Under land 2 kilometer from Sakai in Japan, a MAG-4.7 earthquake occurred in the afternoon of Wednesday October 30th, 2024. The earthquake struck near a very densely populated region.
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Earthquake Summary
The earthquake struck on land in Japan, 2 kilometer (1 mi) west of Sakai in Ibaraki. The center of this earthquake had an intermediate depth of 75 km.
| Date and Time: | Oct 30, 2024 15:14 (Tokyo Time) - Oct 30, 2024 06:14 Universal Time. |
|---|---|
| Location: | 2 km west of Sakai, Ibaraki, Japan. Coordinates 36°5'51"N 139°46'38"E. |
| Map: |  Map of area around epicenter. Click to open in Google Maps. |
| Magnitude: | MAG 4.7 Detected by 9 stations. Maximum Error Range ±0.183 . |
| Depth: | 75 km (46 mi) An intermediate 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 . Sakai in Ibaraki, Japan is the nearest significant place from the epicenter. The earthquake occurred 2 kilometer (1 mi) west of Sakai.
Multiple major population centers exist within 300km of the earthquake that struck today. Tokyo is located 46 km to the south. Saitama is located 24 km to the south-southwest. Yokohama is located 75 km to the south.
A complete list of nearby places is included below.
Overview of nearby places
| Distance | Place |
|---|---|
| 2 km (1 mi) E from epicenter |
Sakai Ibaraki, Japan. |
| 5 km (3 mi) WSW from epicenter |
Satte Saitama, Japan. |
| 8 km (5 mi) WNW from epicenter |
Kurihashi Saitama, Japan. |
| 9 km (6 mi) SSW from epicenter |
Sugito Saitama, Japan. |
| 10 km (6 mi) WSW from epicenter |
Kukichūō Saitama, Japan. |
| 11 km (7 mi) NNW from epicenter |
Koga Ibaraki, Japan. |
| 12 km (7 mi) ESE from epicenter |
Iwai Ibaraki, Japan. |
| 13 km (8 mi) S from epicenter |
Kasukabe Saitama, Japan. |
| 14 km (9 mi) SW from epicenter |
Shiraoka Saitama, Japan. |
| 16 km (10 mi) W from epicenter |
Kazo Saitama, Japan. |
| 16 km (10 mi) SSW from epicenter |
Iwatsuki Saitama, Japan. |
| 17 km (11 mi) E from epicenter |
Ishige Ibaraki, Japan. |
| 18 km (11 mi) SW from epicenter |
Hasuda Saitama, Japan. |
| 18 km (11 mi) SSE from epicenter |
Noda Chiba, Japan. |
| 20 km (12 mi) SW from epicenter |
Ageoshimo Saitama, Japan. |
| 21 km (13 mi) ESE from epicenter |
Mitsukaidō Ibaraki, Japan. |
| 23 km (14 mi) WNW from epicenter |
Hanyū Saitama, Japan. |
| 23 km (14 mi) N from epicenter |
Oyama Tochigi, Japan. |
| 23 km (14 mi) WSW from epicenter |
Okegawa Saitama, Japan. |
| 23 km (14 mi) S from epicenter |
Koshigaya Saitama, Japan. |
| 24 km (15 mi) NNE from epicenter |
Yūki Ibaraki, Japan. |
| 24 km (15 mi) SSE from epicenter |
Yoshikawa Saitama, Japan. |
| 24 km (15 mi) W from epicenter |
Kōnosu Saitama, Japan. |
| 24 km (15 mi) SSW from epicenter |
Saitama Saitama, Japan. |
| 27 km (17 mi) SSW from epicenter |
Yono Saitama, Japan. |
| 28 km (17 mi) NW from epicenter |
Tatebayashi Gunma, Japan. |
| 29 km (18 mi) SSE from epicenter |
Nagareyama Chiba, Japan. |
| 29 km (18 mi) W from epicenter |
Gyōda Saitama, Japan. |
| 29 km (18 mi) S from epicenter |
Sōka Saitama, Japan. |
| 30 km (19 mi) NW from epicenter |
Sano Tochigi, Japan. |
| 31 km (19 mi) ENE from epicenter |
Tsukuba Ibaraki, Japan. |
| 32 km (20 mi) SSW from epicenter |
Shimotoda Saitama, Japan. |
| 32 km (20 mi) SE from epicenter |
Kashiwa Chiba, Japan. |
| 33 km (21 mi) S from epicenter |
Kawaguchi Saitama, Japan. |
| 34 km (21 mi) SW from epicenter |
Kawagoe Saitama, Japan. |
| 34 km (21 mi) SE from epicenter |
Abiko Chiba, Japan. |
| 35 km (22 mi) W from epicenter |
Kumagaya Saitama, Japan. |
| 36 km (22 mi) SSW from epicenter |
Asaka Saitama, Japan. |
| 37 km (23 mi) SSE from epicenter |
Matsudo Chiba, Japan. |
| 39 km (24 mi) NW from epicenter |
