What Are the Hazards of Mauna Loa
Mauna Loa is one of the world's most active volcanoes, and its hazards include lava flows, volcanic gases, and explosive eruptions. Because the volcano towers over Hawaii Island, these hazards can affect communities, infrastructure, and transportation routes across a wide area.
How Mauna Loa Eruptions Affect Communities
During past eruptions, fast-moving lava flows have threatened roads, neighborhoods, and utilities on the island. Volcanic gases, especially sulfur dioxide, can degrade air quality downwind. Scientists from the U.S. Geological Survey track seismic activity and ground deformation to provide early warnings.
Monitoring and Preparedness for Mauna Loa
The Hawaiian Volcano Observatory uses seismic networks, satellite data, and field measurements to monitor Mauna Loa hazards. Authorities issue volcano alert levels and evacuation guidance based on observed changes. Residents and visitors can reduce risk by following official updates, preparing emergency kits, and planning evacuation routes in advance.
Learn more about Mauna Loa monitoring and preparedness from the USGS Volcano Hazards Program at https://www.usgs.gov/volcanoes/mauna-loa.
