Sep 30, 2025: Large Pistoning at Kilauea Volcano, Hawaii

Video Description

USGS REPORT Sep 29: Episode 33 lava fountaining ended on September 19. Glow from both north and south vents was observed overnight, with nine overflows from the north vent. The summit is reinflating, and models indicate that episode 34 is most likely to start today or tomorrow (September 29 or 30) with small chance of October 1. No significant activity has been noted along Kīlauea’s East Rift Zone or Southwest Rift Zone. Summit Observations: Episode 33 lava fountaining ended at 12:08 p.m. HST on Friday, September 19. The UWD tiltmeter shows that the summit has been reinflating since the end of the fountaining episode, with 16 microradians of inflationary tilt. Overnight, HVO webcams showed persistent glow from north vent punctuated by 9 gas piston cycles of overflow and drainback at 9:47 p.m., 2:15 a.m., 4:16 a.m., 5:12 a.m., 6:18 a.m., 6:32 a.m., 7:00 a.m., 7:40 a.m., and 8:14 a.m., each lasting 5-10 minutes. There was intermittent strong glow from south vent. This morning, the caldera is quiet with a passive outgassing plume rising from the vents. Elevated degassing continues from the vent. Average sulfur dioxide (SO2) emission rates during pauses are typically 1,200 to 1,500 t/d, though emission rates can vary on short time scales. Wind at Sand Hill, just south of Halemaʻumaʻu are blowing from the northeast direction, which suggests that volcanic gas emissions and volcanic material may be distributed southwest across the Ka'u desert within Hawaiʻi Volcanoes National Park. Strands of volcanic glass known as Pele’s hair are present throughout the summit area of Hawaiʻi Volcanoes National Park and surrounding communities and can be remobilized by wind even after lava fountaining has ceased. ---- Other AfarTV livestreams of Kilauea: For our comprehensive multi-cam livestream of Kilauea or for a fullscreen of Cam J, visit the AfarTV channel LIVE page: https://www.youtube.com/@afartv/streams ---- Sources A special thanks to all the hardworking scientists, government officials, companies and private citizens for the work that they do which makes this live stream possible: Apau Hawaii Tours (   / @apauhawaiitours  ) - Cam Q Windy.com - so2 and wind data and maps Google Earth - maps USGS - cameras, earthquake data, and activity reports Smithsonian Institute - Volcanic activity RaspberryShake.com - earthquake activity VolcanoDiscovery.com - Research ---- You can help monitor earthquakes! Dive into the fascinating world of seismology and join a global network of hobbyists using Raspberry Shake’s powerful earthquake sensors. Get 10% off your own monitor by visiting this link: https://shop.raspberryshake.org/?ref=... ---- Join the Community 🌐 Chat Live: Engage with fellow volcano enthusiasts and share your thoughts in our live chat. 📸 Screenshots: Capture and share your favorite moments from the stream. 🔔 Subscribe: Don’t miss out on any action – subscribe and hit the bell icon for notifications. ☕ Become a Member: Support our channel and get access to perks!:    / @afartv   ---- Support the Stream 👍 Like: If you enjoy the stream, please give it a thumbs up. 💬 Comment: Let us know what you think or ask any questions you have about Fuego Volcano. 🔗 Share: Spread the excitement by sharing this live stream with friends and family. ☕ Join this channel to get access to perks:    / @afartv   Sound is not live and is recorded from a previous eruption. Main Source: USGS