakes today Japan earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20008ks7 (also filed as iscgem614137695). Read Sun, Oct 4, 2026, 8:06 PM UTC.