M 4.3 - 51 km WNW of Nanwalek, Alaska

Name: M 4.3 - 51 km WNW of Nanwalek, Alaska
Start: 2003-05-20T17:09:08+00:00
Location: 51 km WNW of Nanwalek, Alaska

May 20, 2003 at 17:09:08 UTC

Depth: 82.60 km (Intermediate)

Key Takeaway

This light earthquake (M4.3) occurred 22 years ago near 51 km WNW of Nanwalek, Alaska, at a depth of 82.60 km (intermediate).

M 4.3

Light

N/A

PAGER Alert

Tsunami

N/A

Felt Reports

Event Details

Magnitude	4.3 mb
Depth	82.60 km (Intermediate)
Location	59.6040N, 152.6918W
Tsunami Warning	No
Significance	284 / 3000
Status	Reviewed
Network	ak
USGS Event Page	View on USGS →

Frequently Asked Questions

What was the magnitude of this earthquake?

This earthquake had a magnitude of 4.3, classified as "Light". Light earthquakes produce noticeable shaking but rarely cause damage.

How deep was this earthquake?

This earthquake occurred at a depth of 82.60 km, classified as "Intermediate". Intermediate-depth earthquakes are felt over a wider area but typically cause less surface damage than shallow events of the same magnitude.

Where exactly did this earthquake occur?

This earthquake occurred near 51 km WNW of Nanwalek, Alaska, at coordinates 59.6040N, 152.6918W. 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 4.3 earthquake is classified as "Light" — these are commonly felt by people indoors but rarely cause any significant damage.

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Data from the USGS Earthquake Hazards Program (ComCat). QuakeScan is not affiliated with the USGS. Event details may be updated as new data becomes available.