The United States Geological Survey reported that a magnitude 6.2 earthquake struck south of an island off Hawaii on Sunday, although there was no tsunami warning issued and no immediate indications of damage.
The initial earthquake, measuring 6.1 in magnitude, jolted the island at noon, striking around 17 miles south of the Big Island's southern point, according to the USGSurvey.
A second earthquake with a magnitude of 6.2 struck the same area around 20 minutes later. The USGS classifies an earthquake with a magnitude of 6.3 as "strong."
The USGS noted in an updated report that the earthquake occurred at a depth of 22 miles (35 kilometers) and was centered south of Naalehu.
The USGS "Did You Feel It?" service received nearly 1,300 felt reports within an hour of the tembor. Reports of felt sensations came in from as far away as Kauai.
The USGS initially estimated the magnitude of the earthquake to be 6, but later upgraded it to 6.2. Quakes of that magnitude have the potential to cause significant damage.
The USGS received reports from over 2,000 residents after the tremor. The National Weather Service in Honolulu said there is no fear of a tsunami as a result of the quakes.
Within 62 miles of the quake, there have been 15 other earthquakes with a magnitude of 6 or greater over the last century.
There have been no reports of injuries, but the quakes were strong enough to knock products off shelves. At an Oahu petrol station, the shaking flung open the refrigerator display doors, and contents fell to the ground.
No damage was reported to the runways at Ellison Onizuka Kona International Airport, Waimea-Kohala Airport, Upolu Airport, or Hilo International Airport, the state Department of Transportation said. All flights arrived and departed on time.
The shocks came after Hawaii's Kilauea volcano, one of the most active on the planet, erupted again last month, erupting with lava fountains and billowing smoke from its summit crater.
According to USGS experts, the eruption at the Halemaumau crater looked to be limited within Hawaii Volcanoes National Park and posed little threat to nearby residences.
Ken Hon, chief scientist of the Hawaiian Volcano Observatory, said the earthquake is unrelated to the Kilauea volcano eruption.