M 4.1 - WESTERN HONSHU, JAPAN
WESTERN HONSHU, JAPAN
14 days ago • Monday, March 9, 2026 at 12:59 PM
Event Details
Latitude
35.4041°
Longitude
135.3463°
Depth
364.50km
Status
reviewed
Event Map
⚠️ Is This Earthquake Dangerous?
A magnitude 4.1 earthquake is classified as light. Noticeable shaking of indoor objects. Significant damage is unlikely.
📍 Depth: 364.5 km — This is a deep earthquake. Deep quakes are generally less damaging at the surface.
📊 What Does Magnitude 4.1 Mean?
Every whole number increase in magnitude represents a 10× increase in wave amplitude and ~31.6× increase in energy released.
🧠 Why Did This Earthquake Happen?
Earthquakes occur when stress built up along tectonic plate boundaries or faults is suddenly released. The JAPAN region sits near active geological boundaries where plates are constantly moving, colliding, or sliding past each other.
At a depth of 364.5 km, this seismic event originated deep within the Earth's mantle. The energy released traveled outward as seismic waves, causing the shaking felt at the surface.
Learn more about how earthquakes work →🛡️ Earthquake Safety: What Should You Do?
During the Shaking
- • Drop, Cover, and Hold On
- • Get under a sturdy table or desk
- • Stay away from windows and heavy objects
- • If outdoors, move to an open area
After the Shaking
- • Check for injuries and damage
- • Be prepared for aftershocks
- • Avoid damaged buildings
- • Listen to emergency broadcasts
Be Prepared
- • Keep an emergency kit ready
- • Know your evacuation routes
- • Secure heavy furniture to walls
- • Practice earthquake drills
🕒 Explore More Earthquakes
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💬 Did You Feel This Earthquake?
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