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M4.1 Earthquake near Tatitlek, United States — 19 July 2025, 19:34 UTC

A light earthquake of magnitude 4.1 was recorded near Tatitlek, United States on , with an epicentre 14 km west-northwest of Tatitlek, at a focal depth of 19.2 km. It ranked as the 47th strongest of 8054 earthquakes recorded in the United States in the preceding 30 days.

4.1 Light

Time (UTC): 2025-07-19 19:34:44

Time (your timezone): —

Magnitude: 4.1 (light)

Focal depth: 19.2 km (shallow)

Epicentre: 60.9332, -146.9070

Location: 14 km WNW of Tatitlek, Alaska

Country: United States

USGS link to NOAA tsunami information: Available

Review status: Reviewed

Source: USGS event page

How strong was this earthquake?

Light earthquakes are widely felt near the epicentre and can rattle windows, dishes and hanging objects. Damage is uncommon and usually limited to cracked plaster or fallen loose items.

A magnitude 4.1 earthquake radiates roughly 21 tons of TNT equivalent in seismic energy.

The USGS assigns this earthquake a significance score of 267, 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 →

When it happened locally

That is about 09:47 local solar time at the epicentre, during the morning.

This event was deeper than 85% of the 157,592 earthquakes recorded in the United States in our catalogue and stronger than 99% of them.

Where was the epicentre?

The epicentre was located at 60.9332, -146.9070 — 14 km west-northwest of Tatitlek. The closest other recorded event was a magnitude 1.4 earthquake 18 km north-northwest of here on 11 September 2026.

The nearest other settlements in our records are Anchorage (109 km west), Bear Creek (137 km southwest), Chase (206 km north-northwest) and Cantwell (210 km north-northwest).

Why the 19 km depth matters

At 19 km this was a shallow earthquake. Shallow events release their energy close to the surface, so for a given magnitude they produce noticeably stronger shaking — and more damage — than deeper ones. Roughly three quarters of all earthquakes worldwide occur at shallow depths.

This catalogue does not ingest eyewitness responses, so it cannot confirm where this earthquake was felt. Based on magnitude alone, an event this size is often felt across the surrounding area. Its shallow focus makes stronger surface shaking more likely than for a deeper event of the same magnitude.

Read more on how focal depth changes what you feel →

What does the tsunami information flag mean?

The USGS event record links to NOAA tsunami information because this was a large event in an oceanic region. That link flag does not mean a tsunami occurred or that a warning is active. Check tsunami.gov and instructions from your local authority for the current status of your coastline.

How earthquakes generate tsunamis, and what the alert levels mean →

Aftershocks and local seismic history

24 further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event, the largest of them magnitude 2.5.

7 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 5.3 event near Cordova on 29 June 2026. This M4.1 event released about 63 times less energy than that event.

597 earthquakes have been recorded within 100 km of this epicentre in the past year, 62 of them in the past 30 days.

How long aftershock sequences last, and how large they get →

Where this event sits in the record

This earthquake is part of the July 2025 worldwide record, and of earthquakes in the United States during July 2025. Browse the full monthly archive to compare periods.

Nearest recorded earthquakes to this epicentre

Other recent earthquakes in the United States

All recorded earthquakes in the United States →

Other magnitude 4 earthquakes worldwide

All magnitude 4 earthquakes →

Questions about this earthquake

How strong was the earthquake near Tatitlek?

It measured magnitude 4.1 — a light earthquake. A magnitude 4.1 earthquake radiates roughly 21 tons of TNT equivalent in seismic energy.

How deep was the earthquake near Tatitlek?

The focus was 19 km below the surface, which counts as shallow.

Was the Tatitlek earthquake felt at the surface?

At magnitude 4.1 and a focal depth of 19 km, shaking would have been concentrated near the epicentre.

When did the earthquake near Tatitlek happen?

19 July 2025 at 19:34 UTC.

Was there a tsunami?

The USGS record carries a link to NOAA tsunami information for this event. That is not a warning: check your regional tsunami warning centre for any live alert.

Have there been aftershocks?

24 further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event, the largest of them magnitude 2.5.

How often do earthquakes happen near Tatitlek?

7 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 5.3 event near Cordova on 29 June 2026. This M4.1 event released about 63 times less energy than that event.