Significant M5.8 Earthquake struck on Saturday Night in the North Pacific Ocean near Nemuro (Japan).

Written by Earthquakelist.org on October 24th, 2025. Last updated November 8th, 2025.

A significant M5.8 earthquake struck in the North Pacific Ocean 36 kilometer from Nemuro, Japan in the night of Saturday October 25th, 2025. Shaking may have been felt by a total of 620 thousand people.

Earthquake Summary

This earthquake hit under water in the North Pacific Ocean, 23 kilometers (14 mi) off the coast of Japan, 36 kilometer south of Nemuro in Hokkaido. The center of this earthquake had a quite shallow depth of 41 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	Oct 25, 2025 01:40 (Tokyo Time) - Oct 24, 2025 16:40 Universal Time.
Location:	36 km south of Nemuro, Hokkaido, Japan. Coordinates 43°0'15"N 145°38'15"E.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 5.8 Detected by 32 stations. Maximum Error Range ±0.055 .
Depth:	41 km (26 mi) A quite shallow depth.
Max. Intensity:	V Moderate On the Modified Mercalli Scale.
Tsunami Risk:	Low tsunami risk Earthquakes under MAG-6.5 do not usually cause tsunami's. Always stay cautious - More info here.

Minimal impact predicted

Based on scientific estimates by the US Geographic Survey (USGS), the risk of high fatalities for this earthquake is classified at level GREEN (low). They expect an 65% likelyhood of between 0 and 1 fatalities, and a 96% chance that the number of fatalities falls no higher than 10.

The USGS classifies the economic impact of this earthquake at level GREEN (low). They expect an 65% likelyhood of between 0 and 1 million US Dollars in economic damage and impact, and a 96% chance that the economic impact of this earthquake falls no higher than 10 million USD.

Roughly 620 thousand people exposed to shaking

An estimated 620 thousand have been exposed to shaking (An MMI or Modified Mercalli Intensity level II or higher) as a result of this earthquake according scientific estimates published by the USGS.

The highest earthquake impact level for this earthquake is V, which corresponds with moderate shaking and very light damage. Roughly 2,200 people are expected to be exposed to this level. Intensity level III was experienced by the majority of people (around 320 thousand). In their region, weak shaking and probably no damage can be expected.

People in 2 countries have been exposed to shaking. Roughly 600 thousand people were exposed to shaking in Japan , with level V (moderate shaking, very light damage) as the highest recorded. People were exposed to shaking in Russia as well.

People	MMI Level	Shaking	Damage
0	I	Not noticable	None
500	II	Very weak	None
316,800	III	Weak	Probably none
300,000	IV	Light	Likely none
2,200	V	Moderate	Very light
0	VI	Strong	Light
0	VII	Very Strong	Moderate
0	VIII	Severe	Moderate to heavy
0	IX	Violent	Heavy
0	X	Extreme	Very heavy

Nearby towns and cities

This earthquake may have been felt in Japan . The closest significant population center near the earthquake is Nemuro in Hokkaido, Japan. Nemuro is located 36 kilometer (22 mi) south of the epicenter. The intensity of shaking and damage in Nemuro is estimated to be around level IV on the Modified Mercalli Intensity scale (light shaking, likely no damage).

Major cities near this earthquake: Sapporo is located 349 km to the west (intensity unknown, possibly low). Kushiro is located 103 km to the west and experienced an intensity of IV (light shaking, likely no damage). Asahikawa is located 278 km to the west-northwest (intensity unknown, possibly low).

The table below provides an overview of all places in proximity of today's earthquake. Where available, the estimated intensity on the Modified Mercalli Intensity Scale in each place is included. Places where this information is omitted likely experienced little impact.

