Earthquakes detected by HVO’s seismic network in December 2021

Earthquakes detected by HVO’s seismic network in December 2021, with the size of the circles corresponding the earthquake magnitude and the color corresponding to the earthquake depth. The cluster of mostly blue earthquakes are from a persistent swarm about 30 km (19 miles) underneath Pāhala. Kamaʻehuakanaloa’s earthquake swarm was mostly 5–13 km (3–8 miles; yellow) below sea level, with a few shallower events.