In the Philippine Sea 173 kilometer from Hamamatsu, Japan, a significant Magnitude 5.2 earthquake occurred in the evening of Tuesday December 23rd, 2025.
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Earthquake Summary
This earthquake hit under water in the Philippine Sea, 163 kilometers (101 mi) off the coast of Japan, 173 kilometer south of Hamamatsu in Shizuoka. The center of this earthquake had a deep depth of 337 km.
| Date and Time: | Dec 23, 2025 18:44 (Tokyo Time) - Dec 23, 2025 09:44 Universal Time. |
|---|---|
| Location: | 173 km south of Hamamatsu, Shizuoka, Japan. Coordinates 33°8'57"N 137°56'11"E. |
| Map: |  Map of area around epicenter. Click to open in Google Maps. |
| Magnitude: | MAG 5.2 Detected by 19 stations. Maximum Error Range ±0.071 . |
| Depth: | 337 km (209 mi) A deep depth. |
| Tsunami Risk: | Tsunami very unlikely Earthquakes under MAG-6.5 at depths deeper than 100km are very unlikely to cause tsunami's. Always stay cautious - More info here. |
Nearby towns and cities
This earthquake may have been felt in Japan . Located 164 kilometer (102 mi) south of the epicenter of this earthquake, Ōyama (Shizuoka, Japan) is the nearest significant population center.
Multiple major population centers exist within 300km of the earthquake that struck today. Yokohama is located 299 km to the north-northeast. Osaka is located 283 km to the northwest. Nagoya is located 245 km to the north-northwest.
A complete list of nearby places is included below.
Overview of nearby places
| Distance | Place |
|---|---|
| 164 km (102 mi) N from epicenter |
Ōyama Shizuoka, Japan. |
| 173 km (107 mi) N from epicenter |
Hamamatsu Shizuoka, Japan. |
| 173 km (107 mi) N from epicenter |
Iwata Shizuoka, Japan. |
| 174 km (108 mi) N from epicenter |
Kikugawa Shizuoka, Japan. |
| 177 km (110 mi) NNW from epicenter |
Kosai Shizuoka, Japan. |
| 178 km (111 mi) N from epicenter |
Fukuroi Shizuoka, Japan. |
| 180 km (112 mi) NNW from epicenter |
Tahara Aichi, Japan. |
| 180 km (112 mi) N from epicenter |
Kakegawa Shizuoka, Japan. |
| 184 km (114 mi) N from epicenter |
Hamakita Shizuoka, Japan. |
| 187 km (116 mi) N from epicenter |
Shimada Shizuoka, Japan. |
| 187 km (116 mi) NNW from epicenter |
Toyohashi Aichi, Japan. |
| 187 km (116 mi) NW from epicenter |
Ise Mie, Japan. |
| 192 km (119 mi) NNW from epicenter |
Toyokawa Aichi, Japan. |
| 193 km (120 mi) N from epicenter |
Fujieda Shizuoka, Japan. |
| 194 km (121 mi) N from epicenter |
Yaizu Shizuoka, Japan. |
| 198 km (123 mi) NNW from epicenter |
Gamagōri Aichi, Japan. |
| 208 km (129 mi) N from epicenter |
Shizuoka Shizuoka, Japan. |
| 212 km (132 mi) NNW from epicenter |
Okazaki Aichi, Japan. |
| 216 km (134 mi) NNW from epicenter |
Anjō Aichi, Japan. |
| 219 km (136 mi) NW from epicenter |
Tsu Mie, Japan. |
| 222 km (138 mi) NNW from epicenter |
Kariya Aichi, Japan. |
| 227 km (141 mi) NNW from epicenter |
Toyota Aichi, Japan. |
| 230 km (143 mi) NNW from epicenter |
Suzuka Mie, Japan. |
| 233 km (145 mi) NNE from epicenter |
Numazu Shizuoka, Japan. |
| 235 km (146 mi) NNE from epicenter |
Fuji Shizuoka, Japan. |
| 236 km (147 mi) NNW from epicenter |
Yokkaichi Mie, Japan. |
| 245 km (152 mi) NNW from epicenter |
Nagoya Aichi, Japan. |
| 250 km (155 mi) NNW from epicenter |
Kasugai Aichi, Japan. |
| 260 km (162 mi) NNE from epicenter |
Odawara Kanagawa, Japan. |
| 260 km (162 mi) NW from epicenter |
Nara-shi Nara, Japan. |
| 261 km (162 mi) NNW from epicenter |
