M7.1 Earthquake near Uki, Japan — 28 July 2026
A major earthquake of magnitude 7.1 was recorded near Uki, Japan on , with an epicentre 4 km southeast of Uki, at a focal depth of 10.0 km.
Time (UTC): 2026-07-28 07:28:00
Time (your timezone): —
Magnitude: 7.1 (major)
Focal depth: 10.0 km (shallow)
Epicentre: 32.6000, 130.7000
Location: 4 km SE of Uki, Japan
USGS link to NOAA tsunami information: Not linked
Review status: Reviewed
Source: USGS event page
How strong was this earthquake?
Major earthquakes cause serious damage across wide regions and are capable of destroying buildings that were not designed for seismic loading. Events at this size frequently trigger long aftershock sequences lasting months.
A magnitude 7.1 earthquake radiates roughly 673,610 tons of TNT equivalent in seismic energy.
The USGS assigns this earthquake a significance score of 776, 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 32.6000, 130.7000 — 4 km southeast of Uki. The closest other recorded event was a magnitude 7.1 earthquake 0 km north of here on 28 July 2026.
Why the 10 km depth matters
At 10 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 can produce strong, widely felt shaking. Its shallow focus makes stronger surface shaking more likely than for a deeper 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 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
14 further earthquakes have been recorded within about 150 km of the epicentre in the 4 days since this event, the largest of them magnitude 5.6.
54 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 7.1 event near Uki on 28 July 2026. This M7.1 event released a comparable amount of energy to 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
- M7.1 earthquake near Uki, Japan — (0 km N)
- M4.4 earthquake near Uki, Japan — (6 km ESE)
- M4.9 earthquake near Matsubase, Japan — (9 km NW)
- M4.7 earthquake near Mifune, Japan — (9 km ENE)
- M6.8 earthquake near Uto, Japan — (9 km NNE)
- M5.0 earthquake near Uto, Japan — (11 km NNW)
- M4.4 earthquake near Honmachi, Japan — (19 km S)
- M4.8 earthquake near Honmachi, Japan — (20 km WSW)
- M4.8 earthquake near Honmachi, Japan — (21 km SW)
- M4.6 earthquake near Honmachi, Japan — (22 km WSW)
Other magnitude 7 earthquakes worldwide
- M7.1 earthquake near Uki, Japan —
- M6.8 earthquake near Uto, Japan —
- M7.3 earthquake near Puerto Madero, Mexico —
- M6.9 earthquake near Kuji, Japan —
- M7.2 earthquake near San Felipe, Venezuela —
- M6.9 earthquake near Calama, Chile —
- M7.2 earthquake near Luganville, Vanuatu —
- M7.3 earthquake near Luganville, Vanuatu —
Questions about this earthquake
How strong is a magnitude 7.1 earthquake?
Major earthquakes cause serious damage across wide regions and are capable of destroying buildings that were not designed for seismic loading. Events at this size frequently trigger long aftershock sequences lasting months. A magnitude 7.1 earthquake radiates roughly 673,610 tons of TNT equivalent in seismic energy.
How deep was the earthquake near Uki?
At 10 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.
Was the M7.1 earthquake near Uki 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 can produce strong, widely felt shaking. Its shallow focus makes stronger surface shaking more likely than for a deeper 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 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?
14 further earthquakes have been recorded within about 150 km of the epicentre in the 4 days since this event, the largest of them magnitude 5.6.
How often do earthquakes happen near Uki?
54 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 7.1 event near Uki on 28 July 2026. This M7.1 event released a comparable amount of energy to that event.