In the evening of Monday October 14th, 2024, a M4.9 aftershock hit under land 12 kilometer from Chiba in Japan. The earthquake struck near a very densely populated region.
Felt the earthquake? Share this article: 
Earthquake Summary
The earthquake struck on land in Japan, 12 kilometer (7 mi) south-southeast of Chiba. The center of this earthquake had a quite shallow depth of 69 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.
| Date and Time: | Oct 14, 2024 19:45 (Tokyo Time) - Oct 14, 2024 10:45 Universal Time. |
|---|---|
| Location: | 12 km SSE of Chiba, Japan. Coordinates 35°30'8"N 140°10'18"E. |
| Map: |  Map of area around epicenter. Click to open in Google Maps. |
| Magnitude: | MAG 4.9 Detected by 126 stations. Maximum Error Range ±0.05 . |
| Depth: | 69 km (43 mi) A quite shallow depth. |
| Tsunami Risk: | Tsunami very unlikely While this was a shallow earthquake in a coastal area, it appears to have occurred under land (7 km from the sea) with a magnitude that is usually 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 . Ichihara in Chiba, Japan is the nearest significant place from the epicenter. The earthquake occurred 8 kilometer (5 mi) east of Ichihara.
Major cities near this earthquake: Tokyo is located 48 km to the west-northwest. Chiba is located 12 km to the north-northwest. Yokohama is located 48 km to the west.
The table below provides an overview of all places in proximity of today's earthquake.
Overview of nearby places
| Distance | Place |
|---|---|
| 8 km (5 mi) W from epicenter |
Ichihara Chiba, Japan. |
| 12 km (7 mi) NNW from epicenter |
Chiba Chiba, Japan. |
| 13 km (8 mi) E from epicenter |
Ōami Chiba, Japan. |
| 14 km (9 mi) SE from epicenter |
Mobara Chiba, Japan. |
| 16 km (10 mi) N from epicenter |
Yotsukaidō Chiba, Japan. |
| 18 km (11 mi) ENE from epicenter |
Tōgane Chiba, Japan. |
| 21 km (13 mi) NE from epicenter |
Yachimata Chiba, Japan. |
| 25 km (16 mi) WSW from epicenter |
Kisarazu Chiba, Japan. |
| 25 km (16 mi) ENE from epicenter |
Narutō Chiba, Japan. |
| 25 km (16 mi) NNE from epicenter |
Sakura Chiba, Japan. |
| 28 km (17 mi) NW from epicenter |
Honchō Chiba, Japan. |
| 32 km (20 mi) NW from epicenter |
Urayasu Tokyo, Japan. |
| 32 km (20 mi) WSW from epicenter |
Kimitsu Chiba, Japan. |
| 34 km (21 mi) NNE from epicenter |
Narita Chiba, Japan. |
| 34 km (21 mi) NNW from epicenter |
Shiroi Chiba, Japan. |
| 38 km (24 mi) SW from epicenter |
Futtsu Chiba, Japan. |
| 39 km (24 mi) NW from epicenter |
Matsudo Chiba, Japan. |
| 41 km (25 mi) W from epicenter |
Kawasaki Kanagawa, Japan. |
| 43 km (27 mi) NNW from epicenter |
Abiko Chiba, Japan. |
| 44 km (27 mi) NNW from epicenter |
Kashiwa Chiba, Japan. |
| 44 km (27 mi) N from epicenter |
Ryūgasaki Ibaraki, Japan. |
| 45 km (28 mi) N from epicenter |
Toride Ibaraki, Japan. |
| 46 km (29 mi) NNW from epicenter |
Nagareyama Chiba, Japan. |
| 47 km (29 mi) NW from epicenter |
Yashio Saitama, Japan. |
| 48 km (30 mi) W from epicenter |
Yokohama Kanagawa, Japan. |
| 48 km (30 mi) WNW from epicenter |
Tokyo Tokyo, Japan. |
| 50 km (31 mi) NW from epicenter |
Sōka Saitama, Japan. |
| 52 km (32 mi) WSW from epicenter |
Yokosuka Kanagawa, Japan. |
| 54 km (34 mi) NW from epicenter |
Kawaguchi Saitama, Japan. |
| 55 km (34 mi) NW from epicenter |
Koshigaya Saitama, Japan. |
| 56 km (35 mi) NW from epicenter |
Shimotoda Saitama, Japan. |
| 57 km (35 mi) NNW from epicenter |
Noda Chiba, Japan. |
| 59 km (37 mi) WNW from epicenter |
Chōfu Tokyo, Japan. |
| 60 km (37 mi) WSW from epicenter |
Kamakura Kanagawa, Japan. |
| 60 km (37 mi) WNW from epicenter |
Kamirenjaku Tokyo, Japan. |
| 60 km (37 mi) WNW from epicenter |
Musashino Tokyo, Japan. |
| 61 km (38 mi) WNW from epicenter |
Asaka Saitama, Japan. |
| 62 km (39 mi) WNW from epicenter |
