M 4.5 - 12 km NW of Kitaibaraki, Japan

Name: M 4.5 - 12 km NW of Kitaibaraki, Japan
Start: 2011-04-04T04:43:46+00:00
Location: 12 km NW of Kitaibaraki, Japan

April 4, 2011 at 04:43:46 UTC

Depth: 11.20 km (Shallow)

Key Takeaway

This light earthquake (M4.5) occurred 14 years ago near 12 km NW of Kitaibaraki, Japan, at a depth of 11.20 km (shallow).

M 4.5

Light

N/A

PAGER Alert

Tsunami

N/A

Felt Reports

Event Details

Magnitude	4.5 mb
Depth	11.20 km (Shallow)
Location	36.8660N, 140.6420E
Tsunami Warning	No
Significance	312 / 3000
Status	Reviewed
Network	us
USGS Event Page	View on USGS →

Frequently Asked Questions

What was the magnitude of this earthquake?

This earthquake had a magnitude of 4.5, classified as "Light". Light earthquakes produce noticeable shaking but rarely cause damage.

How deep was this earthquake?

This earthquake occurred at a depth of 11.20 km, classified as "Shallow". Shallow earthquakes tend to cause more damage at the surface because the energy has less distance to travel before reaching buildings and infrastructure.

Where exactly did this earthquake occur?

This earthquake occurred near 12 km NW of Kitaibaraki, Japan, at coordinates 36.8660N, 140.6420E. The location is determined by analyzing seismic wave arrival times at multiple monitoring stations.

Were there aftershocks associated with this event?

Aftershock data for this specific event can be explored by viewing nearby recent earthquakes listed below on this page. Aftershocks are smaller earthquakes that occur in the same area following a larger event, and they can continue for days, weeks, or even months depending on the original earthquake's magnitude.

What does the magnitude of this earthquake mean in practical terms?

A magnitude 4.5 earthquake is classified as "Light" — these are commonly felt by people indoors but rarely cause any significant damage.

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Data from the USGS Earthquake Hazards Program (ComCat). QuakeScan is not affiliated with the USGS. Event details may be updated as new data becomes available.