In the Philippine Sea 175 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, 160 kilometers (100 mi) off the coast of Japan, 175 kilometer south of Hamamatsu in Shizuoka. The center of this earthquake had a deep depth of 334 km.
| Date and Time: | Dec 23, 2025 18:44 (Tokyo Time) - Dec 23, 2025 09:44 Universal Time. |
|---|---|
| Location: | 175 km south of Hamamatsu, Shizuoka, Japan. Coordinates 33°7'27"N 137°46'30"E. |
| Map: |  Map of area around epicenter. Click to open in Google Maps. |
| Magnitude: | MAG 5.2 Detected by 26 stations. Maximum Error Range ±0.061 . |
| Depth: | 334 km (208 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 169 kilometer (105 mi) south-southwest 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. Osaka is located 273 km to the northwest. Nagoya is located 242 km to the north-northwest. Kyoto is located 281 km to the northwest.
A complete list of nearby places is included below.
Overview of nearby places
| Distance | Place |
|---|---|
| 169 km (105 mi) NNE from epicenter |
Ōyama Shizuoka, Japan. |
| 175 km (109 mi) N from epicenter |
Hamamatsu Shizuoka, Japan. |
| 175 km (109 mi) N from epicenter |
Iwata Shizuoka, Japan. |
| 177 km (110 mi) N from epicenter |
Kosai Shizuoka, Japan. |
| 178 km (111 mi) N from epicenter |
Kikugawa Shizuoka, Japan. |
| 178 km (111 mi) NNW from epicenter |
Tahara Aichi, Japan. |
| 181 km (112 mi) NW from epicenter |
Ise Mie, Japan. |
| 181 km (112 mi) N from epicenter |
Fukuroi Shizuoka, Japan. |
| 184 km (114 mi) N from epicenter |
Kakegawa Shizuoka, Japan. |
| 186 km (116 mi) N from epicenter |
Hamakita Shizuoka, Japan. |
| 186 km (116 mi) NNW from epicenter |
Toyohashi Aichi, Japan. |
| 191 km (119 mi) N from epicenter |
Toyokawa Aichi, Japan. |
| 192 km (119 mi) N from epicenter |
Shimada Shizuoka, Japan. |
| 196 km (122 mi) NNW from epicenter |
Gamagōri Aichi, Japan. |
| 199 km (124 mi) NNE from epicenter |
Fujieda Shizuoka, Japan. |
| 200 km (124 mi) NNE from epicenter |
Yaizu Shizuoka, Japan. |
| 211 km (131 mi) NNW from epicenter |
Okazaki Aichi, Japan. |
| 213 km (132 mi) NNW from epicenter |
Tsu Mie, Japan. |
| 214 km (133 mi) NNW from epicenter |
Anjō Aichi, Japan. |
| 214 km (133 mi) NNE from epicenter |
Shizuoka Shizuoka, Japan. |
| 219 km (136 mi) NNW from epicenter |
Kariya Aichi, Japan. |
| 224 km (139 mi) NNW from epicenter |
Suzuka Mie, Japan. |
| 225 km (140 mi) NNW from epicenter |
Toyota Aichi, Japan. |
| 231 km (144 mi) NNW from epicenter |
Yokkaichi Mie, Japan. |
| 242 km (150 mi) NNE from epicenter |
Fuji Shizuoka, Japan. |
| 242 km (150 mi) NNE from epicenter |
Numazu Shizuoka, Japan. |
| 242 km (150 mi) NNW from epicenter |
Nagoya Aichi, Japan. |
| 247 km (153 mi) NNW from epicenter |
Kasugai Aichi, Japan. |
| 251 km (156 mi) NW from epicenter |
Nara-shi Nara, Japan. |
| 258 km (160 mi) NNW from epicenter |
Ichinomiya Aichi, Japan. |
| 260 km (162 mi) NW from epicenter |
Yao Ōsaka, Japan. |
| 266 km (165 mi) N from epicenter |
Iida Nagano, Japan. |
| 268 km (167 mi) WNW from epicenter |
Kishiwada Ōsaka, Japan. |
| 268 km (167 mi) NW from epicenter |
Sakai Ōsaka, Japan. |
| 269 km (167 mi) NW from epicenter |
Neyagawa Ōsaka, Japan. |
| 269 km (167 mi) NNE from epicenter |
Odawara Kanagawa, Japan. |
| 271 km (168 mi) WNW from epicenter |
Minato Wakayama, Japan. |
| 271 km (168 mi) WNW from epicenter |
Wakayama Wakayama, Japan. |
| 271 km (168 mi) NW from epicenter |
Hirakata Ōsaka, Japan. |
| 272 km (169 mi) NNW from epicenter |
Gifu-shi Gifu, Japan. |
| 273 km (170 mi) NW from epicenter |
Ōtsu Shiga, Japan. |
| 273 km (170 mi) NW from epicenter |
Osaka Ōsaka, Japan. |
| 276 km (171 mi) NW from epicenter |
Takatsuki Ōsaka, Japan. |
| 277 km (172 mi) NW from epicenter |
Suita Ōsaka, Japan. |
| 277 km (172 mi) NW from epicenter |
Ibaraki Ōsaka, Japan. |
| 281 km (175 mi) NW from epicenter |
Toyonaka Ōsaka, Japan. |
| 281 km (175 mi) NW from epicenter |
Amagasaki Hyōgo, Japan. |
| 281 km (175 mi) NW from epicenter |
Kyoto Kyoto, Japan. |
| 283 km (176 mi) NE from epicenter |
Tateyama Chiba, Japan. |
| 284 km (176 mi) NNE from epicenter |
Hiratsuka Kanagawa, Japan. |
| 287 km (178 mi) NW from epicenter |
Nishinomiya-hama Hyōgo, Japan. |
| 292 km (181 mi) NNE from epicenter |
Kōfu Yamanashi, Japan. |
| 293 km (182 mi) NNE from epicenter |
Fujisawa Kanagawa, Japan. |
| 296 km (184 mi) NW from epicenter |
Kobe Hyōgo, Japan. |
| 297 km (185 mi) NE from epicenter |
Yokosuka 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 85 km (53 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 334 km (208 mi). Earthquakes this deep in the earth are unlikely to trigger a tsunami. |
Sources
Last updated 21/01/26 00:38 (). 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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