M4.3 Earthquake near Beluga, Alaska — 19 April 2025
A light earthquake of magnitude 4.3 was recorded near Beluga, Alaska on , with an epicentre 20 km west of Beluga, at a focal depth of 83.3 km.
Time (UTC): 2025-04-19 07:18:55
Time (your timezone): —
Magnitude: 4.3 (light)
Focal depth: 83.3 km (intermediate)
Epicentre: 61.1688, -151.4680
Location: 20 km W of Beluga, Alaska
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 4.3 earthquake radiates roughly 43 tons of TNT equivalent in seismic energy.
The USGS assigns this earthquake a significance score of 694, which meets 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 61.1688, -151.4680 — 20 km west of Beluga. The closest other recorded event was a magnitude 1.6 earthquake 8 km east of here on 31 July 2026.
Why the 83 km depth matters
At 83 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 is often felt across the surrounding area. 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 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
134 further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event, the largest of them magnitude 4.5.
45 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 6.0 event near Susitna on 27 November 2025. This M4.3 event released about 355 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 April 2025 worldwide record. Browse the full monthly archive to compare periods.
Nearest recorded earthquakes to this epicentre
- M1.6 earthquake near Beluga, Alaska — (8 km E)
- M0.2 earthquake near Beluga, Alaska — (25 km NNW)
- M1.7 earthquake near Tyonek, Alaska — (30 km SE)
- M1.4 earthquake near Beluga, Alaska — (30 km NNE)
- M2.1 earthquake near Beluga, Alaska — (37 km NE)
- M1.0 earthquake near Tyonek, Alaska — (39 km W)
- M-0.1 earthquake near Tyonek, Alaska — (40 km WNW)
- M-0.5 earthquake near Beluga, Alaska — (41 km WNW)
- M1.5 earthquake near Susitna, Alaska — (41 km NE)
- M-0.4 earthquake near Beluga, Alaska — (45 km WNW)
Other magnitude 4 earthquakes worldwide
- M4.4 earthquake near Cartagena, Chile —
- M4.4 earthquake near El Arenal, Mexico —
- M4.3 earthquake near Puerto Madero, Mexico —
- M4.4 earthquake near Fiji region —
- M4.5 earthquake near Abepura, Indonesia —
- M4.1 earthquake near Charlotte Amalie, U.S. Virgin Islands —
- M4.0 earthquake near Charlotte Amalie, U.S. Virgin Islands —
- M4.6 earthquake near Honmachi, Japan —
Questions about this earthquake
How strong is a magnitude 4.3 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 4.3 earthquake radiates roughly 43 tons of TNT equivalent in seismic energy.
How deep was the earthquake near Beluga?
At 83 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 M4.3 earthquake near Beluga 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 is often felt across the surrounding area. 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 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.
Have there been aftershocks?
134 further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event, the largest of them magnitude 4.5.
How often do earthquakes happen near Beluga?
45 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 6.0 event near Susitna on 27 November 2025. This M4.3 event released about 355 times less energy than that event.