Nishi-Tokyo-shi Tokyo, Japan. |
| 65 km (40 mi) NW from epicenter |
Saitama Saitama, Japan. |
| 65 km (40 mi) W from epicenter |
Machida Tokyo, Japan. |
| 65 km (40 mi) WSW from epicenter |
Fujisawa Kanagawa, Japan. |
| 66 km (41 mi) WNW from epicenter |
Tama Tokyo, Japan. |
| 66 km (41 mi) W from epicenter |
Minamirinkan Kanagawa, Japan. |
| 66 km (41 mi) NW from epicenter |
Kasukabe Saitama, Japan. |
| 72 km (45 mi) WSW from epicenter |
Chigasaki Kanagawa, Japan. |
| 72 km (45 mi) WNW from epicenter |
Tokorozawa Saitama, Japan. |
| 73 km (45 mi) NW from epicenter |
Ageoshimo Saitama, Japan. |
| 73 km (45 mi) W from epicenter |
Atsugi Kanagawa, Japan. |
| 77 km (48 mi) NW from epicenter |
Kawagoe Saitama, Japan. |
| 78 km (48 mi) WSW from epicenter |
Hiratsuka Kanagawa, Japan. |
| 79 km (49 mi) WNW from epicenter |
Hachiōji Tokyo, Japan. |
| 95 km (59 mi) NNW from epicenter |
Oyama Tochigi, Japan. |
| 96 km (60 mi) W from epicenter |
Uenohara Yamanashi, Japan. |
| 140 km (87 mi) NW from epicenter |
Maebashi Gunma, Japan. |
| 172 km (107 mi) WSW from epicenter |
Shizuoka Shizuoka, Japan. |
| 184 km (114 mi) NNE from epicenter |
Iwaki Fukushima, Japan. |
| 220 km (137 mi) NW from epicenter |
Nagano Nagano, Japan. |
| 268 km (167 mi) N from epicenter |
Yonezawa Yamagata, Japan. |
| 281 km (175 mi) N from epicenter |
Shiroishi Miyagi, Japan. |
| 285 km (177 mi) NNW from epicenter |
Niigata Niigata, Japan. |
| 297 km (185 mi) WNW from epicenter |
Toyama Toyama, Japan. |
| 298 km (185 mi) W from epicenter |
Nagoya Aichi, Japan. |
| 299 km (186 mi) W from epicenter |
Kakamigahara Gifu, Japan. |
Shaking reported by 157 people
People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 157 people have reported shaking in 25 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: 46 people.
- Ayase, Kanagawa, Japan: 16 people.
- Matsudo, Chiba, Japan: 9 people.
- Isehara, Kanagawa, Japan: 9 people.
- Ichikawa, Chiba, Japan: 8 people.
- Sodegaura, Chiba, Japan: 8 people.
- Tateyama, Chiba, Japan: 8 people.
- Urayasu, Chiba, Japan: 8 people.
- Yachiyo, Chiba, Japan: 8 people.
- Kamogawa, Chiba, Japan: 7 people.
This is likely an aftershock
This earthquake is likely an aftershock of the MAG-4.9 earthquake that struck 2 days earlier. That main earthquake hit 56 km (35 mi) north-northwest of the epicenter of this MAG-4.9 aftershock.
Overview of foreshocks and aftershocks
| Classification | Magnitude | When | Where |
|---|---|---|---|
| Main Shock | M 4.9 |
Oct 13, 2024 03:50 (Tokyo Time) | - |
| Aftershock This Earthquake |
M 4.9 |
2 days later Oct 14, 2024 19:45 (Tokyo Time) | 56 km (35 mi) SSE 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.
The chance that a significant earthquake like this one is followed by an even larger earthquake is not so large. On average, scientists estimate a 94% chance that a major earthquake will not be followed by an even larger one. It is still adviced to be aware of this risk
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. In total, 307 earthquakes with a magnitude of 4.9 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 12 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 | This earthquake appears to have struck on land near a coastal area (7 km from the sea). | Not this earthquake. This earthquake had a magnitude of 4.9. Earthquakes of this strength are unlikely to trigger a tsunami. |
This earthquake occurred at a depth of of 69 km (43 mi). Earthquakes this shallow could trigger a tsunami. |
Sources
Last updated 15/10/24 23:18 (). 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 us6000nyk2
- European-Mediterranean Seismological Centre (EMSC): Earthquake 20241014_0000087
- Geonames.org: World Cities Database
- Google Maps: Static API
- Earthquakelist.org: Historic Earthquakes Database
Share this article:
