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M6.3 Depth: 33.0 km

M6.3 Earthquake

UTC time: 2026-04-20 07:52:58 UTC Local time: —

About this earthquake

On April 20, 2026 at 07:52 UTC, a magnitude M6.3 earthquake occurred near Earthquake location (39.481, 142.115). With a focal depth of about 33 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude can cause significant damage in populated areas.

The event was recorded by NNSN.

Details

Magnitude
M6.3
Depth
33.0 km
UTC time
2026-04-20 07:52:58 UTC
Local time
—
Country
—
Source
nnsn
Coordinates
39.48100, 142.11500

Map

Depth profile

Depth profile Depth: 33 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 33 km
Shallow
33 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

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Yamada14.3 kmW15'195
Morioka86.2 kmW290'700
Sendai172.9 kmSW1'096'704

GeoNames · CC BY 4.0

Volcanoes nearby

  • Iwatesan
    Distance: 104 km ·Complex ·Elevation: 2'038 m ·Last eruption: 1919 ·Japan
  • Akita-Komagatake
    Distance: 117 km ·Stratovolcano(es) ·Elevation: 1'637 m ·Last eruption: 1971 ·Japan
  • Hachimantai
    Distance: 120 km ·Stratovolcano ·Elevation: 1'613 m ·Last eruption: -5350 ·Japan
  • Akita-Yakeyama
    Distance: 128 km ·Stratovolcano ·Elevation: 1'366 m ·Last eruption: 1997 ·Japan
  • Kurikomayama
    Distance: 128 km ·Stratovolcano ·Elevation: 1'627 m ·Last eruption: 1950 ·Japan
  • Naruko
    Distance: 146 km ·Caldera ·Elevation: 470 m ·Last eruption: 837 ·Japan

Subsequent earthquakes nearby

Events recorded after this earthquake within 250 km. They are not automatically classified as aftershocks.

First 6 hours30
First 24 hours46
First 72 hours76
Strongest subsequent eventM7.5
M7.42026-04-20 07:52:59 UTC88.7 kmOff East Coast of Honshu, Japan M7.52026-04-20 07:52:59 UTC89.8 kmOff east coast of Honshu, Japan [Sea: Japan] M7.42026-04-20 07:53:00 UTC95.4 km###.# km ( ###.# mi) NW (az= 308.7) from Wendover, UT M5.32026-04-20 08:03:08 UTC170.3 kmOFF EAST COAST OF HONSHU, JAPAN M4.12026-04-20 08:08:46 UTC142.3 km M5.22026-04-20 08:08:54 UTC120.6 kmNEAR EAST COAST OF HONSHU, JAPAN M4.12026-04-20 08:14:48 UTC70.0 km M4.42026-04-20 08:15:19 UTC139.5 km M4.12026-04-20 08:23:47 UTC142.3 km M4.32026-04-20 08:30:10 UTC70.0 km M4.82026-04-20 08:32:42 UTC156.6 km M5.62026-04-20 08:32:43 UTC94.1 kmOFF EAST COAST OF HONSHU, JAPAN

Historical context nearby

Comparison with recorded earthquakes before this event within 250 km.

Magnitude rank#33
Earlier events M≥4628
Earlier events M≥5319
Compared since2025-01-05

The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.

Strongest earlier events

M7.72025-12-08 14:15:13 UTC168.7 km M7.62026-04-20 07:52:57 UTC109.4 kmOff East Coast of Honshu, Japan M7.62025-12-08 14:15:12 UTC172.8 kmHOKKAIDO, JAPAN REGION M7.62025-12-08 14:15:10 UTC173.7 km74 km ENE of Misawa, Japan M7.62025-12-08 14:15:09 UTC169.6 km84 km ENE of Misawa, Japan

Stats (last 24h)

Global (24h)
661
Country (24h)
—
—
Current earthquakes in
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