Earthquake.now

M1.4 Earthquake near Nanwalek, Alaska — 29 July 2026

A micro earthquake of magnitude 1.4 was recorded near Nanwalek, Alaska on , with an epicentre 63 km west-northwest of Nanwalek, at a focal depth of 111.0 km.

1.4 Micro

Time (UTC): 2026-07-29 19:07:29

Time (your timezone): —

Magnitude: 1.4 (micro)

Focal depth: 111.0 km (intermediate)

Epicentre: 59.6000, -152.9300

Location: 63 km WNW of Nanwalek, Alaska

USGS link to NOAA tsunami information: Not linked

Review status: Automatic

Source: USGS event page

How strong was this earthquake?

Micro earthquakes are almost never felt at the surface and are recorded only by seismographs.

A magnitude 1.4 earthquake radiates roughly 1.9 kg of TNT equivalent in seismic energy.

The USGS assigns this earthquake a significance score of 30, 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.

What the magnitude scale actually measures →

Where was the epicentre?

The epicentre was located at 59.6000, -152.9300 — 63 km west-northwest of Nanwalek. The closest other recorded event was a magnitude 1.7 earthquake 17 km northeast of here on 30 July 2026.

Why the 111 km depth matters

At 111 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, events this small are usually detected by instruments rather than people. Its intermediate depth normally reduces peak shaking near the epicentre compared with a shallow event of the same magnitude.

Read more on how focal depth changes what you feel →

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 M1.4 it falls below the magnitude 6.5 threshold that generally applies before a submarine earthquake displaces enough water to generate a damaging tsunami; its 111 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

33 further earthquakes have been recorded within about 150 km of the epicentre in the 3 days since this event, the largest of them magnitude 2.5.

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 M1.4 event released about 177,828 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 July 2026 worldwide record. Browse the full monthly archive to compare periods.

Nearest recorded earthquakes to this epicentre

Other magnitude 1 earthquakes worldwide

Questions about this earthquake

How strong is a magnitude 1.4 earthquake?

Micro earthquakes are almost never felt at the surface and are recorded only by seismographs. A magnitude 1.4 earthquake radiates roughly 1.9 kg of TNT equivalent in seismic energy.

How deep was the earthquake near Nanwalek?

At 111 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 M1.4 earthquake near Nanwalek felt?

This catalogue does not ingest eyewitness responses, so it cannot confirm where this earthquake was felt. Based on magnitude alone, events this small are usually detected by instruments rather than people. 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 M1.4 it falls below the magnitude 6.5 threshold that generally applies before a submarine earthquake displaces enough water to generate a damaging tsunami; its 111 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?

33 further earthquakes have been recorded within about 150 km of the epicentre in the 3 days since this event, the largest of them magnitude 2.5.

How often do earthquakes happen near Nanwalek?

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 M1.4 event released about 177,828 times less energy than that event.