In Hawaii a total of 18 earthquakes have been measured under Kilauea volcano during the last 18 hours.
The largest earthquakes measured on the Big Island was a magnitude 2.2 earthquake measured on Wednesday, 6km southwest of the volcano.
Kilauea is showing increased signs of activity, as the summit lava lake remains at a high level and continues to rise.
Hawaiian Volcano Observatory spokeswoman Janet Babb said: “Overall, it’s been on the high side. With this latest inflation, it’s just pushing up even higher.”