April 15, 2025 — UAS mission at Kīlauea summit

During UAS (uncrewed aircraft systems) overflights on April 15, USGS-Hawaiian Volcano Observatory (HVO) staff monitor the UAS, which is visible just to the right of center in this image. HVO staff collected aerial imagery and volcanic gas concentration data during the UAS flights, which aids in volcanic hazard assessment of the ongoing Kīlauea summit eruption. The eruption is currently in a pause, though there have been 17 eruptive episodes since December 23, 2024. HVO UAS flights are conducted with the permission of Hawaiʻi Volcanoes National Park, owing to HVO's mission to monitor active volcanoes in Hawaii, assess their hazards, issue warnings, and advance scientific understanding to reduce the impacts of eruptions. Unauthorized launching, landing, or operating of a UAS from or on lands and waters administered by the National Park Service is prohibited under 36 CFR Closures & Public Use. USGS photo by K. Mulliken.