HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT U.S. Geological Survey Tuesday, April 22, 2025, 2:20 PM
HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Tuesday, April 22, 2025, 2:20 PM
KILAUEA (VNUM #332010)
19°25’16” N 155°17’13” W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Activity Summary:
Episode 18 of the ongoing Halemaʻumaʻu eruption ended abruptly at 1:28 p.m. HST on April 22.
The north and south vents stopped erupting at approximately the same time. The fountaining phase of episode 18 began at 3:20 a.m. this morning and lasted for 10 hours and 8 minutes. Lava erupted from both vents with maximum fountains from the south vent reaching over 600 feet (200 meters) high while those from the north vent remained below 200 feet (60 meters high). Approximately 5 million cubic meters were erupted at about 140 cubic meters per second. Lava flows from both vents covered over 60% of the floor of Halemaʻumaʻu within the southern part of Kaluapele (Kīlauea caldera). Additional information on the resumption of episode 18 can be found in the April 20 Kīlauea update; the April 21 Kīlauea update; the April 22 Status Report; and the April 22 Kīlauea update.
Deflationary tilt at the summit recorded 13 microradians during this episode. The end of the eruption was coincident with a rapid change from deflation to inflation at the summit and a rapid drop in seismic tremor intensity.
Each episode of Halemaʻumaʻu lava fountaining since December 23, 2024, has continued for 13 hours to 8 days and episodes have been separated by pauses in eruptive activity lasting less than 24 hours to 12 days.
- Timeline of eruptive episodes since December 23, 2024: https://www.usgs.gov/volcanoes/kilauea/science/eruption-information
- The Kīlauea summit livestream video is available here: https://www.youtube.com/usgs/live
No changes have been detected in the East Rift Zone or Southwest Rift Zone. HVO continues to closely monitor Kīlauea and will issue an eruption update tomorrow morning unless there are significant changes before then.
Kīlauea Volcano Alert Level/Aviation Color Code remain at WATCH/ORANGE. All current and recent activity is within Hawaiʻi Volcanoes National Park.
