Rat Islands, Aleutian Islands, Alaska

2026-04-04 09:39:52 UTC (8 hours ago)

Loading map...

Earthquake Details

Magnitude

4.5 mb

Depth

40.7 km

Shallow

Location

51.2538°N
178.7954°E

Intensity (MMI)

2.9

Weak

Technical Information

Event ID

us6000smis

Event Type

earthquake

Status

✓ Reviewed

Significance

312

Stations Used

Azimuthal Gap

186.0°

Min Station Distance

0.342°

RMS Residual

0.88 sec

Last Updated

2026-04-04 09:56:46 UTC

Nearby Earthquakes (Last 7 Days)

4.6

220 km ESE of Attu Station, Alaska

1 days ago · 35.0 km deep

4.2

232 km ESE of Attu Station, Alaska

1 days ago · 10.0 km deep

4.0

294 km SE of Attu Station, Alaska

1 days ago · 10.0 km deep

5.1

223 km ESE of Attu Station, Alaska

1 days ago · 10.0 km deep

4.0

232 km ESE of Attu Station, Alaska

1 days ago · 40.2 km deep

2.5

47 km SSW of Adak, Alaska

1 days ago · 19.1 km deep

2.7

167 km SSE of Adak, Alaska

2 days ago · 20.0 km deep

3.1

78 km SSW of Adak, Alaska

3 days ago · 28.9 km deep

2.6

80 km SSE of Adak, Alaska

4 days ago · 35.0 km deep

3.4

58 km S of Atka, Alaska

4 days ago · 14.0 km deep

Actions

View on USGS Did You Feel It?

Location

Alaska

View all Alaska earthquakes

Understanding This Data

Magnitude 4.5 earthquakes are often felt but rarely cause damage.

Shallow depth (40.7 km): Shallow earthquakes often cause more damage at the surface.

Learn more about magnitude →

Be Prepared

Earthquakes can happen without warning. Make sure you know what to do.

→ What to do during an earthquake → Create an emergency plan → Emergency kit essentials