Ichinomiya Aichi, Japan. |
| 264 km (164 mi) N from epicenter |
Iida Nagano, Japan. |
| 270 km (168 mi) NW from epicenter |
Yao Ōsaka, Japan. |
| 271 km (168 mi) NE from epicenter |
Tateyama Chiba, Japan. |
| 274 km (170 mi) NNE from epicenter |
Hiratsuka Kanagawa, Japan. |
| 275 km (171 mi) NNW from epicenter |
Gifu-shi Gifu, Japan. |
| 278 km (173 mi) NNE from epicenter |
Chigasaki Kanagawa, Japan. |
| 278 km (173 mi) NW from epicenter |
Sakai Ōsaka, Japan. |
| 279 km (173 mi) NW from epicenter |
Neyagawa Ōsaka, Japan. |
| 281 km (175 mi) NW from epicenter |
Ōtsu Shiga, Japan. |
| 281 km (175 mi) NW from epicenter |
Hirakata Ōsaka, Japan. |
| 283 km (176 mi) NW from epicenter |
Osaka Ōsaka, Japan. |
| 283 km (176 mi) WNW from epicenter |
Wakayama Wakayama, Japan. |
| 283 km (176 mi) NNE from epicenter |
Fujisawa Kanagawa, Japan. |
| 284 km (176 mi) WNW from epicenter |
Minato Wakayama, Japan. |
| 285 km (177 mi) NW from epicenter |
Takatsuki Ōsaka, Japan. |
| 286 km (178 mi) NW from epicenter |
Ibaraki Ōsaka, Japan. |
| 286 km (178 mi) NW from epicenter |
Suita Ōsaka, Japan. |
| 286 km (178 mi) N from epicenter |
Kōfu Yamanashi, Japan. |
| 286 km (178 mi) NNE from epicenter |
Yokosuka Kanagawa, Japan. |
| 289 km (180 mi) NW from epicenter |
Kyoto Kyoto, Japan. |
| 291 km (181 mi) NW from epicenter |
Toyonaka Ōsaka, Japan. |
| 291 km (181 mi) NW from epicenter |
Amagasaki Hyōgo, Japan. |
| 297 km (185 mi) NW from epicenter |
Nishinomiya-hama Hyōgo, Japan. |
| 299 km (186 mi) NNE from epicenter |
Yokohama Kanagawa, Japan. |
Shaking reported by 2 people
People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 2 people have reported shaking in 2 places in 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:
- Fujisawa, Kanagawa, Japan: 1 person.
- Ōsaka, Ōsaka, Japan: 1 person.
Risk of aftershocks?
We monitor for foreshocks or aftershocks that have a magnitude of 2.5+ and occur within 100km (62 mi) of the epicenter of this earthquake. So far no such earthquakes have been detected.
Earthquakes can create aftershocks. These are generally at least 1 magnitude lower than any main shock, and as time passes the chance and strength of aftershocks decreases.
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. This is the strongest earthquake to hit since December 12th, 2025, when a 5.3 magnitude earthquake hit 97 km (60 mi) further south-southwest. An even stronger magnitude 6.3 earthquake struck on July 27th, 2019.
In total, 30 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 4 months.
Tsunami very unlikely
For a serious tsunami to occur, earthquakes usually need to have a magnitude of at least 6.5 and occur at a shallow depth of maximum 100km. Neither are the case with this earthquake. 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 under the sea. | Not this earthquake. This earthquake had a magnitude of 5.2. Earthquakes of this strength are unlikely to trigger a tsunami. |
Not this earthquake. This earthquake occurred at a depth of 337 km (209 mi). Earthquakes this deep in the earth are unlikely to trigger a tsunami. |
Sources
Last updated 27/12/25 09:28 (). 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.
- US Geographic Society (USGS): Earthquake us7000rkbm
- European-Mediterranean Seismological Centre (EMSC): Earthquake 20251223_0000112
- Geonames.org: World Cities Database
- Google Maps: Static API
- Earthquakelist.org: Historic Earthquakes Database
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