The first large shock occurred on July 14 at 06:11 UTC with a magnitude of Mw 8.0.

The second large event occurred on July 26 at 01:23 UTC with a magnitude of Mw  8.1.

The initial event on July 14 caused a tsunami, which was observed in Rabaul.

[3] The earthquake of July 26 triggered a tsunami with a 3.4 m (11 ft) runup in New Britain.

[4] Shallow, large thrust earthquakes in the Solomon Islands tend to occur in multiplets.