On Monday Night a Shallow M5.5 Earthquake struck in the North Pacific Ocean 144mi from Coos Bay (The United States).

Written by Earthquakelist.org on June 29th, 2026. Last updated June 30th, 2026.

In the North Pacific Ocean 144 miles from Coos Bay, The United States, a shallow and significant Magnitude 5.5 earthquake occurred in the night of Monday June 29th, 2026. Such earthquakes in regions like this usually have a minimal impact on people and the economy.

Earthquake Summary

This earthquake hit under water in the North Pacific Ocean, 180 miles (290 km) off the coast of The United States, 144 miles west of Coos Bay in Oregon. The center of this earthquake had a very shallow depth of 6 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	Jun 29, 2026 04:35AM (Los Angeles Time) - Jun 29, 2026 11:35 Universal Time.
Location:	144 mi west of Coos Bay, Oregon, The United States. Coordinates 43°22'58"N 127°4'44"W.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 5.5 Detected by 59 stations. Maximum Error Range ±0.033 .
Depth:	6 mi (10 km) A very shallow depth.
Max. Intensity:	IV Light 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.

Not many people felt this earthquake

The USGS has published a report estimating the number of people exposed to this earthquake. Acoording to their analysis, roughly 20 have been exposed to shaking at an MMI level of II or higher.

The highest earthquake impact level for this earthquake is III, which corresponds with weak shaking and probably no damage. Roughly 20 people are expected to be exposed to this level.

People	MMI Level	Shaking	Damage
0	I	Not noticable	None
0	II	Very weak	None
20	III	Weak	Probably none
0	IV	Light	Likely none
0	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 The United States . The closest significant population center near the earthquake is Coos Bay in Oregon, The United States. Coos Bay is located 144 miles (231 km) west of the epicenter.

Overview of nearby places

Cities and Towns around the epicenter of this earthquake.
Distance	Place
144 mi (231 km) E from epicenter	Coos Bay Oregon, The United States.

Earthquake Intensity Map

The intensity in shaking and damage by this earthquake is illustrated through the map below. The highest intensity measured for this earthquake is III.

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 6 people

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 6 people have reported shaking in 4 places, all within Canada.We keep updating this article as more ground reports become available. You may report that you felt this earthquake here.

Places with most reports:

Victoria, British Columbia, Canada: 3 people.
Abbotsford, British Columbia, Canada: 1 person.
Parksville, British Columbia, Canada: 1 person.
Sidney, British Columbia, Canada: 1 person.

2 Aftershocks detected

This main shock was followed by 2 smaller aftershocks. Just 1 hr after this main shock, an earthquake measuring MAG-3.9 was detected 10 mi (16 km) south-east of this earthquake.

In the days before this main shock, 1 smaller foreshock was detected. A 3.3 magnitude earthquake hit 2 days earlier nearby.

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 3.3	2 days earlier Jun 26, 2026 08:21PM (Los Angeles Time)	57 mi (92 km) W from Main Shock.
Main Shock This Earthquake	M 5.5	Jun 29, 2026 04:35AM (Los Angeles Time)	-
Aftershock	M 3.9	1 hr later Jun 29, 2026 05:47AM (Los Angeles Time)	10 mi (16 km) SE from Main Shock.
Aftershock	M 3.4	2 hrs later Jun 29, 2026 06:38AM (Los Angeles Time)	37 mi (59 km) SW 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.

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.

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 June 3rd, 2026, when a 5.7 magnitude earthquake hit 112 mi (180 km) further south-east. An even stronger magnitude 6.3 earthquake struck on August 29th, 2019.

In total, 23 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 5 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 5.5. Earthquakes of this strength are unlikely to trigger a tsunami.	This earthquake occurred at a depth of of 6 mi (10 km). Earthquakes this shallow could trigger a tsunami.

Sources

Last updated 30/06/26 18:08 (). 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.