A strong earthquake registered by the USGS as M6.8 hit the Maug Islands region, Northern Mariana Islands at 11:03 UTC on April 5, 2024. The agency is reporting a depth of 220 km (137 miles).
A strong and shallow earthquake registred by the USGS as M6.2 hit Northern Mariana Islands at 09:54 UTC on April 2, 2024. The agency is reporting a depth of 10 km (6.2 miles).
A strong earthquake registered by the USGS as M6.1 hit the Pagan region, Northern Mariana Islands at 15:48 UTC on January 20, 2024. The agency is reporting a depth of 195 km (121 miles). EMSC is reporting the same magnitude and depth.
A very strong earthquake registered by the USGS as M7.1 hit the Mariana Islands region at 09:05 UTC on November 24, 2023. The agency is reporting a depth of 12.4 km (7.7 miles). EMSC is reporting M7.1 at a depth of 10 km (6.2 miles).
An eruption at submarine Ruby volcano, near the southern end of the Mariana arc, was detected on Thursday, September 14, 2023. This was based on seismoacoustic signals from a monitoring station in Saipan and satellite imagery that captured a submarine plume. The last known eruption at this volcano took place in 1995.
Increased underwater volcanic activity was detected at the Ahyi Seamount, Northern Mariana Islands on May 21, 2023, leading to the Aviation Color Code and Volcano Alert Level being raised to Yellow/Advisory.
Satellite and remote geophysical data show signs of unrest at Ahyi Seamount, Northern Mariana Islands, prompting the USGS to raise the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory on November 28, 2022.
After reports of increased seismicity and light emissions at Pagan volcano, Mariana Islands1 at the end of July 2021, low-level volcanic gas and ash emissions were observed on September 1, prompting NMI/USGS to raise the Aviation Color Code to Orange and the Volcano…
Local residents are reporting increased seismicity and light emissions from Pagan volcano, Northern Mariana Islands, prompting NMI/USGS to raise the Aviation Color Code to Yellow. The last eruption of this volcano took place in 2012 (VEI 2). Ground-based…
A deep earthquake registered by the USGS as M6.2 hit the Pagan region, Northern Mariana Islands at 21:08 UTC on June 13, 2020 (07:08 LT, June 14). The agency is reporting a depth of 614 km (381 miles). EMSC is reporting M6.1 at a depth of 590 km (366 miles). This…
