Written by on . Last updated April 17th, 2024.

In the morning of Thursday March 21st, 2024, a significant M5.2 earthquake hit under land 4 kilometer from Kasukabe in Japan. The earthquake struck near a very densely populated region.

Felt the earthquake? Share this article: Share on Facebook Tweet Submit to Reddit Share on LinkedIn

Earthquake Summary

The earthquake struck on land in Japan, 4 kilometer (2 mi) east of Kasukabe in Saitama. The center of this earthquake had a quite shallow depth of 48 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time: Mar 21, 2024 09:08 (Tokyo Time)
- Mar 21, 2024 00:08 Universal Time.
Location: 4 km east of Kasukabe, Saitama, Japan.
Coordinates 35°59'16"N 139°47'56"E.
Map: Map of area around epicenter.
Map of area around epicenter. Click to open in Google Maps.
Magnitude: MAG 5.2
Detected by 18 stations. Maximum Error Range ±0.073 .
Depth: 48 km (30 mi)
A quite shallow depth.
Tsunami Risk: Tsunami very unlikely
While this was a shallow earthquake, it appears to have occurred under land with a magnitude not strong enough to cause tsunami's.
Always stay cautious - More info here.

Nearby towns and cities

This earthquake may have been felt in Japan . Kasukabe in Saitama, Japan is the nearest significant place from the epicenter. The earthquake occurred 4 kilometer (2 mi) east of Kasukabe.

Multiple large cities are in proximity of today's earthquake. Tokyo is located 35 km to the south-southwest. Saitama is located 16 km to the southwest. Yokohama is located 63 km to the south-southwest.

A complete list of nearby places is included below.

