Mount Rainier monitored closely as scientists keep watch for signs of volcanic activity

Mount Rainier is being monitored closely by scientists at the USGS for any signs of volcanic activity, with geophysicist Alex Iezzi noting that the volcano is currently at a state of background activity. The USGS employs advanced sensors to detect underground movement, gas emissions, and ground deformation, providing early warnings for potential eruptions. While an eruption could potentially send volcanic ash to Seattle, the risk of lava flows impacting the city is low. However, nearby cities such as Puyallup and Orting face serious hazards from lahars—devastating mudflows caused by melting glaciers during an eruption. In fact, the USGS ranks Mount Rainier as one of the most hazardous volcanoes in the United States due to its history of large eruptions and its proximity to populated areas.

Preparedness drills for lahars are regularly conducted in local communities, with 45,000 participants in the latest drill. Additionally, lahars can occur without a volcanic eruption due to landslides, prompting the installation of extra monitoring sensors. The ongoing vigilance of the USGS aims to ensure public safety in the event of volcanic activity.