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M0.6 Earthquake near Bainbridge Island, United States — 15 October 2026

A micro earthquake of magnitude 0.6 was recorded near Bainbridge Island, United States on , with an epicentre 3 km south-southwest of Bainbridge Island, at a focal depth of 18.9 km. It ranked as the 5409th strongest of 6577 earthquakes recorded in the United States in the preceding 30 days.

0.6 Micro

Time (UTC): 2026-10-15 22:50:07

Time (your timezone): —

Magnitude: 0.6 (micro)

Focal depth: 18.9 km (shallow)

Epicentre: 47.5992, -122.5360

Location: 3 km SSW of Bainbridge Island, Washington

Country: United States

USGS link to NOAA tsunami information: Not linked

Review status: Reviewed

Source: USGS event page

How strong was this earthquake?

Micro earthquakes are almost never felt at the surface and are recorded only by seismographs.

A magnitude 0.6 earthquake radiates roughly 0.14 kg of TNT equivalent in seismic energy.

The USGS assigns this earthquake a significance score of 6, which is below the USGS threshold of more than 600 for its significant-earthquake list. The ranking combines magnitude with available Did You Feel It responses and PAGER alert level; it is not a direct measurement of damage.

What the magnitude scale actually measures →

When it happened locally

That is about 14:39 local solar time at the epicentre, during the afternoon.

This event was deeper than 84% of the 162,966 earthquakes recorded in the United States in our catalogue and stronger than 16% of them.

Where was the epicentre?

The epicentre was located at 47.5992, -122.5360 — 3 km south-southwest of Bainbridge Island. The closest other recorded event was a magnitude 0.7 earthquake 13 km west of here on 14 October 2026.

The nearest other settlements in our records are Allyn (30 km southwest), Alder (102 km south), Amanda Park (107 km west) and Alger (110 km north).

Why the 19 km depth matters

At 19 km this was a shallow earthquake. Shallow events release their energy close to the surface, so for a given magnitude they produce noticeably stronger shaking — and more damage — than deeper ones. Roughly three quarters of all earthquakes worldwide occur at shallow depths.

This catalogue does not ingest eyewitness responses, so it cannot confirm where this earthquake was felt. Based on magnitude alone, events this small are usually detected by instruments rather than people. Its shallow focus makes stronger surface shaking more likely than for a deeper event of the same magnitude.

Read more on how focal depth changes what you feel →

What does the tsunami information flag mean?

The USGS record does not carry a link to NOAA tsunami information. That field is not an all-clear and does not state whether a tsunami occurred. In this case, a damaging tsunami would be less likely because at M0.6 it falls below the magnitude 6.5 threshold that generally applies before a submarine earthquake displaces enough water to generate a damaging tsunami. For an active coastal alert, use tsunami.gov or your local warning authority.

How earthquakes generate tsunamis, and what the alert levels mean →

Aftershocks and local seismic history

7 further earthquakes have been recorded within about 150 km of the epicentre in the 21 hours since this event, the largest of them magnitude 1.4.

3 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 4.5 event near Orcas on 03 March 2025. This M0.6 event released about 575,440 times less energy than that event.

1017 earthquakes have been recorded within 100 km of this epicentre in the past year, 108 of them in the past 30 days.

How long aftershock sequences last, and how large they get →

Where this event sits in the record

This earthquake is part of the October 2026 worldwide record, and of earthquakes in the United States during October 2026. Browse the full monthly archive to compare periods.

Nearest recorded earthquakes to this epicentre

Other recent earthquakes in the United States

All recorded earthquakes in the United States →

Other magnitude 0 earthquakes worldwide

Questions about this earthquake

How strong was the earthquake near Bainbridge Island?

It measured magnitude 0.6 — a micro earthquake. A magnitude 0.6 earthquake radiates roughly 0.14 kg of TNT equivalent in seismic energy.

How deep was the earthquake near Bainbridge Island?

The focus was 19 km below the surface, which counts as shallow.

Was the Bainbridge Island earthquake felt at the surface?

At magnitude 0.6 and a focal depth of 19 km, shaking would have been concentrated near the epicentre.

When did the earthquake near Bainbridge Island happen?

15 October 2026 at 22:50 UTC.

Was there a tsunami?

No. The USGS record carries no tsunami-information link for this event.

Have there been aftershocks?

7 further earthquakes have been recorded within about 150 km of the epicentre in the 21 hours since this event, the largest of them magnitude 1.4.

How often do earthquakes happen near Bainbridge Island?

3 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 4.5 event near Orcas on 03 March 2025. This M0.6 event released about 575,440 times less energy than that event.