M 7.1 - Rat Islands, Aleutian Islands, Alaska

Name: M 7.1 - Rat Islands, Aleutian Islands, Alaska
Start: 2003-03-17T16:36:17+00:00
Location: Rat Islands, Aleutian Islands, Alaska

March 17, 2003 at 16:36:17 UTC

Depth: 33.00 km (Shallow)

Key Takeaway

This major earthquake (M7.1) occurred 22 years ago near Rat Islands, Aleutian Islands, Alaska, at a depth of 33.00 km (shallow).

M 7.1

Major

N/A

PAGER Alert

Tsunami

N/A

Felt Reports

Event Details

Magnitude	7.1 mwb
Depth	33.00 km (Shallow)
Location	51.2720N, 177.9780E
Tsunami Warning	No
Significance	776 / 3000
Status	Reviewed
Network	us
USGS Event Page	View on USGS →

Frequently Asked Questions

What was the magnitude of this earthquake?

This earthquake had a magnitude of 7.1, classified as "Major". Major earthquakes can cause serious damage over large areas.

How deep was this earthquake?

This earthquake occurred at a depth of 33.00 km, classified as "Shallow". Shallow earthquakes tend to cause more damage at the surface because the energy has less distance to travel before reaching buildings and infrastructure.

Where exactly did this earthquake occur?

This earthquake occurred near Rat Islands, Aleutian Islands, Alaska, at coordinates 51.2720N, 177.9780E. The location is determined by analyzing seismic wave arrival times at multiple monitoring stations.

Were there aftershocks associated with this event?

Aftershock data for this specific event can be explored by viewing nearby recent earthquakes listed below on this page. Aftershocks are smaller earthquakes that occur in the same area following a larger event, and they can continue for days, weeks, or even months depending on the original earthquake's magnitude.

What does the magnitude of this earthquake mean in practical terms?

A magnitude 7.1 earthquake is classified as "Major" — these can cause serious damage to buildings and infrastructure across a wide area, especially near the epicenter.

Nearby Recent Earthquakes

M 4.0

159 km SSE of Attu Station, Alaska

22 years ago · 33.00 km deep

M 4.0