What's Happening?
The United States Geological Survey (USGS) Hawaiian Volcano Observatory has issued its monthly update on Mauna Loa, the largest active volcano on Earth, located on Hawai'i Island. The update, released on March 5, 2026, indicates that the Volcano Alert
Level for Mauna Loa remains at NORMAL. Seismic activity beneath the volcano's summit region continues to be similar to the previous month, with 116 earthquakes detected in February, slightly down from 123 in January. These seismic events are primarily clustered under Moku‘āweoweo, the summit caldera, and the south caldera region. The observatory also reports variable rates of inflation at the summit, as measured by Global Positioning System (GPS) instruments, suggesting ongoing refilling of the summit reservoir system following the 2022 eruption. Gas and temperature data from the Southwest Rift Zone remain at background levels, showing little change from previous months.
Why It's Important?
The ongoing monitoring of Mauna Loa is crucial due to its status as the largest active volcano on Earth, with a history of 34 eruptions since 1843. The volcano's activity can have significant implications for the residents of Hawai'i Island and the broader region. Maintaining the alert level at NORMAL suggests that while seismic activity is ongoing, there is no immediate threat of an eruption. This stability is important for local communities, tourism, and the economy, as any change in the volcano's status could lead to evacuations and disruptions. The continuous monitoring and updates from the USGS provide essential information for emergency preparedness and risk management, ensuring that residents and authorities can respond promptly to any changes in volcanic activity.
What's Next?
The USGS will continue to monitor Mauna Loa closely, providing regular updates on its activity. Should there be any significant changes in seismic activity, gas emissions, or ground deformation, the observatory may adjust the Volcano Alert Level accordingly. Local authorities and residents are advised to stay informed through official channels and be prepared for any potential changes in the volcano's status. The ongoing research and data collection will contribute to a better understanding of Mauna Loa's behavior, aiding in the development of more effective response strategies for future volcanic events.
