This is a concern. The Hawaiian Islands represent a different kind of volcanism. They do not occur near plate boundaries. They are formed near a hot-spot in the mantle of the Earth. Through these so-called plumes, magma rises to the surface.
Shield volcanoes have gradual slopes and are produced by lava flows building up upon each other.
The Hawaiian islands are the largest volcanoes on the Earth having bases with diameters of 100 km and heights of 9 km. In 1 or 2 million years that plate moves a distance equal to the average separation between the islands. Thus the island chain represents a time sequence with the Big Island being the youngest. This process is still continuing. There is another Hawaiian island forming, Lohi , about 20 km south of the Big Island.