Ashikaga Tochigi, Japan. |
| 43 km (27 mi) SW from epicenter |
Sayama Saitama, Japan. |
| 43 km (27 mi) SW from epicenter |
Tokorozawa Saitama, Japan. |
| 46 km (29 mi) S from epicenter |
Tokyo Tokyo, Japan. |
| 47 km (29 mi) SSW from epicenter |
Nishi-Tokyo-shi Tokyo, Japan. |
| 48 km (30 mi) SSE from epicenter |
Honchō Chiba, Japan. |
| 53 km (33 mi) N from epicenter |
Utsunomiya Tochigi, Japan. |
| 63 km (39 mi) SSE from epicenter |
Chiba Chiba, Japan. |
| 64 km (40 mi) S from epicenter |
Kawasaki Kanagawa, Japan. |
| 64 km (40 mi) SW from epicenter |
Hachiōji Tokyo, Japan. |
| 69 km (43 mi) SSW from epicenter |
Machida Tokyo, Japan. |
| 75 km (47 mi) S from epicenter |
Yokohama Kanagawa, Japan. |
| 80 km (50 mi) SW from epicenter |
Uenohara Yamanashi, Japan. |
| 145 km (90 mi) NE from epicenter |
Iwaki Fukushima, Japan. |
| 155 km (96 mi) WNW from epicenter |
Nagano Nagano, Japan. |
| 177 km (110 mi) SW from epicenter |
Shizuoka Shizuoka, Japan. |
| 210 km (130 mi) NNW from epicenter |
Niigata Niigata, Japan. |
| 239 km (149 mi) WNW from epicenter |
Toyama Toyama, Japan. |
| 243 km (151 mi) NNE from epicenter |
Yamagata Yamagata, Japan. |
| 260 km (162 mi) NNE from epicenter |
Sendai Miyagi, Japan. |
| 279 km (173 mi) WSW from epicenter |
Nagoya Aichi, Japan. |
| 282 km (175 mi) WSW from epicenter |
Gifu-shi Gifu, Japan. |
| 289 km (180 mi) W from epicenter |
Kanazawa Ishikawa, Japan. |
| 296 km (184 mi) W from epicenter |
Ono Fukui, Japan. |
Shaking reported by 116 people
People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 116 people have reported shaking in 7 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:
- Musashino, Tokio, Japan: 33 people.
- ShÅ?wa, Saitama, Japan: 23 people.
- Mibu, Tochigi, Japan: 23 people.
- Tokyo, Tokio, Japan: 19 people.
- Higashimatsuyama, Saitama, Japan: 16 people.
- Kawasaki, Kanagawa, Japan: 1 person.
- Komae, Tokio, Japan: 1 person.
Aftershocks detected
After this earthquake struck, 1 smaller aftershock occurred. At a distance of 97 km (60 mi) east-southeast of this earthquake, an aftershock struck 2 days later. It measured a magnitude of 4.6
Overview of foreshocks and aftershocks
| Classification | Magnitude | When | Where |
|---|---|---|---|
| Main Shock This Earthquake |
M 4.7 |
Oct 30, 2024 15:14 (Tokyo Time) | - |
| Aftershock | M 4.6 |
2 days later Nov 1, 2024 23:16 (Tokyo Time) | 97 km (60 mi) ESE from Main Shock. |
More earthquakes coming?
The risk of aftershocks decreases rapidly over time. Usually, aftershocks are at least one order of magnitude lower than a main shock.
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 October 14th, 2024, when a 4.9 magnitude earthquake hit 75 km (47 mi) further south-southeast. An even stronger magnitude 7.5 earthquake struck on January 1st, 2024.
In total, 429 earthquakes with a magnitude of 4.7 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 9 days.
Tsunami very unlikely
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 4.7. Earthquakes of this strength are unlikely to trigger a tsunami. |
This earthquake occurred at a depth of of 75 km (46 mi). Earthquakes this shallow could trigger a tsunami. |
Sources
Last updated 20/11/24 08:48 (). This article is automatically generated based on available data. We keep checking multiple sources for additional information. This article gets updated as new details on this earthquake become available.
- US Geographic Society (USGS): Earthquake us7000nnyg
- European-Mediterranean Seismological Centre (EMSC): Earthquake 20241030_0000058
- Geonames.org: World Cities Database
- Google Maps: Static API
- Earthquakelist.org: Historic Earthquakes Database
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