M3.8 Earthquake near Pedro Bay, Alaska — 06 August 2026
A minor earthquake of magnitude 3.8 was recorded near Pedro Bay, Alaska on , with an epicentre 65 km east-southeast of Pedro Bay, at a focal depth of 102.0 km.
Time (UTC): 2026-08-06 09:38:57
Time (your timezone): —
Magnitude: 3.8 (minor)
Focal depth: 102.0 km (intermediate)
Epicentre: 59.6280, -152.9790
Location: 65 km ESE of Pedro Bay, Alaska
USGS link to NOAA tsunami information: Not linked
Review status: Automatic
Source: USGS event page
How strong was this earthquake?
Minor earthquakes in this range are felt by people close to the epicentre as a brief jolt or rattle, but they very rarely cause any damage.
A magnitude 3.8 earthquake radiates roughly 7.6 tons of TNT equivalent in seismic energy.
The USGS assigns this earthquake a significance score of 224, which is below the USGS threshold of more than 600 for its significant-earthquake list. The ranking combines magnitude with available Did You Feel It responses and PAGER alert level; it is not a direct measurement of damage.
Where was the epicentre?
The epicentre was located at 59.6280, -152.9790 — 65 km east-southeast of Pedro Bay. The closest other recorded event was a magnitude 1.4 earthquake 7 km south-southwest of here on 06 August 2026.
Why the 102 km depth matters
At 102 km this was an intermediate-depth earthquake. Energy from events at this depth spreads out before it reaches the surface, which usually means weaker shaking near the epicentre than a shallow quake of the same magnitude, but shaking felt across a wider area.
This catalogue does not ingest eyewitness responses, so it cannot confirm where this earthquake was felt. Based on magnitude alone, an event this size may be noticed locally, especially close to the epicentre. Its intermediate depth normally reduces peak shaking near the epicentre compared with a shallow event of the same magnitude.
What does the tsunami information flag mean?
The USGS record does not carry a link to NOAA tsunami information. That field is not an all-clear and does not state whether a tsunami occurred. In this case, a damaging tsunami would be less likely because at M3.8 it falls below the magnitude 6.5 threshold that generally applies before a submarine earthquake displaces enough water to generate a damaging tsunami; its 102 km focal depth is too great to deform the sea floor significantly; it occurred inland rather than beneath the sea floor. For an active coastal alert, use tsunami.gov or your local warning authority.
How earthquakes generate tsunamis, and what the alert levels mean →
Aftershocks and local seismic history
2 further earthquakes have been recorded within about 150 km of the epicentre in the 11 hours since this event, the largest of them magnitude 2.3.
32 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 4.9 event near Clam Gulch on 27 June 2026. This M3.8 event released about 45 times less energy than that event.
How long aftershock sequences last, and how large they get →
Where this event sits in the record
This earthquake is part of the August 2026 worldwide record. Browse the full monthly archive to compare periods.
Nearest recorded earthquakes to this epicentre
- M1.4 earthquake near Nanwalek, Alaska — (7 km SSW)
- M1.6 earthquake near Nanwalek, Alaska — (22 km ESE)
- M1.2 earthquake near Nanwalek, Alaska — (26 km SE)
- M2.3 earthquake near Pedro Bay, Alaska — (29 km NW)
- M2.0 earthquake near Anchor Point, Alaska — (30 km N)
- M1.7 earthquake near Anchor Point, Alaska — (31 km NNE)
- M1.6 earthquake near Nanwalek, Alaska — (34 km ESE)
- M1.7 earthquake near Nanwalek, Alaska — (35 km SE)
- M1.9 earthquake near Anchor Point, Alaska — (42 km ENE)
- M-0.7 earthquake near Pedro Bay, Alaska — (42 km N)
Other magnitude 3 earthquakes worldwide
- M3.9 earthquake near Attu Station, Alaska —
- M4.0 earthquake near Attu Station, Alaska —
- M4.1 earthquake near Gold Beach, Oregon —
- M4.1 earthquake near Corinto, Nicaragua —
- M3.6 earthquake near Perryville, Alaska —
- M3.9 earthquake near Perryville, Alaska —
- M4.0 earthquake near Oula Xiuma, China —
- M3.9 earthquake near Covelo, CA —
Questions about this earthquake
How strong is a magnitude 3.8 earthquake?
Minor earthquakes in this range are felt by people close to the epicentre as a brief jolt or rattle, but they very rarely cause any damage. A magnitude 3.8 earthquake radiates roughly 7.6 tons of TNT equivalent in seismic energy.
How deep was the earthquake near Pedro Bay?
At 102 km this was an intermediate-depth earthquake. Energy from events at this depth spreads out before it reaches the surface, which usually means weaker shaking near the epicentre than a shallow quake of the same magnitude, but shaking felt across a wider area.
Was the M3.8 earthquake near Pedro Bay felt?
This catalogue does not ingest eyewitness responses, so it cannot confirm where this earthquake was felt. Based on magnitude alone, an event this size may be noticed locally, especially close to the epicentre. Its intermediate depth normally reduces peak shaking near the epicentre compared with a shallow event of the same magnitude.
What does the USGS tsunami field mean for this event?
The USGS record does not carry a link to NOAA tsunami information. That field is not an all-clear and does not state whether a tsunami occurred. In this case, a damaging tsunami would be less likely because at M3.8 it falls below the magnitude 6.5 threshold that generally applies before a submarine earthquake displaces enough water to generate a damaging tsunami; its 102 km focal depth is too great to deform the sea floor significantly; it occurred inland rather than beneath the sea floor. For an active coastal alert, use tsunami.gov or your local warning authority.
Have there been aftershocks?
2 further earthquakes have been recorded within about 150 km of the epicentre in the 11 hours since this event, the largest of them magnitude 2.3.
How often do earthquakes happen near Pedro Bay?
32 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 4.9 event near Clam Gulch on 27 June 2026. This M3.8 event released about 45 times less energy than that event.