Halemaʻumaʻu eruption · episode 29 of 55
Kīlauea episode 29
Episode 29 of Kīlauea's Halemaʻumaʻu eruption began at 5:15 a.m. HST on July 20, 2025 and ended at 6:35 p.m. HST the same day. USGS gives the duration as 13 hours. HVO notes: North and south vents active, north vent dominant.
Episode 29 at a glance
- Start (HST)
- July 20, 2025, 5:15 a.m.USGS timeline
- End (HST)
- July 20, 2025, 6:35 p.m.USGS timeline
- Duration
- 13 hoursUSGS timeline
- UWD tilt (deflation)
- Not stated by HVO
- Max fountain height
- about 63 mUSGS timeline
- Lava erupted
- about 6.7 million m³USGS timeline
- Pause that followed
- 16 daysUSGS timeline
HVO notices about episode 29
- Status Report · Jul 20, 2025, 4:56 a.m. HST
- Volcano Activity Notice · Jul 20, 2025, 5:29 a.m. HST
- Volcano Activity Notice · Jul 20, 2025, 6:59 p.m. HST
Daily updates: USGS Kīlauea volcano updates. Full table: USGS Timeline of Eruptive Episodes.
Times are Hawaiʻi-Aleutian Standard Time (HST). Start and pause times, durations, fountain heights and lava volumes come from the USGS Hawaiian Volcano Observatory's Timeline of Eruptive Episodes; tilt figures and episodes not yet in that table are quoted from HVO notices. USGS describes these as unreviewed, preliminary estimates that are subject to revision. Durations for episodes 17 and earlier may include precursory activity, and HVO rounds durations to the nearest hour, half-hour or day. A blank cell means HVO hasn't published that figure in a form we could read; we don't estimate it.
Credit: U.S. Geological Survey. This archive is generated automatically and is not an official USGS product.