Scientists from the United States Geological Survey have documented unusual tornado-like formations at Hawaii's Kilauea volcano, which they have termed "Tephra Devils."

The phenomenon involves low-density volcanic debris, known as tephra, that forms spinning vortexes resembling small tornadoes over the volcano's craters. USGS researchers observed these formations during recent eruptions at Kilauea.

The tephra devils appear to be short-lived events that occur when volcanic material becomes caught in swirling air currents above the active crater areas. The spinning formations create a striking visual effect as heated volcanic debris rotates in tornado-like patterns.

Kilauea, located on Hawaii's Big Island, is one of the world's most active volcanoes and has been the subject of extensive scientific monitoring. The volcano's recent eruptive activity has provided researchers with opportunities to observe and document various volcanic phenomena.

The observation of tephra devils adds to the scientific understanding of volcanic processes and the complex atmospheric interactions that can occur during eruptions. USGS scientists continue to monitor the volcano's activity as part of ongoing research efforts.