Earthquakes by city Japan 100 km

Seismic city profile

Earthquake in Iwai today

Iwai, Japan: 250 earthquakes of magnitude 4.0+ detected within 100 km.

Population

42,497

Residents in the indexed city record.

Earthquakes

250

Earthquakes at M4.0+ nearby.

Max magnitude

5.8

Strongest recorded event in the current radius.

Timezone

Asia/Tokyo

Coordinates 36.050, 139.900

Nearby activity pulse

Last 30 days

Last 12 months

Last nearby event: 2026-04-01 01:06 UTC

Strongest nearby event

M 5.8

Matsudo, Japan

2004-10-06 14:40 UTC

Updated today

Earthquake in Iwai today

No earthquake of magnitude M4.0+ has been detected today within 100 km of Iwai.

1 M4.0+ event(s) have been observed in the last 30 days around Iwai.

The strongest earthquake recorded near Iwai reached magnitude 5.8 on 2004-10-06 14:40 UTC, near Matsudo.

Status today

No earthquake detected today

Strongest today

Was there an earthquake in Iwai today?

No earthquake of magnitude M4.0+ has been detected today within 100 km of Iwai.

When was the last earthquake near Iwai?

The last nearby earthquake was recorded on 2026-04-01 01:06 UTC.

What is the strongest earthquake recorded near Iwai?

The strongest earthquake recorded near Iwai reached magnitude 5.8 on 2004-10-06 14:40 UTC, near Matsudo.

Map

Earthquakes within 100 km of Iwai

The map centers on Iwai and highlights the most recent earthquakes detected within 100 km.

Average magnitude

4.6

Average depth

65.3 km

Timeline

Recent seismic activity

Latest 25 events shown

UTC	Magnitude	Region	Depth
2026-07-16 00:01	M 4.7	Narita Japan	59.7 km
2026-07-02 07:17	M 4.3	Kamisu Japan	52.2 km
2026-06-26 18:59	M 4.2	Chiba Japan	74.2 km
2026-06-26 13:29	M 5.2	Sagamihara Japan	43.2 km
2026-06-26 04:31	M 4.3	Sakura Japan	74.8 km
2026-06-26 04:00	M 4.5	Asahi Japan	54.0 km
2026-06-26 03:46	M 5.8	Kamisu Japan	43.0 km
2026-06-26 02:48	M 4.3	Saitama Japan	53.9 km
2026-06-16 10:55	M 4.4	Matsudo Japan	42.4 km
2026-06-16 10:46	M 5.3	Kasukabe Japan	63.6 km
2026-05-24 18:00	M 4.0	Aihara Japan	148.1 km
2026-05-24 06:08	M 4.2	Hitachi Japan	65.5 km
2026-05-22 12:39	M 4.1	Mito Japan	102.4 km
2026-04-05 23:17	M 4.0	Tokyo Japan	138.6 km
2026-04-01 01:06	M 4.9	Kashiwa Japan	57.2 km
2026-03-15 05:06	M 4.9	Maebashi Japan	95.6 km
2026-02-15 02:52	M 4.1	Ōta Japan	68.5 km
2026-02-09 12:27	M 4.3	Ōta Japan	104.2 km
2026-02-06 15:58	M 4.2	Saitama Japan	95.2 km
2026-02-05 00:19	M 4.5	Sakura Japan	60.0 km
2026-01-30 18:47	M 4.3	Mito Japan	56.9 km
2026-01-25 02:46	M 4.3	Oyama Japan	82.6 km
2026-01-23 21:20	M 4.0	Hitachiomiya Japan	56.6 km
2026-01-17 16:49	M 4.3	Chiba Japan	72.1 km
2026-01-09 11:07	M 4.4	Mobara Japan	28.4 km

Monthly profile

Recent monthly trend

2026-01 5 events

2026-02 4 events

2026-03 1 events

2026-04 2 events

2026-05 3 events

2026-06 8 events

2026-07 2 events

Historic snapshot

Earthquakes history

No historic yearly data to display yet.

Year	Max magnitude	Earthquakes