Halemaʻumaʻu eruption · episode 25 of 55
Kīlauea episode 25
Episode 25 of Kīlauea's Halemaʻumaʻu eruption began at 11:57 a.m. HST on June 11, 2025 and ended at 8:08 p.m. HST the same day. USGS gives the duration as 8 hours. HVO's Uēkahuna tiltmeter (UWD) recorded about 14 microradians of deflation during the episode. HVO notes: North and south vents active, north vent dominant.
Episode 25 at a glance
- Start (HST)
- June 11, 2025, 11:57 a.m.USGS timeline
- End (HST)
- June 11, 2025, 8:08 p.m.USGS timeline
- Duration
- 8 hoursUSGS timeline
- UWD tilt (deflation)
- about 14 microradiansHVO notice
- Max fountain height
- about 350 mUSGS timeline
- Lava erupted
- about 5.3 million m³USGS timeline
- Pause that followed
- 8 daysUSGS timeline
In HVO's words
The sentences these figures come from, quoted from USGS Hawaiian Volcano Observatory notices.
“Episode 25 was accompanied by about 14 microradians of deflationary tilt at a tiltmeter near Uēkahuna (UWD), a couple of microradians more deflation than the amount seen during episode 24.”
HVO notices about episode 25
- Volcano Activity Notice · Jun 10, 2025, 7:56 a.m. HST
- Volcano Activity Notice · Jun 11, 2025, 12:39 p.m. HST
- Volcano Activity Notice · Jun 11, 2025, 8:27 p.m. HST
- Daily Update · Jun 12, 2025, 9:01 a.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.