The Marianas experienced over three earthquakes throughout the month of July, but there were no threats of tsunamis.
The CNMI Homeland Security reported multiple earthquakes throughout July due to the constant volcanic activity within the Pacific Ring of Fire, that region that surrounds the Pacific Ocean and is characterized by much volcanic activity.
Last July 17, an earthquake with a preliminary magnitude of 5.7 occurred about 67 miles south of Guam at 8:04am and no tsunami threats were reported for Guam, Rota, Tinian, or Saipan.
Last July 14 at 8:10am, a 4.7-magnitude earthquake occurred 75 miles south of Merizo, Guam and no tsunami warnings or advisories were issued by the Pacific Tsunami Warning Center.
At 6:37am last July 12, a 4.3-magnitude earthquake occurred 16 kilometers west of Anatahan, Northern Marianas Islands. There were no reports of injuries or damage to infrastructure and no tsunami warnings or advisories were issued.
At 11:58pm last July 8, a 4.5-magnitude earthquake occurred 96 kilometers north northeast of Anatahan, Northern Mariana Islands. There were no reports of injuries or damages to infrastructure and no Tsunami warnings or advisories were issued.
The islands within the Marianas archipelago are prone to regular earthquakes because it is part of the Pacific Ring of Fire. Tremors happen almost daily in the Marianas region but they are usually not strong enough to be felt by people.
The Pacific Ring of Fire, or the Circum-Pacific Belt, is a U-shaped area in the Pacific Ocean basin that is made up of about 452 dormant and active volcanoes. The Pacific Ring of Fire is known for the continuous earthquakes influenced by the numerous active volcanoes in the region.