Halemaʻumaʻu eruption · episode 52 of 55
Kīlauea episode 52
Episode 52 of Kīlauea's Halemaʻumaʻu eruption began at 7:10 p.m. HST on July 28, 2026 and ended at 2:36 a.m. HST on July 29, 2026. USGS gives the duration as 7 hours. HVO's Uēkahuna tiltmeter (UWD) recorded about 14.4 microradians of deflation during the episode. HVO notes: Precursory lava flows from the north vent; north vent erupted lava fountain.
Episode 52 at a glance
- Start (HST)
- July 28, 2026, 7:10 p.m.USGS timeline
- End (HST)
- July 29, 2026, 2:36 a.m.USGS timeline
- Duration
- 7 hoursUSGS timeline
- UWD tilt (deflation)
- about 14.4 microradiansHVO notice
- Max fountain height
- about 150 mUSGS timeline
- Lava erupted
- about 4.7 million m³USGS timeline
- Pause that followed
- 14 daysUSGS timeline
In HVO's words
The sentences these figures come from, quoted from USGS Hawaiian Volcano Observatory notices.
“The Uēkahuna tiltmeter (UWD) recorded about 14.4 microradians of deflationary tilt during episode 52.”
HVO notices about episode 52
- Volcano Activity Notice · Jul 28, 2026, 10:48 a.m. HSTPrecursory low-level eruptive activity before episode 52 of the ongoing Halemaʻumaʻu eruption began around 10:22 a.m. HST on July 28, 2026.
- Volcano Activity Notice · Jul 28, 2026, 7:31 p.m. HSTEpisode 52 of the ongoing Halemaʻumaʻu eruption began at 7:10 p.m. HST on July 28, 2026.
- Volcano Activity Notice · Jul 28, 2026, 9:36 p.m. HSTEpisode 52 of the ongoing Halemaʻumaʻu eruption continues at 9:15 p.m. HST on July 28, 2026.
- Volcano Activity Notice · Jul 29, 2026, 3:01 a.m. HSTEpisode 52 of the ongoing Halemaʻumaʻu eruption ended abruptly at 2:36 a.m. HST on July 29, 2026.
- Status Report · Jul 29, 2026, 3:19 a.m. HSTSummary: Episode 52 of the ongoing Halemaʻumaʻu eruption began at 7:10 p.m. HST July 28 and ended at 2:36 a.m. HST on July 29, 2026.
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.