Overview of nearby places

Distance Place
4 km (2 mi)
W from epicenter
Kasukabe

Saitama, Japan.
8 km (5 mi)
NW from epicenter
Sugito

Saitama, Japan.
8 km (5 mi)
SE from epicenter
Noda

Chiba, Japan.
8 km (5 mi)
S from epicenter
Matsubushi

Saitama, Japan.
10 km (6 mi)
WSW from epicenter
Iwatsuki

Saitama, Japan.
11 km (7 mi)
S from epicenter
Koshigaya

Saitama, Japan.
11 km (7 mi)
NW from epicenter
Satte

Saitama, Japan.
11 km (7 mi)
NE from epicenter
Iwai

Ibaraki, Japan.
11 km (7 mi)
SSE from epicenter
Yoshikawa

Saitama, Japan.
12 km (7 mi)
N from epicenter
Sakai

Ibaraki, Japan.
13 km (8 mi)
WNW from epicenter
Shiraoka

Saitama, Japan.
14 km (9 mi)
W from epicenter
Hasuda

Saitama, Japan.
14 km (9 mi)
NW from epicenter
Kukichūō

Saitama, Japan.
16 km (10 mi)
SW from epicenter
Saitama

Saitama, Japan.
17 km (11 mi)
SSE from epicenter
Nagareyama

Chiba, Japan.
17 km (11 mi)
W from epicenter
Ageoshimo

Saitama, Japan.
17 km (11 mi)
S from epicenter
Sōka

Saitama, Japan.
17 km (11 mi)
E from epicenter
Mitsukaidō

Ibaraki, Japan.
18 km (11 mi)
SSW from epicenter
Hatogaya-honchō

Saitama, Japan.
19 km (12 mi)
ESE from epicenter
Moriya

Ibaraki, Japan.
19 km (12 mi)
SW from epicenter
Yono

Saitama, Japan.
19 km (12 mi)
SSE from epicenter
Yashio

Saitama, Japan.
21 km (13 mi)
SE from epicenter
Kashiwa

Chiba, Japan.
22 km (14 mi)
SSW from epicenter
Kawaguchi

Saitama, Japan.
22 km (14 mi)
W from epicenter
Okegawa

Saitama, Japan.
22 km (14 mi)
SSW from epicenter
Shimotoda

Saitama, Japan.
23 km (14 mi)
NW from epicenter
Kazo

Saitama, Japan.
23 km (14 mi)
NNW from epicenter
Koga

Ibaraki, Japan.
24 km (15 mi)
SE from epicenter
Abiko

Chiba, Japan.
25 km (16 mi)
SSE from epicenter
Matsudo

Chiba, Japan.
26 km (16 mi)
SW from epicenter
Shiki

Saitama, Japan.
27 km (17 mi)
ESE from epicenter
Toride

Ibaraki, Japan.
27 km (17 mi)
SW from epicenter
Asaka

Saitama, Japan.
27 km (17 mi)
WNW from epicenter
Kōnosu

Saitama, Japan.
30 km (19 mi)
WSW from epicenter
Kawagoe

Saitama, Japan.
35 km (22 mi)
N from epicenter
Oyama

Tochigi, Japan.
35 km (22 mi)
SSW from epicenter
Tokyo

Tokyo, Japan.
36 km (22 mi)
SSE from epicenter
Urayasu

Tokyo, Japan.
36 km (22 mi)
NE from epicenter
Tsukuba

Ibaraki, Japan.
36 km (22 mi)
SW from epicenter
Tokorozawa

Saitama, Japan.
36 km (22 mi)
SSE from epicenter
Honchō

Chiba, Japan.
37 km (23 mi)
SW from epicenter
Nishi-Tokyo-shi

Tokyo, Japan.
38 km (24 mi)
NW from epicenter
Tatebayashi

Gunma, Japan.
38 km (24 mi)
WSW from epicenter
Sayama

Saitama, Japan.
39 km (24 mi)
SSW from epicenter
Kamirenjaku

Tokyo, Japan.
43 km (27 mi)
SSW from epicenter
Chōfu

Tokyo, Japan.
52 km (32 mi)
S from epicenter
Kawasaki

Kanagawa, Japan.
52 km (32 mi)
SE from epicenter
Chiba

Chiba, Japan.
57 km (35 mi)
SW from epicenter
Hachiōji

Tokyo, Japan.
59 km (37 mi)
SSW from epicenter
Machida

Tokyo, Japan.
63 km (39 mi)
SSW from epicenter
Yokohama

Kanagawa, Japan.
65 km (40 mi)
N from epicenter
Utsunomiya

Tochigi, Japan.
74 km (46 mi)
SW from epicenter
Uenohara

Yamanashi, Japan.
153 km (95 mi)
NE from epicenter
Iwaki

Fukushima, Japan.
162 km (101 mi)
WNW from epicenter
Nagano

Nagano, Japan.
170 km (106 mi)
SW from epicenter
Shizuoka

Shizuoka, Japan.
223 km (139 mi)
NNW from epicenter
Niigata

Niigata, Japan.
244 km (152 mi)
WNW from epicenter
Toyama

Toyama, Japan.
255 km (158 mi)
N from epicenter
Yamagata

Yamagata, Japan.
271 km (168 mi)
NNE from epicenter
Sendai

Miyagi, Japan.
276 km (171 mi)
WSW from epicenter
Nagoya

Aichi, Japan.
281 km (175 mi)
WSW from epicenter
Gifu-shi

Gifu, Japan.
293 km (182 mi)
WNW from epicenter
Kanazawa

Ishikawa, Japan.
298 km (185 mi)
W from epicenter
Ono

Fukui, Japan.
Cities and Towns around the epicenter of this earthquake.

Shaking reported by 58 people

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 58 people have reported shaking in 30 places, all within Japan.We keep updating this article as more ground reports become available. You may report that you felt this earthquake here.

Places with most reports:

  • Tokyo, Tokio, Japan: 20 people.
  • Naka, Ibaraki, Japan: 4 people.
  • Fussa, Chiba, Japan: 3 people.
  • Saitama, Saitama, Japan: 2 people.
  • Narashino, Chiba, Japan: 2 people.
  • Komae, Tokio, Japan: 2 people.
  • Kawasaki, Kanagawa, Japan: 2 people.
  • Musashino, Tokio, Japan: 1 person.
  • Mitaka, Tokio, Japan: 1 person.
  • Higashimurayama, Tokio, Japan: 1 person.

