Back to map
M5.4 Depth: 30.0 km

M5.4 Earthquake near Koulo, Haʻapai (Tonga)

UTC time: 2026-09-01 10:34:33 UTC Local time: —
M5.4 earthquake near Koulo on Sep 1, 2026 — map of epicenter and shaking intensity | QuakeMap24
M5.4 Earthquake near Koulo, Haʻapai (Tonga) · 2026-09-01 10:34:33 UTC

About this earthquake

A magnitude M5.4 earthquake was recorded near Koulo, Haʻapai (Tonga) on September 1, 2026 at 10:34 UTC. The hypocenter lay relatively close to the surface at around 30 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

The data is provided by EMSC and cross-checked across seismological networks.

Details

Magnitude
M5.4
Depth
30.0 km
UTC time
2026-09-01 10:34:33 UTC
Local time
—
Country
Tonga
State
Haʻapai
City
Koulo
County
Vahe Lifuka
Village
Koulo
Source
emsc
Coordinates
-19.76050, -174.34300
Temperature
22.2°C

Map

Depth profile

Depth profile Depth: 30 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 30 km
Shallow
30 km
30 km — shallower than the regional average (99.3 km)
Regional average: 99.3 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Tectonic context

Located on the Tonga Plate.
Near the boundary Tonga ↔ Niuafoʻou · about 91 km away

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Nuku'alofa177.2 kmSW22'400

GeoNames · CC BY 4.0

Volcanoes nearby

  • Kao
    Distance: 71 km ·Stratovolcano ·Elevation: 1'009 m ·Last eruption: 1847 ·Tonga
  • Tofua
    Distance: 76 km ·Caldera ·Elevation: 515 m ·Last eruption: 2026 ·Tonga
  • Lateiki
    Distance: 85 km ·Stratovolcano ·Elevation: 43 m ·Last eruption: 2019 ·Tonga
  • Home Reef
    Distance: 97 km ·Stratovolcano ·Elevation: -10 m ·Last eruption: 2026 ·Tonga
  • Late
    Distance: 111 km ·Stratovolcano ·Elevation: 540 m ·Last eruption: 1854 ·Tonga
  • Fonuafo'ou
    Distance: 129 km ·Stratovolcano ·Elevation: -17 m ·Last eruption: 1936 ·Tonga

Subsequent earthquakes nearby

Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.

First 6 hours1
First 24 hours1
First 72 hours1
Strongest subsequent eventM5.5
M5.52026-09-01 10:34:42 UTC56.8 kmTonga Islands

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#13
Earlier events M≥480
Earlier events M≥529
Compared since2025-01-02

The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.

Strongest earlier events

M7.02025-03-30 12:18:50 UTC66.9 km61 km SSE of Pangai, Tonga M7.02025-03-30 12:18:49 UTC77.9 km73 km SE of Pangai, Tonga M7.02025-03-30 12:18:49 UTC75.7 kmHaʻapai M6.22025-03-30 15:04:54 UTC77.3 km72 km SSE of Pangai, Tonga M5.92025-03-30 15:33:49 UTC58.4 km53 km SSE of Pangai, Tonga

Historic earthquake map · Tonga

Open history map
Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · Tonga

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

Stats (last 24h)

Global (24h)
618
Country (24h)
Tonga
0
Current earthquakes in
Magnitude Place Local time
No recent events available.

Share