Overview
- Continuous fountaining began at 8:45 a.m. HST on December 6 and lasted about 12.1 hours before ending abruptly at 8:52 p.m.
- USGS reported a simultaneous triple-vent event with fountains reaching hundreds of meters, a phenomenon not previously seen in this eruption sequence.
- Satellite and VAAC analyses confirmed SO2 and minor ash plumes with tops roughly between 4.6 and 10.7 km above sea level.
- Effusion was estimated at about 12 million m³ of lava with average discharge near 190 m³/s and peaks up to ~1,000 m³/s, covering roughly 50–60% of Halemaʻumaʻu’s floor.
- The V3 summit camera was buried by tephra between 9:55 and 9:57 a.m. and destroyed, all activity stayed within Halemaʻumaʻu, and officials warned of vog, tephra and Pele’s hair even as airports were not expected to be affected.