Experts from the US Geological Survey said the 3.7 magnitude Hawaii quake struck 36 miles off the coast of Honokaa.
There were no immediate reports of casualties or damage.
The earlier quake triggered a tsunami warning for parts of Alaska and Canada and a tsunami watch for the entire US west coast.
The NWS Pacific Tsunami Warning Center said that, based on the preliminary earthquake parameters, “widespread hazardous tsunami waves were possible”.
Reports on social media suggest the tremors were felt as far south as Seatle and Vancouver.
Anchorage, Alaska’s largest city, has issued an extreme warning, saying there is “extraordinary threat to life or property”.
In a warning for Alaska and British Columbia, Anchorage Office of Emergency Management said: “If you are located in this coastal area, move inland to higher ground. Tsunami warnings mean that a tsunami with significant inundation is possible or is already occurring.”
The Ring of Fire is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur.
In a 25,000-mile horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and plate movements.
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