M4.8 earthquake 4 km W of Iwai, Japan
A magnitude 4.8 earthquake struck 4 km W of Iwai, Japan at Mar 31, 9:06 PM ET, 54 km deep, light – felt by most people nearby, rattling windows, rarely damage. 52 people reported feeling it.
Share
| Magnitude | 4.8 mww |
| Time | 1 Apr 2026, 01:06 UTC |
| Location | 36.057°, 139.855° – 4 km W of Iwai, Japan |
| Depth | 54.2 km |
| Felt reports | 52 |
| USGS event | us7000s999 |
Other earthquakes nearby this year
| Mag. | Where | When (ET) | Depth | Felt |
|---|---|---|---|---|
| 5.8 | 3 km E of Fujishiro, Japan · PAGER green | Aug 22, 1:00 PM 55 d ago | 61 km | 156 reports |
| 5.8 | 2 km ESE of Yōkaichiba, Japan · PAGER green | Jun 25, 11:46 PM 113 d ago | 43 km | 66 reports |
| 5.3 | 0 km NNE of Yōkaichiba, Japan | Oct 1, 8:27 AM 15 d ago | 42 km | 25 reports |
| 5.3 | 2 km SW of Koga, Japan · PAGER green | Jun 16, 6:46 AM 122 d ago | 64 km | 131 reports |
| 5.2 | 5 km W of Ōtsuki, Japan · PAGER green | Jun 26, 9:29 AM 112 d ago | 35 km | 144 reports |
| 4.9 | 3 km WSW of Shibayama, Japan | Oct 7, 3:13 PM 9 d ago | 73 km | 4 reports |
| 4.9 | 2 km SW of Sakai, Japan | Sep 28, 3:45 PM 18 d ago | 71 km | 69 reports |
| 4.9 | 1 km SW of Kiryū, Japan | Mar 15, 1:06 AM 216 d ago | 96 km | 14 reports |
| 4.8 | 1 km SE of Ishige, Japan | Sep 16, 11:07 AM 30 d ago | 80 km | 73 reports |
| 4.8 | 6 km WSW of Tsukuba, Japan | Dec 12, 5:05 AM 308 d ago | 63 km | 60 reports |
| 4.7 | 6 km ESE of Tōgane, Japan | Oct 11, 12:24 PM 5 d ago | 56 km | – |
| 4.6 | 9 km NNE of Midori, Japan | Oct 7, 3:36 PM 9 d ago | 96 km | – |
About this earthquake
How strong was the 4 km W of Iwai, Japan earthquake?
Magnitude 4.8 (mww), light – felt by most people nearby, rattling windows, rarely damage. Depth 54 km.
Was it felt?
52 people reported feeling it to the USGS "Did You Feel It?" survey; the highest reported intensity was 4.3.
Were there aftershocks?
No earthquakes within 100 km have followed so far in our records.
More
Source: U.S. Geological Survey (USGS) earthquake catalog, real-time feeds and FDSN event service; magnitudes and locations are revised by seismologists for hours after an event. Times are Eastern (ET) unless marked UTC. Not an alert service: for warnings follow local authorities and tsunami centers.