Aftershocks detected

This main shock was prefaced by 1 smaller foreshock. Nearby this earthquake a foreshock struck 3 days earlier. It measured a magnitude of 4.4

Overview of foreshocks and aftershocks

Classification Magnitude When Where
Foreshock M 4.4 3 days earlier
Mar 18, 2024 18:49 (Tokyo Time)
56 km (35 mi)
SE from Main Shock.
Main Shock
This Earthquake
M 5.2 Mar 21, 2024 09:08
(Tokyo Time)
-
Detected MAG2.5+ earthquakes within within 100km (62 mi), that occurred in the three days before and after the main shock.

More earthquakes coming?

Aftershocks are usually at least 1 order of magnitude less strong than main shocks. The more time passes, the smaller the chance and likely strength of any potential aftershocks.

It's always adviced to be cautious of the risk of a larger shock following any significant earthquake, however this risk is fairly small. There is a roughly 94 percent change that no larger main shock will follow in the days following this earthquake.

Read: How to Stay Safe during an Earthquake (cdc.gov).

Earthquakes like this happen often in the region

Earthquakes of this strength are very common in the region. This is the strongest earthquake to hit since March 16th, 2024, when a 5.3 magnitude earthquake hit 196 km (122 mi) further north-east. An even stronger magnitude 7.5 earthquake struck on January 1st, 2024.

In total, 98 earthquakes with a magnitude of 5.2 or higher have been registered within 300km (186 mi) of this epicenter in the past 10 years. This comes down to an average of once every month.

Tsunami very unlikely

DISCLAIMER: We strongly suggest to closely monitor advice from local authorities with regards to tsunami risks. Our analysis is based on automatically collected data from external sources, and these might contain mistakes. In addition, earthquakes can cause landslides that may lead to a tsunami, or be a followed by another, potentially stonger, earthquake.

While MAG-6.5+ earthquakes may cause tsunami's, it appears that the epicenter of this earthquake hit under land. In addition, the reported depth is deeper than 100km, making the risk of a tsunami even less likely. However always stay cautious and monitor advice from local authorities.

Tsunami Risk Factors

Factor Under Sea? MAG-6.5 or stronger? Shallow depth?
Explanation Almost all tsunami's are caused by earthquakes with their epicenter under sea or very near the sea. However stay cautious in coastal areas as earthquakes on land may cause landslides into sea, potentially still causing a local tsunami. Under MAG 6.5: Very unlikely to cause a tsunami.
MAG 6.5 to 7.5: Destructive tsunami's do occur, but are uncommon. Likely to observe small sea level changes.
MAG 7.6+: Earthquakes with these magnitudes might produce destructive tsunami's.
Most destructive tsunami's are caused by shallow earthquakes with a depth between 0 and 100km under the surface of the earth. Deeper tsunami's are unlikely to displace to ocean floor.
This Earthquake Not this earthquake.
This earthquake appears to have struck on land far from any coast.
Not this earthquake.
This earthquake had a magnitude of 5.2. Earthquakes of this strength are unlikely to trigger a tsunami.
This earthquake occurred at a depth of of 48 km (30 mi). Earthquakes this shallow could trigger a tsunami.

Sources

Last updated 17/04/24 03:18 (). As more information on this earthquake becomes available this article will be updated. This article is automatically composed based on data originating from multiple sources.

  1. US Geographic Society (USGS): Earthquake us6000mk4v
  2. European-Mediterranean Seismological Centre (EMSC): Earthquake 20240321_0000002
  3. Geonames.org: World Cities Database
  4. Google Maps: Static API
  5. Earthquakelist.org: Historic Earthquakes Database

Share this article: Share on Facebook Tweet Submit to Reddit Share on LinkedIn