More than two years after road access and electrical power to the Mauna Loa Observatory was cut off by lava flows, NOAA staff continue to make critical measurements of the atmosphere and other environmental variables at the remote site.

In 2023, observatory staff installed solar panels at the site and resumed some measurements, including the independent carbon dioxide monitoring programs run by the Global Monitoring Laboratory and Scripps Institution of Oceanography, as well as other atmospheric measurements.

Construction of a temporary road to access the observatory site is anticipated to begin in summer 2025.

Media can contact: Theo Stein (303) 819-7409 (theo.stein@noaa.gov)

The lava from the Mauna Loa eruption in November, 2022 is still cooling and NOAA is working with State and Federal partners to restore road and power to the site as soon as possible.

Below are two short movies showing the lava flow crossing the road to the Observatory (videos taken by MLO staff).