Overview of nearby places

Cities and Towns around the epicenter of this earthquake.
Distance	Place	Intensity (MMI)
36 km (22 mi) N from epicenter	Nemuro Hokkaido, Japan.	IV Light
81 km (50 mi) NW from epicenter	Nakashibetsu Hokkaido, Japan.	IV Light
83 km (52 mi) NNW from epicenter	Shibetsu Hokkaido, Japan.	IV Light
103 km (64 mi) W from epicenter	Kushiro Hokkaido, Japan.	IV Light
154 km (96 mi) NW from epicenter	Motomachi Hokkaido, Japan.	III Weak
158 km (98 mi) NW from epicenter	Abashiri Hokkaido, Japan.	III Weak
167 km (104 mi) WNW from epicenter	Kitami Hokkaido, Japan.	III Weak
198 km (123 mi) W from epicenter	Obihiro Hokkaido, Japan.
198 km (123 mi) W from epicenter	Otofuke Hokkaido, Japan.
237 km (147 mi) NW from epicenter	Mombetsu Hokkaido, Japan.	II Weak
267 km (166 mi) W from epicenter	Shimo-furano Hokkaido, Japan.
278 km (173 mi) WSW from epicenter	Shizunai-furukawachō Hokkaido, Japan.
278 km (173 mi) WNW from epicenter	Asahikawa Hokkaido, Japan.
285 km (177 mi) W from epicenter	Ashibetsu Hokkaido, Japan.
292 km (181 mi) WNW from epicenter	Minamishibetsuchō Hokkaido, Japan.
296 km (184 mi) WNW from epicenter	Nayoro Hokkaido, Japan.
301 km (187 mi) WNW from epicenter	Fukagawa Hokkaido, Japan.
307 km (191 mi) W from epicenter	Sunagawa Hokkaido, Japan.
308 km (191 mi) W from epicenter	Takikawa Hokkaido, Japan.
309 km (192 mi) W from epicenter	Bibai Hokkaido, Japan.
316 km (196 mi) W from epicenter	Iwamizawa Hokkaido, Japan.
325 km (202 mi) W from epicenter	Chitose Hokkaido, Japan.
331 km (206 mi) W from epicenter	Kitahiroshima Hokkaido, Japan.
332 km (206 mi) W from epicenter	Tomakomai Hokkaido, Japan.
332 km (206 mi) W from epicenter	Ebetsu Hokkaido, Japan.
335 km (208 mi) W from epicenter	Tōbetsu Hokkaido, Japan.
339 km (211 mi) WNW from epicenter	Rumoi Hokkaido, Japan.
349 km (217 mi) W from epicenter	Ishikari Hokkaido, Japan.
349 km (217 mi) W from epicenter	Sapporo Hokkaido, Japan.
354 km (220 mi) W from epicenter	Shiraoi Hokkaido, Japan.
377 km (234 mi) W from epicenter	Otaru Hokkaido, Japan.
388 km (241 mi) WSW from epicenter	Muroran Hokkaido, Japan.
394 km (245 mi) W from epicenter	Date Hokkaido, Japan.
396 km (246 mi) W from epicenter	Yoichi Hokkaido, Japan.

Earthquake Intensity Map

The maximum intensity (MMI Scale) caused by this earthquake is V. The map below shows in which areas this earthquake was the most and least impactful. It is based on data from the US Geographic Survey.

I Not felt

II Weak

III Weak

IV Light

V Moderate

VI Strong

VII Very Strong

VIII Severe

IX Violent

X Extreme

Earthquake Intensity Map based on Shakemap Data provided by USGS.

Shaking reported by 1 person

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 1 person has reported shaking in one place 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:

Shibetsu, Hokkaido, Japan: 1 person.

Aftershocks detected

This main shock was prefaced by 1 smaller foreshock. Nearby this earthquake a foreshock struck 2 days earlier. It measured a magnitude of 5.2

Overview of foreshocks and aftershocks

Detected MAG2.5+ earthquakes within within 100km (62 mi), that occurred in the three days before and after the main shock.
Classification	Magnitude	When	Where
Foreshock	M 5.2	2 days earlier Oct 22, 2025 18:17 (Tokyo Time)	21 km (13 mi) W from Main Shock.
Main Shock This Earthquake	M 5.8	Oct 25, 2025 01:40 (Tokyo Time)	-

More earthquakes coming?

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.

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 are common in the region

Earthquakes of this strength occur quite regularly in the region. This is the strongest earthquake to hit since June 21st, 2025, when a 6 magnitude earthquake hit 64 km (39 mi) further east. An even stronger magnitude 6.7 earthquake struck on January 14th, 2016.

In total, 12 earthquakes with a magnitude of 5.8 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 10 months.

Low tsunami risk

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.

Based on early data it appears this earthquake was not strong enough (lower than MAG-6.5) to be likely to cause destructive tsunami's. However this earthquake appeared to have hit at a shallow depth under sea, so 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 5.8. Earthquakes of this strength are unlikely to trigger a tsunami.	This earthquake occurred at a depth of of 41 km (26 mi). Earthquakes this shallow could trigger a tsunami.

Sources

Last updated 08/11/25 18:38 (). 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.