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Pacifica Statistica180°The Pacific, one statistic at a time.

Reading no. 2026/263

SeismicityDerived data

Seismic energy released per day in the South-West Pacific, 30 days

167.9TJ

South-West Pacific

Seismic energy accumulated over 30 days, from 21 August to 19 September 2026, computed from the magnitudes of earthquakes of magnitude 4 or above.

21 Augmin. 0.0, max. 28.419 Sep

September 5 accounts for 16.9 % of the energy of the period, with 5 earthquakes recorded that day.

Observation
Earthquakes counted
118
Maximum magnitude
5.6
Most energetic day
2026-09-05 (28.4 TJ)

Method

Energy of each earthquake estimated by log10(E) = 1.5 M + 4.8 (E in joules), summed per UTC day, in terajoules. Area: latitudes 50° S to 0°, longitudes 140° E to 180°. Minimum magnitude 4.

Source

Nature

Derived data

Value derived from a source or from an exact calculation, using the method described.

Confidence

Medium

See also

2026/272 · 29 Sep173earthquakesMagnitude 4+ earthquakes per day, South-West Pacific, 35 days2026/252 · 9 Sep636.6kmDepth of the deepest earthquake in the Fiji-Tonga zone2026/245 · 2 Sep119earthquakesMagnitude 4 and above earthquakes in the South-West Pacific2026/193 · 12 Jul122kmMaximum earthquake depth in New Zealand

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