M 4.2 earthquake – Tonga
·
Local time: May 19, 2023 · 10:12 (UTC+12)
LightIntermediate · 177 km
Reviewed by a seismologist
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- Magnitude
- 4.2body-wave magnitude (mb)
- Depth
- 177 kmIntermediate earthquake
- Epicenter
- -15.458, -174.626294 km from Mata-Utu
- Energy released
- 30 tons of TNTless than one Hiroshima bomb
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- —not estimated
- Aftershocks
- 6M2.5+ within 30 km, up to 60 days
- Significance
- 271USGS score, 0–1,000+
Not rare around here
An earthquake at least as strong struck within 300 km on May 18, 2023.
How strong was it?
Light earthquake. It released 30 tons of TNT, 16 times less than a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
6 earthquakes of M2.5+ within 30 km in the 60 days after.
The strongest earthquakes within 300 km
Since 1900, around Wallis and Futuna.
- 8.1 2009 Samoa Earthquake Sep 29, 2009
- 8.0 The 1917 Samoa-Tonga Earthquake Jun 26, 1917
- 7.8 146 km ESE of Hihifo, Tonga Dec 26, 1975
- 7.7 133 km NE of Hihifo, Tonga Sep 1, 1981
- 7.6 82 km WNW of Hihifo, Tonga May 10, 2023
- 7.4 88 km NNE of Hihifo, Tonga Apr 7, 1995
- 7.2 117 km SSW of Hihifo, Tonga Jan 8, 2000
- 7.2 19 km ENE of Hihifo, Tonga Oct 15, 1984
In the week before
Earthquakes within 30 km in the 7 days before this one: possible foreshocks.