M 4.2 - 140 km WSW of Adak, Alaska
February 23, 2026 at 19:14:46 UTC
Depth: 35.00 km (Shallow)
Light
PAGER Alert
Tsunami
Felt Reports
Event Details
| Magnitude | 4.2 mb |
| Depth | 35.00 km (Shallow) |
| Location | 51.2180N, 178.3637W |
| Mercalli Intensity | III (Weak) |
| Tsunami Warning | No |
| Significance | 271 / 3000 |
| Status | Reviewed |
| Network | us |
| USGS Event Page | View on USGS → |
Frequently Asked Questions
What does magnitude 4.2 mean?
A magnitude 4.2 earthquake is classified as "Light". Light earthquakes produce noticeable shaking but rarely cause damage.
How deep was this earthquake?
This earthquake occurred at a depth of 35.00 km, classified as "Shallow". Shallow earthquakes tend to cause more damage at the surface.
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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.