Significant M5.5 Earthquake hit in the North Pacific Ocean near Mito (Japan) on Saturday Evening.

Written by Earthquakelist.org on November 7th, 2026.

In the North Pacific Ocean 91 kilometer from Mito, Japan, a significant M5.5 earthquake occurred in the evening of Saturday November 7th, 2026. Roughly 2.1 million people may have felt this earthquake.

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Earthquake Summary

This earthquake hit under water in the North Pacific Ocean, 83 kilometers (52 mi) off the coast of Japan, 91 kilometer east of Mito in Ibaraki. The center of this earthquake had a quite shallow depth of 32 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	Nov 7, 2026 20:07 (Tokyo Time) - Nov 7, 2026 11:07 Universal Time.
Location:	91 km east of Mito, Ibaraki, Japan. Coordinates 36°11'18"N 141°26'25"E.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 5.5 Detected by 22 stations. Maximum Error Range ±0.066 .
Depth:	32 km (20 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 90% likelyhood of between 0 and 1 fatalities.

The USGS classifies the economic impact of this earthquake at level GREEN (low). They expect an 90% likelyhood of between 0 and 1 million US Dollars in economic damage and impact.

Roughly 2.1 million people exposed to shaking

This earthquake may have been felt by around 2.1 million people. That is the expected population size of the area exposed to a level of shaking of II or higher on the Modified Mercalli scale according to the USGS.

Light shaking and likely no damage may have been experienced by an estimated 1,673,000 people. At IV, it is the highest MMI level this earthquake has caused. All exposure to shaking was within the borders of Japan .

Nearby towns and cities

This earthquake may have been felt in Japan . The closest significant population center near the earthquake is Hasaki in Chiba, Japan. Hasaki is located 74 kilometer (46 mi) north-east of the epicenter. The intensity of shaking and damage in Hasaki is estimated to be around level IV on the Modified Mercalli Intensity scale (light shaking, likely no damage).

Multiple large cities are in proximity of today's earthquake. Tokyo is located 167 km to the west (intensity unknown, possibly low). Yokohama is located 182 km to the southwest (intensity unknown, possibly low). Kawasaki is located 172 km to the southwest (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

Earthquake Intensity Map

The maximum intensity (MMI Scale) caused by this earthquake is IV. 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

Risk of aftershocks?

We have not yet detected any foreshocks or aftershocks (MAG-2.5 or higher) within 100km (62 mi) of this earthquake.

Aftershocks are usually at least 1 order of magnitude less strong than main shocks. The more time passes, the smaller the chance and likely strength of any potential aftershocks.

In only six percent of cases, significant earthquakes are followed by a larger main shock, making the current earthquake a foreshock. While the chance of this happening is not so large, it is adviced to maintain cautiousness in the hours and days following a major earthquake.

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 November 6th, 2026, when a 6.1 magnitude earthquake hit 149 km (93 mi) further south-east. An even stronger magnitude 7.3 earthquake struck on March 16th, 2022.

In total, 46 earthquakes with a magnitude of 5.5 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 3 months.

Low tsunami risk

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

Sources

Last updated 07/11/26 14:38 (). 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.

1. US Geographic Society (USGS): Earthquake us7000twrq
2. European-Mediterranean Seismological Centre (EMSC): Earthquake 20261107_0000118
3. Geonames.org: World Cities Database
4. Google Maps: Static API
5. Earthquakelist.org: Historic Earthquakes Database

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