Tonga earthquakes

M5.3 earthquake 107 km NE of Hihifo, Tonga

A magnitude 5.3 earthquake struck 107 km NE of Hihifo, Tonga on Thu, Mar 30, 2023, 7:26 AM GMT+13 (18:26 UTC), 14 km (8 mi) below the surface.

A larger quake followed: M5.5 124 km ENE of Hihifo, Tonga. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
5.3 (Mww, W-phase moment), moderate
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-03-29 18:26:50 UTC
Depth
13.5 km (8.4 mi), shallow
Epicenter
15.242° S, 173.112° W
Region
Tonga
Felt reports
2
Strongest shaking
III, weak shaking
PAGER alert
Green
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
III, weak shaking
Peak ground acceleration
0.7% of gravity
Peak ground velocity
0.6 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

2 people reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

Estimated impact

The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.

Alert level
Green: little or no damage or loss of life expected
Deaths: estimated chance of each range
RangeChance
Under 165%
1 to 1030%
10 to 1004%
100 to 1,000Under 1%
1,000 to 10,000Under 1%
10,000 to 100,000Under 1%
100,000 to 10,000,000Under 1%
Economic losses: estimated chance of each range
Range, million USDChance
Under 165%
1 to 1030%
10 to 1004%
100 to 1,000Under 1%
1,000 to 10,000Under 1%
10,000 to 100,000Under 1%
100,000 to 10,000,000Under 1%

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 6.0 km horizontally, 3.7 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
67°
Stations used
143

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.3 and up: 13 in the 60 days after this one and 8 in the 30 days before it.

After

Before

Earthquakes todayTonga earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000k0pe. Read Fri, Oct 2, 2026, 8:14 AM UTC.