Earthquake · Japan
M7.4 earthquake near Miyako, Japan
A magnitude 7.4 earthquake struck 102 km ENE of Miyako, Japan on 20 April 2026 at 07:52 UTC, at a depth of 25 km.
- Magnitude
- 7.4 mww
- When
- 20 April 2026, 07:52 UTC
- Depth
- 25 km
- Location
- 39.97° N, 143.06° E
- Strongest shaking (estimated)
- Intensity VI (strong)
- Felt reports
- 138 people told USGS they felt it
- USGS PAGER alert
- Green
- Tsunami
- The USGS flagged it for possible tsunami. Check the official warning centres
- Source
- USGS event page
What it means
A magnitude 7.4 is a major earthquake; there are about 15 a year worldwide, and they can cause serious damage over a wide area. At 25 km deep it was a shallow earthquake, which usually means stronger shaking near the epicentre.
The magnitude may be revised as more data comes in. Read Earthquake magnitude explained for what the numbers mean.
Aftershocks
98 earthquakes of magnitude 4 or more within 150 km in the 30 days after; the largest was a magnitude 6.7.
| Mag | Where | When (UTC) |
|---|---|---|
| 6.7 | 41 km ESE of Ōfunato, Japan | 15 May 2026, 11:22 |
| 6.0 | 100 km E of Miyako, Japan | 20 April 2026, 07:56 |
| 5.5 | 121 km E of Noda, Japan | 21 April 2026, 18:44 |
| 5.4 | 143 km ENE of Miyako, Japan | 20 April 2026, 08:03 |
| 5.4 | 100 km E of Yamada, Japan | 20 April 2026, 08:33 |
| 5.4 | 111 km E of Miyako, Japan | 20 April 2026, 08:32 |
| 5.3 | 135 km E of Miyako, Japan | 20 April 2026, 08:01 |
| 5.3 | 142 km ENE of Miyako, Japan | 21 April 2026, 05:29 |
| 5.3 | 111 km ENE of Miyako, Japan | 22 April 2026, 00:01 |
| 5.3 | 117 km E of Yamada, Japan | 20 April 2026, 08:02 |
Near the coast, strong or long shaking can be followed by a tsunami: see Tsunami warning signs.
Not an official warning service. In an emergency, follow your local authorities.