September 30, 2025 — Tephra clast erupted during episode 33 of Kīlauea summit eruption
Detailed Description
During the lava fountains of episode 33 on September 19, tephra particles traveled through the air and fell downwind west of Halema‘uma‘u. This clast was about 16 inches (40 centimeters) long, very lightweight due to being very bubble-rich, and delicate. USGS photo by N. Deligne.
Sources/Usage
Public Domain.