Magnitude
M3.7
- Depth
- 50.0 km
- Source
- EMSC
Chiba Prefecture · Isumi
Country overviewJapan · Chiba Prefecture
M3.7 Earthquake near Isumi, Chiba Prefecture (Japan)
Map
About this earthquake
A magnitude M3.7 earthquake was recorded near Isumi, Chiba Prefecture (Japan) on June 18, 2026 at 18:44 UTC. With a focal depth of about 50 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude are often felt but rarely cause damage.
The event was recorded by EMSC. Japan: over the past 24 hours, QuakeMap24 logged 2 earthquakes, the strongest at M3.9.
Details
ID
658ce897ddadcc382c96c7bd555166bc2b845662
Magnitude
M3.7
Depth
50.0 km
UTC time
2026-06-18 18:44:30 UTC
Local time
—
Country
State
City
Source
emsc
Coordinates
35.20000,
140.50000
Temperature
21.4°C
Depth profile
Shallow
50 km
50 km — deeper than the regional average (33.2 km)
Regional average: 33.2 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
Volcanoes nearby
Chiba Prefecture
Context for this earthquake
04 Oct 2025 – 04 Oct 2026 · M ≥ 3.0 · 34 Catalogue entries
Of 33 other entries for this area and period, 16 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.
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Country statistics · Japan
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Stats (last 24h)
Global (24h)
458
Country (24h)
Japan
2