4.0

53 km ESE of Adak, Alaska

2026-02-17 23:17:00 UTC (1 days ago)

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Earthquake Details

Magnitude
4.0 mb
Depth
55.7 km
Shallow
Location
51.7184°N
-175.9052°E
Intensity (MMI)
3.6
Light

Technical Information

Event ID
us6000s9w6
Event Type
earthquake
Status
✓ Reviewed
Significance
246
Stations Used
44
Azimuthal Gap
119.0°
Min Station Distance
0.269°
RMS Residual
0.51 sec
Last Updated
2026-02-18 03:32:43 UTC

Nearby Earthquakes (Last 7 Days)

4.8
107 km SSW of Nikolski, Alaska
2 hours ago · 10.0 km deep
4.6
228 km W of Adak, Alaska
10 hours ago · 127.8 km deep
3.7
142 km ESE of Atka, Alaska
1 days ago · 5.0 km deep
4.6
136 km SW of Adak, Alaska
1 days ago · 10.0 km deep
3.2
78 km ESE of Adak, Alaska
1 days ago · 29.0 km deep
2.7
123 km WSW of Adak, Alaska
1 days ago · 12.7 km deep
3.0
35 km SE of Atka, Alaska
1 days ago · 84.9 km deep
3.5
Rat Islands, Aleutian Islands, Alaska
1 days ago · 69.0 km deep
3.7
37 km ENE of Adak, Alaska
2 days ago · 144.5 km deep
2.6
46 km WSW of Atka, Alaska
2 days ago · 110.2 km deep

Actions

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Location

Alaska
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Understanding This Data

Magnitude 4.0 earthquakes are often felt but rarely cause damage.

Shallow depth (55.7 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