M4.9 Depth: 57.5 km

M4.9 Earthquake near Haʻapai (Tonga)

UTC time: 2026-07-20 21:11:30 UTC Local time: —

About this earthquake

On July 20, 2026 at 21:11 UTC, a magnitude M4.9 earthquake occurred near Haʻapai (Tonga). With a focal depth of about 57 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Tremors of this size are distinctly felt and can occasionally cause light damage.

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

Details

Magnitude

M4.9

Depth

57.5 km

UTC time

2026-07-20 21:11:30 UTC

Local time

—

Country

Tonga

State

Haʻapai

City

Haʻapai

Source

usgs

Coordinates

-19.66250, -174.92570

Temperature

22.9°C

Map

Depth profile

Shallow

57.5 km

57.5 km — shallower than the regional average (79.4 km)

Regional average: 79.4 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 29 km away

Volcanoes nearby

Kao

Distance: 9 km ·Stratovolcano ·Elevation: 1'009 m ·Last eruption: 1847 ·Tonga
Tofua

Distance: 18 km ·Caldera ·Elevation: 515 m ·Last eruption: 2026 ·Tonga
Lateiki

Distance: 54 km ·Stratovolcano ·Elevation: 43 m ·Last eruption: 2019 ·Tonga
Home Reef

Distance: 76 km ·Stratovolcano ·Elevation: -10 m ·Last eruption: 2026 ·Tonga
Fonuafo'ou

Distance: 90 km ·Stratovolcano ·Elevation: -17 m ·Last eruption: 1936 ·Tonga
Late

Distance: 100 km ·Stratovolcano ·Elevation: 540 m ·Last eruption: 1854 ·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)

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